$HTLF
HEARTLAND FINANCIAL USA INC Stock $htlf

$htlf Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000092011220000058 Filed on February 26, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue		$124.9M	$113.4M
YoY Change		26.18%	38.2%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$8.200M	$8.300M	$7.500M
YoY Change	10.81%	2.47%	-1.32%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense		$14.22M	$12.00M
YoY Change		55.64%	60.41%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$38.80M	$42.67M	$35.33M
YoY Change	10.23%	40.55%	17.7%
Income Tax	$6.685M	$8.956M	$7.451M
% Of Pretax Income	17.23%	20.99%	21.09%
Net Earnings	$32.14M	$33.71M	$27.88M
YoY Change	135.09%	55.83%	26.97%
Net Earnings / Revenue		26.99%	24.58%
Basic Earnings Per Share	$0.93	$0.98	$0.85
Diluted Earnings Per Share	$0.93	$0.97	$0.85
COMMON SHARES
Basic Shares Outstanding	34.47M shares	34.45M shares	32.62M shares
Diluted Shares Outstanding	34.67M shares	34.64M shares	32.83M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.724B	$2.712B	$2.585B
YoY Change	12.91%
Cash & Equivalents	$273.6M	$437.4M	$388.0M
Short-Term Investments	$2.451B	$2.274B	$2.197B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$187.4M	$193.8M	$196.0M
YoY Change	8.76%	11.04%	20.66%
Goodwill	$391.7M	$391.7M	$391.7M
YoY Change	65.54%	65.53%	176.8%
Intangibles	$78.55M	$82.11M	$84.69M
YoY Change	28.65%	29.05%	47.07%
Long-Term Investments
YoY Change
Other Assets	$7.000M	$4.000M	$4.000M
YoY Change	250.0%	0.0%	300.0%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$11.41B	$11.34B	$11.30B
YoY Change	16.28%	16.19%	37.75%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$78.00M	$84.00M	$68.00M
YoY Change	23.81%	21.74%	41.67%
Deferred Revenue
YoY Change
Short-Term Debt	$227.0M	$131.1M	$229.9M
YoY Change	-30.08%	-23.7%	65.23%
Long-Term Debt Due			$25.00M
YoY Change
Total Short-Term Liabilities	$78.00M	$84.00M	$93.00M
YoY Change	23.81%	21.74%	93.75%
LONG-TERM LIABILITIES
Long-Term Debt	$272.0M	$274.0M	$245.0M
YoY Change	9.68%	3.4%	0.41%
Other Long-Term Liabilities	$106.0M	$50.00M
YoY Change
Total Long-Term Liabilities	$378.0M	$324.0M	$245.0M
YoY Change	52.42%	22.26%	0.41%
TOTAL LIABILITIES
Total Short-Term Liabilities	$78.00M	$84.00M	$93.00M
Total Long-Term Liabilities	$378.0M	$324.0M	$245.0M
Total Liabilities	$10.08B	$10.05B	$10.05B
YoY Change	14.33%	14.6%	35.78%
SHAREHOLDERS EQUITY
Retained Earnings	$579.3M	$553.7M	$524.8M
YoY Change	20.34%	18.16%	16.56%
Common Stock	$777.6M	$776.6M	$774.6M
YoY Change	45.7%	45.64%	104.26%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$0.00	$0.00	$0.00
YoY Change
Treasury Stock Shares	0.000 shares	0.000 shares	0.000 shares
Shareholders Equity	$1.325B	$1.280B	$1.256B
YoY Change
Total Liabilities & Shareholders Equity	$11.41B	$11.34B	$11.30B
YoY Change	16.28%	16.19%	37.75%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	$32.14M	$33.71M	$27.88M
YoY Change	135.09%	55.83%	26.97%
Depreciation, Depletion And Amortization	$8.200M	$8.300M	$7.500M
YoY Change	10.81%	2.47%	-1.32%
Cash From Operating Activities	$75.70M	$73.40M	$34.70M
YoY Change	191.15%	26.55%	-8.92%
INVESTING ACTIVITIES
Capital Expenditures	-$900.0K	-$2.000M	-$7.400M
YoY Change	-25.0%	66.67%	252.38%
Acquisitions
YoY Change
Other Investing Activities	-$265.4M	-$10.50M	-$24.40M
YoY Change	107.18%	-85.54%	-116.04%
Cash From Investing Activities	-$266.4M	-$12.40M	-$31.90M
YoY Change	106.03%	-83.2%	-121.27%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	27.00M	-11.60M	118.9M
YoY Change	-43.28%	-113.54%	-166.28%
NET CHANGE
Cash From Operating Activities	75.70M	73.40M	34.70M
Cash From Investing Activities	-266.4M	-12.40M	-31.90M
Cash From Financing Activities	27.00M	-11.60M	118.9M
Net Change In Cash	-163.7M	49.40M	121.7M
YoY Change	193.9%	-29.33%	1298.85%
FREE CASH FLOW
Cash From Operating Activities	$75.70M	$73.40M	$34.70M
Capital Expenditures	-$900.0K	-$2.000M	-$7.400M
Free Cash Flow	$76.60M	$75.40M	$42.10M
YoY Change	181.62%	27.36%	4.73%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0000920112
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2012Q1	htlf	Numberof Preferred Share Purchase Right Per Preferred Stock NumberofPreferredSharePurchaseRightPerPreferredStock	0.001
CY2012Q1	htlf	Dividends Preferred Stock Common Share Equivalents Per Share DividendsPreferredStockCommonShareEquivalentsPerShare	1000
CY2012Q1	htlf	Preferred Stock Liquidation Preference Per Shareof Common Stock PreferredStockLiquidationPreferencePerShareofCommonStock	1000
CY2012Q1	htlf	Stockholders Equity Common Stock Rights Distribution Date Subsequent To Qualifying Event StockholdersEquityCommonStockRightsDistributionDateSubsequentToQualifyingEvent	P10D
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	001-15393
CY2019	dei	Entity Registrant Name EntityRegistrantName	HEARTLAND FINANCIAL USA, INC.
