$BLKB
BLACKBAUD INC Stock $blkb

$blkb Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000128005822000010 Filed on March 01, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$247.9M	$927.7M	$242.6M
YoY Change	2.18%	1.59%	2.0%
Cost Of Revenue	$124.1M	$443.2M	$119.6M
YoY Change	3.73%	3.53%	2.66%
Gross Profit	$123.8M	$484.5M	$123.0M
YoY Change	0.65%	-0.