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	42-1405748
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	1398 Central Avenue,
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Dubuque
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	IA
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	52001
CY2019	dei	City Area Code CityAreaCode	(563)
CY2019	dei	Local Phone Number LocalPhoneNumber	589-2100
CY2019	dei	Security12b Title Security12bTitle	Common Stock $1.00 par value
CY2019	dei	Trading Symbol TradingSymbol	HTLF
CY2019	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
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CY2018	us-gaap	Professional Fees ProfessionalFees	43510000	USD
CY2017	us-gaap	Professional Fees ProfessionalFees	36474000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	10028000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	9565000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	7229000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11972000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9355000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6077000	USD
CY2019	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-1035000	USD
CY2018	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-3038000	USD
CY2017	us-gaap	Gains Losses On Sales Of Other Real Estate GainsLossesOnSalesOfOtherRealEstate	-2461000	USD
CY2019	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	19422000	USD
CY2018	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-2208000	USD
CY2017	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-2475000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	3227000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	2564000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	0	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	54208000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	49673000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	38247000	USD
CY2019	us-gaap	Noninterest Expense NoninterestExpense	349161000	USD
CY2018	us-gaap	Noninterest Expense NoninterestExpense	353888000	USD
CY2017	us-gaap	Noninterest Expense NoninterestExpense	297675000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	184119000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	145213000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	119092000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34990000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28215000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43820000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	149129000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	116998000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	75272000	USD
CY2019	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2018	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	39000	USD
CY2017	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	58000	USD
CY2019	htlf	Tax Expense Benefiton Intereston Convertible Debt TaxExpenseBenefitonInterestonConvertibleDebt	0	USD
CY2018	htlf	Tax Expense Benefiton Intereston Convertible Debt TaxExpenseBenefitonInterestonConvertibleDebt	0	USD
CY2017	htlf	Tax Expense Benefiton Intereston Convertible Debt TaxExpenseBenefitonInterestonConvertibleDebt	-12000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	149129000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	116959000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75226000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.14
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.54
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.67
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.14
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.65
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.59
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.51
CY2019	us-gaap	Net Income Loss NetIncomeLoss	149129000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	116998000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	75272000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	52557000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-9568000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	23778000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	7659000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	1085000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	6764000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	11429000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-2731000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	6670000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	33469000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-7922000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	10344000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	-3639000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	816000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax	210000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-170000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-431000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification Before Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax	-1290000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	-723000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	220000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationTaxParent	765000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-2746000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	1027000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	735000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	30723000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6895000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	11079000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	179852000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	110103000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	86351000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	740916000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	86351000	USD
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.51
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	14499000	USD
CY2017	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	13066	shares
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	625000	USD
CY2017	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	3846493	shares
CY2017	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	175723000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4068000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	991457000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	991457000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	110103000	USD
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.59
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	19318000	USD
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1761	shares
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	97000	USD
CY2018	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	4525904	shares
CY2018	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	239502000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4505000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1325175000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1325175000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	179852000	USD
CY2018Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-1272000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.68
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	24607000	USD
CY2019	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	2226779	shares
CY2019	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	92919000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	6070000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	1578137000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	149129000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	116998000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	75272000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	30797000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	30791000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	30144000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16657000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	24013000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	15563000	USD
CY2019	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-20326000	USD
CY2018	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-25142000	USD
CY2017	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-26961000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-414000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2760000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	13263000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7659000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1085000	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	6973000	USD
CY2019	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	525000	USD
CY2018	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	212000	USD
CY2017	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	0	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	6070000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	4505000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	4068000	USD
CY2019	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	8394000	USD
CY2018	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-2208000	USD
CY2017	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-2475000	USD
CY2019	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	384603000	USD
CY2018	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	646019000	USD
CY2017	us-gaap	Payments For Origination And Purchases Of Loans Held For Sale PaymentsForOriginationAndPurchasesOfLoansHeldForSale	728681000	USD
CY2019	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	396290000	USD
CY2018	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	714259000	USD
CY2017	us-gaap	Proceeds From Sale Of Loans Held For Sale ProceedsFromSaleOfLoansHeldForSale	760484000	USD
CY2019	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	14661000	USD
CY2018	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	16404000	USD
CY2017	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	15102000	USD
CY2019	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-1301000	USD
CY2018	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	3368000	USD
CY2017	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	593000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	8566000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-2364000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Expense IncreaseDecreaseInPrepaidExpense	-576000	USD
CY2019	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	421000	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-2000	USD
CY2017	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	34000	USD
CY2019	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	375000	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	1280000	USD
CY2019	htlf	Paymentsto Acquire Mortgage Servicing Rights Msr Operating Activities PaymentstoAcquireMortgageServicingRightsMSROperatingActivities	1011000	USD
CY2018	htlf	Paymentsto Acquire Mortgage Servicing Rights Msr Operating Activities PaymentstoAcquireMortgageServicingRightsMSROperatingActivities	5160000	USD
CY2017	htlf	Paymentsto Acquire Mortgage Servicing Rights Msr Operating Activities PaymentstoAcquireMortgageServicingRightsMSROperatingActivities	7358000	USD
CY2019	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	911000	USD
CY2018	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	46000	USD
CY2017	htlf	Servicing Rights Impairment Recovery ServicingRightsImpairmentRecovery	-21000	USD
CY2019	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	266000	USD
CY2018	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	674000	USD
CY2017	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	1246000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	34786000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	8760000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	14148000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	161174000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	242750000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	155930000	USD
CY2019	us-gaap	Payments For Deposits With Other Institutions PaymentsForDepositsWithOtherInstitutions	258000	USD
CY2018	us-gaap	Payments For Deposits With Other Institutions PaymentsForDepositsWithOtherInstitutions	1000000	USD
CY2017	us-gaap	Payments For Deposits With Other Institutions PaymentsForDepositsWithOtherInstitutions	0	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1628467000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	727895000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1456750000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	10325000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1618000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	2790000	USD
CY2019	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	0	USD
CY2018	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	8767000	USD
CY2017	us-gaap	Proceeds From Payments For In Interest Bearing Deposits In Banks ProceedsFromPaymentsForInInterestBearingDepositsInBanks	12171000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	402946000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	237747000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	222656000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	3158000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	15953000	USD
CY2017	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	10621000	USD
CY2019	htlf	Proceeds From Maturity And Principal Paydowns In Interestbearing Depositsin Banks ProceedsFromMaturityAndPrincipalPaydownsInInterestbearingDepositsinBanks	1216000	USD
CY2018	htlf	Proceeds From Maturity And Principal Paydowns In Interestbearing Depositsin Banks ProceedsFromMaturityAndPrincipalPaydownsInInterestbearingDepositsinBanks	6993000	USD
CY2017	htlf	Proceeds From Maturity And Principal Paydowns In Interestbearing Depositsin Banks ProceedsFromMaturityAndPrincipalPaydownsInInterestbearingDepositsinBanks	34904000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2577106000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1197822000	USD
CY2017	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	1816564000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	6446000	USD
CY2018	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	3731000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1116000	USD
CY2019	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	90749000	USD
CY2018	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	132401000	USD
CY2017	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-22109000	USD
CY2019	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	28000	USD
CY2018	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2228000	USD
CY2017	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2000000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1402000	USD
CY2018	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2017	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2019	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	35017000	USD
CY2018	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	0	USD
CY2017	us-gaap	Proceeds From Sale Of Mortgage Servicing Rights Msr ProceedsFromSaleOfMortgageServicingRightsMSR	6290000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17928000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	12742000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	8113000	USD
CY2019	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	76071000	USD
CY2018	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	212197000	USD
CY2017	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	71089000	USD
CY2019	htlf	Cash Divested For Divestiture Of Businesses CashDivestedForDivestitureOfBusinesses	49264000	USD
CY2018	htlf	Cash Divested For Divestiture Of Businesses CashDivestedForDivestitureOfBusinesses	0	USD
CY2017	htlf	Cash Divested For Divestiture Of Businesses CashDivestedForDivestitureOfBusinesses	0	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	903000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2972000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	4867000	USD
CY2019	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	8304000	USD
CY2018	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	11562000	USD
CY2017	us-gaap	Proceeds From Sale Of Foreclosed Assets ProceedsFromSaleOfForeclosedAssets	10844000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-573970000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-124220000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	27298000	USD
CY2019	htlf	Netincreaseindemanddeposits Netincreaseindemanddeposits	-51178000	USD
CY2018	htlf	Netincreaseindemanddeposits Netincreaseindemanddeposits	-8052000	USD
CY2017	htlf	Netincreaseindemanddeposits Netincreaseindemanddeposits	-154394000	USD
CY2019	us-gaap	Increase Decrease In Savings Deposits IncreaseDecreaseInSavingsDeposits	680641000	USD
CY2018	us-gaap	Increase Decrease In Savings Deposits IncreaseDecreaseInSavingsDeposits	318697000	USD
CY2017	us-gaap	Increase Decrease In Savings Deposits IncreaseDecreaseInSavingsDeposits	-166733000	USD
CY2019	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-81251000	USD
CY2018	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-221980000	USD
CY2017	us-gaap	Increase Decrease In Time Deposits IncreaseDecreaseInTimeDeposits	-79733000	USD
CY2019	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	25000000	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	20000000	USD
CY2019	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	25000000	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	20000000	USD
CY2019	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	51314000	USD
CY2018	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	158519000	USD
CY2017	us-gaap	Repayments Of Other Short Term Debt RepaymentsOfOtherShortTermDebt	25847000	USD
CY2019	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	512085000	USD
CY2018	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	462940000	USD
CY2017	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	251139000	USD
CY2019	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	546725000	USD
CY2018	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	402102000	USD
CY2017	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	241505000	USD
CY2019	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	50000	USD
CY2018	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	30131000	USD
CY2017	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2019	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	20693000	USD
CY2018	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	59157000	USD
CY2017	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	9645000	USD
CY2019	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	2125000	USD
CY2018	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	0	USD
CY2017	us-gaap	Payments For Repurchase Of Warrants PaymentsForRepurchaseOfWarrants	13800000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	97000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	625000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	661000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	489000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	963000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	24607000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	19357000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	14557000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	517900000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-40903000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-145949000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	105104000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	77627000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	37279000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	273630000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	196003000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	158724000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	378734000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	273630000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	196003000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	37609000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	17085000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	15817000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	80238000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	51868000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	33316000	USD
CY2019	htlf	Loans Transferred To Oreo LoansTransferredToOreo	8066000	USD
CY2018	htlf	Loans Transferred To Oreo LoansTransferredToOreo	7866000	USD
CY2017	htlf	Loans Transferred To Oreo LoansTransferredToOreo	5293000	USD
CY2019	htlf	Transferof Assets Heldforsaleto Property Plantand Equipment Net TransferofAssetsHeldforsaletoPropertyPlantandEquipmentNet	4306000	USD
CY2018	htlf	Transferof Assets Heldforsaleto Property Plantand Equipment Net TransferofAssetsHeldforsaletoPropertyPlantandEquipmentNet	81000	USD
CY2017	htlf	Transferof Assets Heldforsaleto Property Plantand Equipment Net TransferofAssetsHeldforsaletoPropertyPlantandEquipmentNet	2372000	USD
CY2019	htlf	Purchases Of Available For Sale Securities Accrued Not Paid PurchasesOfAvailableForSaleSecuritiesAccruedNotPaid	11106000	USD
CY2018	htlf	Purchases Of Available For Sale Securities Accrued Not Paid PurchasesOfAvailableForSaleSecuritiesAccruedNotPaid	0	USD
CY2017	htlf	Purchases Of Available For Sale Securities Accrued Not Paid PurchasesOfAvailableForSaleSecuritiesAccruedNotPaid	1017000	USD
CY2019	htlf	Transfer Of Property Plant And Equipment Net To Assets Held For Sale TransferOfPropertyPlantAndEquipmentNetToAssetsHeldForSale	4655000	USD
CY2018	htlf	Transfer Of Property Plant And Equipment Net To Assets Held For Sale TransferOfPropertyPlantAndEquipmentNetToAssetsHeldForSale	7660000	USD
CY2017	htlf	Transfer Of Property Plant And Equipment Net To Assets Held For Sale TransferOfPropertyPlantAndEquipmentNetToAssetsHeldForSale	3442000	USD
CY2019	htlf	Sale Of Available For Sale Securities Noncash SaleOfAvailableForSaleSecuritiesNoncash	148030000	USD
CY2018	htlf	Sale Of Available For Sale Securities Noncash SaleOfAvailableForSaleSecuritiesNoncash	0	USD
CY2017	htlf	Sale Of Available For Sale Securities Noncash SaleOfAvailableForSaleSecuritiesNoncash	0	USD
CY2019	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	0	USD
CY2018	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	0	USD
CY2017	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	558000	USD
CY2019	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2018	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	938000	USD
CY2017	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	419000	USD
CY2019	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	32111000	USD
CY2018	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	96027000	USD
CY2017	us-gaap	Transfer Of Portfolio Loans And Leases To Held For Sale1 TransferOfPortfolioLoansAndLeasesToHeldForSale1	0	USD
CY2019	htlf	Transfer Of Deposits To Heldforsale TransferOfDepositsToHeldforsale	76968000	USD
CY2018	htlf	Transfer Of Deposits To Heldforsale TransferOfDepositsToHeldforsale	106409000	USD
CY2017	htlf	Transfer Of Deposits To Heldforsale TransferOfDepositsToHeldforsale	0	USD
CY2019	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	92258000	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	238075000	USD
CY2017	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	175196000	USD
CY2019	htlf	Threshold Periodof Consecutive Paymentsto Removefrom Nonaccrual Status ThresholdPeriodofConsecutivePaymentstoRemovefromNonaccrualStatus	P6M
CY2019	htlf	Threshold Period After Modification Holding Current Statustobe Consideredin Compliancewith Modified Terms ThresholdPeriodAfterModificationHoldingCurrentStatustobeConsideredinCompliancewithModifiedTerms	P30D
CY2019Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	616700000	USD
CY2018Q4	us-gaap	Principal Amount Outstanding On Loans Managed And Securitized PrincipalAmountOutstandingOnLoansManagedAndSecuritized	648900000	USD
CY2018Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	0	USD
CY2019Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	0	USD
CY2019	htlf	Threshold Period Past Duefor Nonperforming Statusof Financing Receivable ThresholdPeriodPastDueforNonperformingStatusofFinancingReceivable	P90D
CY2019	htlf	Financing Receivable Periodof Repayment Performance FinancingReceivablePeriodofRepaymentPerformance	P6M
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	75226000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	35991000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	33012000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	28168000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	71000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	149129000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	116998000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	75272000	USD
CY2019	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2018	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	39000	USD
CY2017	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	58000	USD
CY2019	htlf	Tax Expense Benefiton Intereston Convertible Debt TaxExpenseBenefitonInterestonConvertibleDebt	0	USD
CY2018	htlf	Tax Expense Benefiton Intereston Convertible Debt TaxExpenseBenefitonInterestonConvertibleDebt	0	USD
CY2017	htlf	Tax Expense Benefiton Intereston Convertible Debt TaxExpenseBenefitonInterestonConvertibleDebt	-12000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	149129000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	116959000	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	201000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	258000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36062000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	33213000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	28426000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.14
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.54
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.67
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.14
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.52
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.65
CY2019Q4	htlf	Reserve Requirement Federal Reserve Bank ReserveRequirementFederalReserveBank	46800000	USD
CY2018Q4	htlf	Reserve Requirement Federal Reserve Bank ReserveRequirementFederalReserveBank	15200000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	3292998000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	29765000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	28402000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	3294361000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	18435000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	18435000	USD
CY2019Q4	htlf	Marketable Securities Amortized Cost Basis MarketableSecuritiesAmortizedCostBasis	3311433000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	29765000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	28402000	USD
CY2019Q4	us-gaap	Marketable Securities MarketableSecurities	3312796000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	17086000	USD
CY2018Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	17086000	USD
CY2018Q4	htlf	Marketable Securities Amortized Cost Basis MarketableSecuritiesAmortizedCostBasis	2492620000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	4662000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	46573000	USD
CY2018Q4	us-gaap	Marketable Securities MarketableSecurities	2450709000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	18400000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	18400000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	525000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	91324000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	9160000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	100484000	USD
CY2018Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	236283000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	9554000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	496000	USD
CY2019Q4	us-gaap	Trading Securities TradingSecurities	3312796000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	245341000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	12121000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	12171000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	28111000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	28434000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	76299000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	77942000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	597386000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	598536000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	713917000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	717083000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	2579081000	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	2577278000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	18435000	USD
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	18435000	USD
CY2019Q4	us-gaap	Debt Securities Trading And Equity Securities Fv Ni Cost DebtSecuritiesTradingAndEquitySecuritiesFvNiCost	3311433000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	2443000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	2472000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	17604000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	18153000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	59708000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	64775000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsNetCarryingAmount	11569000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	15084000	USD
CY2019Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	91324000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	100484000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1628467000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	727895000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1456750000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	11774000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	3661000	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	10585000	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	4115000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	2576000	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	3812000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1619266000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	23588000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	241232000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	4814000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1860498000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	28402000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	793718000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	9533000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1067809000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	37040000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1861527000	USD
CY2018Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	46573000	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	0	USD
CY2019Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	0	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	10802000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	17000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	19508000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	479000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Fair Value HeldToMaturitySecuritiesContinuousUnrealizedLossPositionFairValue	30310000	USD
CY2018Q4	us-gaap	Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss HeldToMaturitySecuritiesContinuousUnrealizedLossPositionAccumulatedLoss	496000	USD
CY2018	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2019	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2017	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	0	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	16800000	USD
CY2018Q4	us-gaap	Federal Home Loan Bank Stock FederalHomeLoanBankStock	16600000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8373497000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7410881000	USD
CY2019Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	680000	USD
CY2018Q4	us-gaap	Unamortized Loan Commitment And Origination Fees And Unamortized Discounts Or Premiums UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums	1624000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	4900000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Deferred Income LoansAndLeasesReceivableDeferredIncome	1560000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	8367917000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Of Deferred Income LoansAndLeasesReceivableNetOfDeferredIncome	7407697000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	70395000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Allowance LoansAndLeasesReceivableAllowance	61963000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	8297522000	USD
CY2019Q4	htlf	Nonaccrual Loans NonaccrualLoans	72754000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Net Reported Amount Covered And Not Covered LoansAndLeasesReceivableNetReportedAmountCoveredAndNotCovered	7345734000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8172000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	62223000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	70395000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	87052000	USD
CY2019Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	8286445000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8373497000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	7554000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	54409000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61963000	USD
CY2018Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	81796000	USD
CY2018Q4	us-gaap	Financing Receivable Collectively Evaluated For Impairment FinancingReceivableCollectivelyEvaluatedForImpairment	7329085000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7410881000	USD
CY2018	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	2559000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	76548000	USD
CY2018Q4	htlf	Nonaccrual Loans NonaccrualLoans	67833000	USD
CY2019Q4	htlf	Financing Receivable Modifications Recorded Investment Nonaccrual Status FinancingReceivableModificationsRecordedInvestmentNonaccrualStatus	3794000	USD
CY2018Q4	htlf	Financing Receivable Modifications Recorded Investment Nonaccrual Status FinancingReceivableModificationsRecordedInvestmentNonaccrualStatus	4110000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	76548000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	71943000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	4105000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	726000	USD
CY2019Q4	htlf	Financing Receivable Modifications Recorded Investment Performing FinancingReceivableModificationsRecordedInvestmentPerforming	3794000	USD
CY2018Q4	htlf	Financing Receivable Modifications Recorded Investment Performing FinancingReceivableModificationsRecordedInvestmentPerforming	4026000	USD
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	7600000	USD
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	8100000	USD
CY2019	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	7	loan
CY2019	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	663000	USD
CY2019	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	689000	USD
CY2018	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	16	loan
CY2018	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	2843000	USD
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	2	loan
CY2019	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	210000	USD
CY2018	us-gaap	Financing Receivable Modifications Subsequent Default Number Of Contracts1 FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1	7	loan
CY2018	us-gaap	Financing Receivable Modifications Subsequent Default Recorded Investment1 FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1	1036000	USD
CY2019Q4	htlf	Internal Credit Quality Indicator Doubtful Numberof Loans InternalCreditQualityIndicatorDoubtfulNumberofLoans	0	loan
CY2019Q4	htlf	Internal Credit Quality Indicator Loss Numberof Loans InternalCreditQualityIndicatorLossNumberofLoans	0	loan
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8373497000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7410881000	USD
CY2019Q4	htlf	Financing Receivable Recorded Investment30to89 Days Past Due Percentage FinancingReceivableRecordedInvestment30to89DaysPastDuePercentage	0.0033
CY2018Q4	htlf	Financing Receivable Recorded Investment30to89 Days Past Due Percentage FinancingReceivableRecordedInvestment30to89DaysPastDuePercentage	0.0021
CY2019Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	2700000	USD
CY2019	htlf	Threshold Period Past Duefor Nonperforming Statusof Financing Receivable ThresholdPeriodPastDueforNonperformingStatusofFinancingReceivable	P90D
CY2019	htlf	Financing Receivable Periodof Repayment Performance FinancingReceivablePeriodofRepaymentPerformance	P6M
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	31928000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	8265021000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	8373497000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	16650000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	7322288000	USD
CY2018Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	71943000	USD
CY2018Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	7410881000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	17721000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	17189000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8172000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	18217000	USD
CY2019	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	39000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	75171000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	69863000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	67721000	USD
CY2019	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	1596000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	92892000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAdditions	508000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	2479000	USD
CY2018	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	82299000	USD
CY2018	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1059000	USD
CY2018	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	1633331000	USD
CY2018	us-gaap	Impaired Financing Receivable With Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithRelatedAllowanceInterestIncomeAccrualMethod	101000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithNoRelatedAllowanceUnpaidPrincipalBalance	69265000	USD
CY2019	us-gaap	Financing Receivable Significant Purchases FinancingReceivableSignificantPurchases	1748634000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	227000	USD
CY2017Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	57000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Additions CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAdditions	64000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	7554000	USD
CY2018	us-gaap	Impaired Financing Receivable With Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceAverageRecordedInvestment	15399000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	87052000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8172000	USD
CY2019	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	85938000	USD
CY2019	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	1635000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Unpaid Principal Balance ImpairedFinancingReceivableWithRelatedAllowanceUnpaidPrincipalBalance	17005000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With Related Allowance Recorded Investment ImpairedFinancingReceivableWithRelatedAllowanceRecordedInvestment	16995000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable With No Related Allowance Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceRecordedInvestment	64801000	USD
CY2018	us-gaap	Impaired Financing Receivable With No Related Allowance Average Recorded Investment ImpairedFinancingReceivableWithNoRelatedAllowanceAverageRecordedInvestment	66900000	USD
CY2018	us-gaap	Impaired Financing Receivable With No Related Allowance Interest Income Accrual Method ImpairedFinancingReceivableWithNoRelatedAllowanceInterestIncomeAccrualMethod	958000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	86270000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	81796000	USD
CY2018Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	7554000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Accretion CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion	1743000	USD
CY2019	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	2581000	USD
CY2018	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield Reclassifications From Nonaccretable Difference CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference	1405000	USD
CY2019Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	393000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	70395000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	55686000	USD
CY2018Q4	us-gaap	Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Accretable Yield CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield	227000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	124983000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	115673000	USD
CY2019	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	91287000	USD
CY2018	us-gaap	Loans And Leases Receivable Related Parties Additions LoansAndLeasesReceivableRelatedPartiesAdditions	44771000	USD
CY2019	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	31702000	USD
CY2018	us-gaap	Loans And Leases Receivable Related Parties Proceeds LoansAndLeasesReceivableRelatedPartiesProceeds	35461000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	184568000	USD
CY2018Q4	us-gaap	Loans And Leases Receivable Related Parties LoansAndLeasesReceivableRelatedParties	124983000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61963000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	55686000	USD
CY2016Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54324000	USD
CY2017	us-gaap	Depreciation Depreciation	11100000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16657000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	24013000	USD
CY2017	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	15563000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	5365000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3549000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3670000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	13590000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	21285000	USD
CY2017	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	17871000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	70395000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61963000	USD
CY2017Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	55686000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61963000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	13590000	USD
CY2019	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	5365000	USD
CY2019	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16657000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	21285000	USD
CY2018	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	3549000	USD
CY2018	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	24013000	USD
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	61963000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	302899000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	289543000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	105341000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	102125000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	197558000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	187418000	USD
CY2019	us-gaap	Depreciation Depreciation	12000000.0	USD
CY2018	us-gaap	Depreciation Depreciation	11700000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	446300000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	391700000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	112836000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	57412000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	55424000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	133879000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	55328000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	78551000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	12320000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	10198000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	8375000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	7193000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5829000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	11509000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	55424000	USD
CY2019Q4	htlf	Mortgage Loans Serviced For Others Amount MortgageLoansServicedForOthersAmount	616700000	USD
CY2018Q4	htlf	Mortgage Loans Serviced For Others Amount MortgageLoansServicedForOthersAmount	648900000	USD
CY2019Q4	us-gaap	Escrow Deposit EscrowDeposit	5000000.0	USD
CY2018Q4	us-gaap	Escrow Deposit EscrowDeposit	5900000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year One TimeDepositMaturitiesYearOne	802410000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Two TimeDepositMaturitiesYearTwo	268777000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Three TimeDepositMaturitiesYearThree	63822000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Four TimeDepositMaturitiesYearFour	24963000	USD
CY2019Q4	us-gaap	Time Deposit Maturities Year Five TimeDepositMaturitiesYearFive	20755000	USD
CY2019Q4	us-gaap	Time Deposit Maturities After Year Five TimeDepositMaturitiesAfterYearFive	12316000	USD
CY2019Q4	us-gaap	Time Deposits TimeDeposits	1193043000	USD
CY2019Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	695800000	USD
CY2018Q4	us-gaap	Time Deposits100000 Or More TimeDeposits100000OrMore	585700000	USD
CY2019Q4	htlf	Time Depositsover250000 TimeDepositsover250000	329100000	USD
CY2018Q4	htlf	Time Depositsover250000 TimeDepositsover250000	307100000	USD
CY2019	us-gaap	Interest Expense Now Accounts Money Market Accounts And Savings Deposits InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits	47069000	USD
CY2018	us-gaap	Interest Expense Now Accounts Money Market Accounts And Savings Deposits InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits	25123000	USD
CY2017	us-gaap	Interest Expense Now Accounts Money Market Accounts And Savings Deposits InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits	11107000	USD
CY2019	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	9344000	USD
CY2018	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	4789000	USD
CY2017	us-gaap	Interest Expense Time Deposits100000 Or More InterestExpenseTimeDeposits100000OrMore	3016000	USD
CY2019	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	7321000	USD
CY2018	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	5755000	USD
CY2017	us-gaap	Interest Expense Time Deposits Less Than100000 InterestExpenseTimeDepositsLessThan100000	4156000	USD
CY2019	us-gaap	Interest Expense Deposits InterestExpenseDeposits	63734000	USD
CY2018	us-gaap	Interest Expense Deposits InterestExpenseDeposits	35667000	USD
CY2017	us-gaap	Interest Expense Deposits InterestExpenseDeposits	18279000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	182626000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	227010000	USD
CY2019	htlf	Number Of Credit Lines NumberOfCreditLines	1	credit_line
CY2019	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	226096000	USD
CY2018	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	229890000	USD
CY2017	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	324691000	USD
CY2019	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	128098000	USD
CY2018	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	152391000	USD
CY2017	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	182846000	USD
CY2019	htlf	Short Term Debt Weighted Average Interest Rate During Period ShortTermDebtWeightedAverageInterestRateDuringPeriod	0.0138
CY2018	htlf	Short Term Debt Weighted Average Interest Rate During Period ShortTermDebtWeightedAverageInterestRateDuringPeriod	0.0119
CY2017	htlf	Short Term Debt Weighted Average Interest Rate During Period ShortTermDebtWeightedAverageInterestRateDuringPeriod	0.0036
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0121
CY2018Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0196
CY2017Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0111
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	275773000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	274905000	USD
CY2019Q4	htlf	Federal Home Loan Bank Advances General Debt Obligations Disclosures Required Collateral Amount Of Fhlb Stock FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresRequiredCollateralAmountOfFhlbStock	11300000	USD
CY2018Q4	htlf	Federal Home Loan Bank Advances General Debt Obligations Disclosures Required Collateral Amount Of Fhlb Stock FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresRequiredCollateralAmountOfFhlbStock	13300000	USD
CY2019Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	4110000000	USD
CY2018Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Loans Receivable Pledged For Federal Home Loan Bank Debt PledgedFinancialInstrumentsNotSeparatelyReportedLoansReceivablePledgedForFederalHomeLoanBankDebt	3710000000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Maximum Amount Available FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresMaximumAmountAvailable	1560000000	USD
CY2019	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-406000	USD
CY2019	htlf	Number Of Wholly Owned Trust Subsidiaries That Issue Preferred Securities NumberOfWhollyOwnedTrustSubsidiariesThatIssuePreferredSecurities	15	subsidiary
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss Reclassification After Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax	197000	USD
CY2019Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	90000	USD
CY2019Q4	us-gaap	Senior Notes SeniorNotes	0	USD
CY2018Q4	us-gaap	Senior Notes SeniorNotes	5000000.0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	8705000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	24682000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	4657000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	3037000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	77437000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	157255000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	275773000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	1900000	USD
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	0	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	24106000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16769000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	25532000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	11298000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	8686000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5025000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	35404000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25455000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	30557000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	760000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2615000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	12370000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1174000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	145000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	893000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-414000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2760000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	13263000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34990000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28215000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43820000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	10400000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	11148000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	563000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Derivative Instruments DeferredTaxAssetsDerivativeInstruments	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	17686000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	16682000	USD
CY2019Q4	htlf	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Deferred Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsDeferredCompensation	8071000	USD
CY2018Q4	htlf	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Deferred Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsDeferredCompensation	7042000	USD
CY2019Q4	htlf	Deferred Tax Assets Organization And Acquisition Costs DeferredTaxAssetsOrganizationAndAcquisitionCosts	337000	USD
CY2018Q4	htlf	Deferred Tax Assets Organization And Acquisition Costs DeferredTaxAssetsOrganizationAndAcquisitionCosts	319000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	18459000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	14495000	USD
CY2019Q4	htlf	Deferred Tax Assets Non Accrual Loan Interest DeferredTaxAssetsNonAccrualLoanInterest	853000	USD
CY2018Q4	htlf	Deferred Tax Assets Non Accrual Loan Interest DeferredTaxAssetsNonAccrualLoanInterest	863000	USD
CY2019Q4	htlf	Deferred Tax Assets Tax Deferred Expense Write Downs Of Other Real Estate Owned DeferredTaxAssetsTaxDeferredExpenseWriteDownsOfOtherRealEstateOwned	921000	USD
CY2018Q4	htlf	Deferred Tax Assets Tax Deferred Expense Write Downs Of Other Real Estate Owned DeferredTaxAssetsTaxDeferredExpenseWriteDownsOfOtherRealEstateOwned	1469000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	4252000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	5254000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2643000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1961000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	53785000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	59233000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12379000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12125000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	41406000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	47108000	USD
CY2019Q4	htlf	Deferred Tax Liabilities Unrealized Losses On Available For Sale Securities Gross DeferredTaxLiabilitiesUnrealizedLossesOnAvailableForSaleSecuritiesGross	279000	USD
CY2018Q4	htlf	Deferred Tax Liabilities Unrealized Losses On Available For Sale Securities Gross DeferredTaxLiabilitiesUnrealizedLossesOnAvailableForSaleSecuritiesGross	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	160000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	4240000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investments DeferredTaxLiabilitiesInvestments	2332000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6232000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	6514000	USD
CY2019Q4	htlf	Deferred Tax Liabilities Tax Bad Debt Reserves DeferredTaxLiabilitiesTaxBadDebtReserves	422000	USD
CY2018Q4	htlf	Deferred Tax Liabilities Tax Bad Debt Reserves DeferredTaxLiabilitiesTaxBadDebtReserves	427000	USD
CY2019Q4	htlf	Deferred Tax Liabilities Purchase Accounting DeferredTaxLiabilitiesPurchaseAccounting	7824000	USD
CY2018Q4	htlf	Deferred Tax Liabilities Purchase Accounting DeferredTaxLiabilitiesPurchaseAccounting	6339000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	2176000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	203000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	1421000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	7933000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	3342000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	3321000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1870000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	380000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27806000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	27609000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	13600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	19499000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	4500000	USD
CY2019Q4	htlf	Operating Loss Carryforwards Limitations On Use Annual Amount OperatingLossCarryforwardsLimitationsOnUseAnnualAmount	6800000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	11800000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	9400000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	38665000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	30495000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	41682000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3281000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	4423000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	9282000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	8509000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6976000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3846000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	6860000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	4085000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	2390000	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-1648000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	23000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	405000	USD
CY2019	htlf	Effective Income Tax Rate Reconciliation Sharebased Compensation Federal Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationFederalExcessTaxBenefitAmount	229000	USD
CY2018	htlf	Effective Income Tax Rate Reconciliation Sharebased Compensation Federal Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationFederalExcessTaxBenefitAmount	657000	USD
CY2017	htlf	Effective Income Tax Rate Reconciliation Sharebased Compensation Federal Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationFederalExcessTaxBenefitAmount	1130000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount	10396000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-166000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-114000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	293000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	34990000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28215000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	43820000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.190
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.194
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.368
CY2019Q4	htlf	Investment In Low Income Housing InvestmentInLowIncomeHousing	6100000	USD
CY2018Q4	htlf	Investment In Low Income Housing InvestmentInLowIncomeHousing	6900000	USD
CY2017Q4	htlf	Investment In Low Income Housing InvestmentInLowIncomeHousing	7800000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	657000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	69000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	611000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	66000	USD
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CY2019	htlf	Defined Contribution Plan Contributions By Employer DefinedContributionPlanContributionsByEmployer	3900000	USD
CY2018	htlf	Defined Contribution Plan Contributions By Employer DefinedContributionPlanContributionsByEmployer	3500000	USD
CY2017	htlf	Defined Contribution Plan Contributions By Employer DefinedContributionPlanContributionsByEmployer	3300000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4800000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4000000.0	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4100000	USD
CY2018Q4	us-gaap	Assets Sold Under Agreements To Repurchase Repurchase Liability AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability	313000	USD
CY2019Q4	us-gaap	Assets Sold Under Agreements To Repurchase Repurchase Liability AssetsSoldUnderAgreementsToRepurchaseRepurchaseLiability	313000	USD
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CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	266000	USD
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CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	26400	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.60
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	6500	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.60
CY2017	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	19400	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.60
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	500	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	18.60
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6500	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.60
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	0	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	0
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	6500	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	18.60
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested In Period Fair Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedInPeriodFairValue1	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	121000	USD
CY2012Q1	us-gaap	Preferred Stock Dividend Rate Per Dollar Amount PreferredStockDividendRatePerDollarAmount	1.00
CY2012Q1	us-gaap	Preferred Stock Liquidation Preference PreferredStockLiquidationPreference	1000
CY2012Q1	htlf	Preferred Stock Number Of Voting Rights PreferredStockNumberOfVotingRights	1000	votes
CY2012Q1	htlf	Common Stock Shares Market Valueasa Percentageof Purchase Price CommonStockSharesMarketValueasaPercentageofPurchasePrice	2
CY2019Q4	us-gaap	Capital Capital	1388511000	USD
CY2019Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1375
CY2019Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	807881000	USD
CY2019Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2019Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1243582000	USD
CY2019Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1231
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	605911000	USD
CY2019Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2019Q4	htlf	Common Equity Tier1 Capital CommonEquityTier1Capital	1098428000	USD
CY2019Q4	htlf	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.1088
CY2019Q4	htlf	Common Equity Tier1 Capital Requiredfor Capital Adequacy CommonEquityTier1CapitalRequiredforCapitalAdequacy	454433000	USD
CY2019Q4	htlf	Common Equity Tier1 Capital Requiredfor Capital Adequacyto Risk Weighted Assets CommonEquityTier1CapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.0450
CY2019Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1243582000	USD
CY2019Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.1010
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	492725000	USD
CY2019Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2018Q4	us-gaap	Capital Capital	1200947000	USD
CY2018Q4	us-gaap	Capital To Risk Weighted Assets CapitalToRiskWeightedAssets	0.1372
CY2018Q4	us-gaap	Capital Required For Capital Adequacy CapitalRequiredForCapitalAdequacy	700490000	USD
CY2018Q4	us-gaap	Capital Required For Capital Adequacy To Risk Weighted Assets CapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0800
CY2018Q4	us-gaap	Tier One Risk Based Capital TierOneRiskBasedCapital	1064669000	USD
CY2018Q4	us-gaap	Tier One Risk Based Capital To Risk Weighted Assets TierOneRiskBasedCapitalToRiskWeightedAssets	0.1216
CY2018Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy TierOneRiskBasedCapitalRequiredForCapitalAdequacy	525368000	USD
CY2018Q4	us-gaap	Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets	0.0600
CY2018Q4	htlf	Common Equity Tier1 Capital CommonEquityTier1Capital	933755000	USD
CY2018Q4	htlf	Common Equity Tier1 Capitalto Risk Weighted Assets CommonEquityTier1CapitaltoRiskWeightedAssets	0.1066
CY2018Q4	htlf	Common Equity Tier1 Capital Requiredfor Capital Adequacy CommonEquityTier1CapitalRequiredforCapitalAdequacy	394026000	USD
CY2018Q4	htlf	Common Equity Tier1 Capital Requiredfor Capital Adequacyto Risk Weighted Assets CommonEquityTier1CapitalRequiredforCapitalAdequacytoRiskWeightedAssets	0.0450
CY2018Q4	us-gaap	Tier One Leverage Capital TierOneLeverageCapital	1064669000	USD
CY2018Q4	us-gaap	Tier One Leverage Capital To Average Assets TierOneLeverageCapitalToAverageAssets	0.0973
CY2018Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy TierOneLeverageCapitalRequiredForCapitalAdequacy	437858000	USD
CY2018Q4	us-gaap	Tier One Leverage Capital Required For Capital Adequacy To Average Assets TierOneLeverageCapitalRequiredForCapitalAdequacyToAverageAssets	0.0400
CY2018	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	4762000	USD
CY2017	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	5335000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	75342000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	71612000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	59034000	USD
CY2019	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	4843000	USD
CY2018	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	7292000	USD
CY2017	us-gaap	Investment Banking Advisory Brokerage And Underwriting Fees And Commissions InvestmentBankingAdvisoryBrokerageAndUnderwritingFeesAndCommissions	5636000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	7659000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	1085000	USD
CY2017	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	6973000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	525000	USD
CY2018	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	212000	USD
CY2017	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	0	USD
CY2019	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	15555000	USD
CY2018	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	21450000	USD
CY2017	us-gaap	Gain Loss On Sale Of Loans And Leases GainLossOnSaleOfLoansAndLeases	22251000	USD
CY2019	htlf	Commercial Servicing Rights Csr Impairment Recovery CommercialServicingRightsCSRImpairmentRecovery	-911000	USD
CY2018	htlf	Commercial Servicing Rights Csr Impairment Recovery CommercialServicingRightsCSRImpairmentRecovery	-46000	USD
CY2017	htlf	Commercial Servicing Rights Csr Impairment Recovery CommercialServicingRightsCSRImpairmentRecovery	21000	USD
CY2019	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3785000	USD
CY2018	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2793000	USD
CY2017	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	2772000	USD
CY2019	us-gaap	Noninterest Income Other Operating Income NoninterestIncomeOtherOperatingIncome	9410000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	6031000	USD
CY2019	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	40866000	USD
CY2018	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	37548000	USD
CY2017	htlf	Noninterest Income Excluding Revenue From Contract With Customer NoninterestIncomeExcludingRevenueFromContractWithCustomer	42988000	USD
CY2019	us-gaap	Noninterest Income NoninterestIncome	116208000	USD
CY2018	us-gaap	Noninterest Income NoninterestIncome	109160000	USD
CY2017	us-gaap	Noninterest Income NoninterestIncome	102022000	USD
CY2019	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	6000000	USD
CY2018	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	0	USD
CY2017	us-gaap	Repayment Of Notes Receivable From Related Parties RepaymentOfNotesReceivableFromRelatedParties	0	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1635000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23200000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23200000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24617000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	145000	USD
CY2019	us-gaap	Lease Cost LeaseCost	6176000	USD
CY2019	us-gaap	Lease Cost LeaseCost	6176000	USD
CY2019	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Right Of Use Assets OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfRightOfUseAssets	1771000	USD
CY2019	htlf	Operating Lease Liability Lease Modifications Noncash Reduction Of Lease Liabilities OperatingLeaseLiabilityLeaseModificationsNoncashReductionOfLeaseLiabilities	1789000	USD
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y7M9D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0300
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	5661000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5408000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4076000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2723000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	2015000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	7300000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	27183000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	2566000	USD
CY2019Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4918000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24617000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	5776000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5493000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	5102000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3241000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2297000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	12419000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	34328000	USD
CY2019Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	112745000	USD
CY2019Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	111321000	USD
CY2019Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	106708000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	102955000	USD
CY2019Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4903000	USD
CY2019Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	5201000	USD
CY2019Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	107842000	USD
CY2019Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	106120000	USD
CY2019Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	101790000	USD
CY2019Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	101320000	USD
CY2019Q4	us-gaap	Noninterest Income NoninterestIncome	28030000	USD
CY2019Q3	us-gaap	Noninterest Income NoninterestIncome	29400000	USD
CY2019Q2	us-gaap	Noninterest Income NoninterestIncome	32061000	USD
CY2019Q1	us-gaap	Noninterest Income NoninterestIncome	26717000	USD
CY2019Q4	us-gaap	Noninterest Expense NoninterestExpense	92866000	USD
CY2019Q3	us-gaap	Noninterest Expense NoninterestExpense	92967000	USD
CY2019Q2	us-gaap	Noninterest Expense NoninterestExpense	75098000	USD
CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	88230000	USD
CY2019Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5155000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7941000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13584000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8310000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	37851000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	34612000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	45169000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	31497000	USD
CY2019Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	37851000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	34612000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	45169000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	31497000	USD
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.94
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.26
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.26
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.91
CY2019Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2019Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.18
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.16
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.16
CY2019Q4	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	43.00
CY2019Q3	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	42.62
CY2019Q2	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	41.48
CY2019Q1	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	39.65
CY2019Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36758025	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36692381	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	35743986	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34564378	shares
CY2019Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36840519	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36835191	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	35879259	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34699839	shares
CY2018Q4	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	110283000	USD
CY2018Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	110678000	USD
CY2018Q2	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	101409000	USD
CY2018Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	91584000	USD
CY2018Q4	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	9681000	USD
CY2018Q3	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	5238000	USD
CY2018Q2	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4831000	USD
CY2018Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	4263000	USD
CY2018Q4	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	100602000	USD
CY2018Q3	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	105440000	USD
CY2018Q2	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	96578000	USD
CY2018Q1	us-gaap	Interest Income Expense After Provision For Loan Loss InterestIncomeExpenseAfterProvisionForLoanLoss	87321000	USD
CY2018Q4	us-gaap	Noninterest Income NoninterestIncome	27045000	USD
CY2018Q3	us-gaap	Noninterest Income NoninterestIncome	29765000	USD
CY2018Q2	us-gaap	Noninterest Income NoninterestIncome	27634000	USD
CY2018Q1	us-gaap	Noninterest Income NoninterestIncome	24716000	USD
CY2018Q4	us-gaap	Noninterest Expense NoninterestExpense	88821000	USD
CY2018Q3	us-gaap	Noninterest Expense NoninterestExpense	92539000	USD
CY2018Q2	us-gaap	Noninterest Expense NoninterestExpense	88882000	USD
CY2018Q1	us-gaap	Noninterest Expense NoninterestExpense	83646000	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6685000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8956000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7451000	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5123000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	32141000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	33710000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	27879000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	23268000	USD
CY2018Q4	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	0	USD
CY2018Q3	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	13000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	13000	USD
CY2018Q1	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	13000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32141000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	33697000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	27866000	USD
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	23255000	USD
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.93
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.98
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.93
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.76
CY2018Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.19
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.14
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2018Q4	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	38.44
CY2018Q3	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	37.14
CY2018Q2	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	36.44
CY2018Q1	htlf	Common Stock Book Value Per Share CommonStockBookValuePerShare	33.81
CY2018Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34474336	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	34452377	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32620775	shares
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30441776	shares
CY2018Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34670180	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	34644187	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32830751	shares

Files In Submission

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$HTLF
HEARTLAND FINANCIAL USA INC Stock $htlf

2018 Q4 Form 10-K Financial Statement

#000092011220000058 Filed on February 26, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLF HEARTLAND FINANCIAL USA INC Stock $htlf

2018 Q4 Form 10-K Financial Statement

#000092011220000058 Filed on February 26, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$HTLF
HEARTLAND FINANCIAL USA INC Stock $htlf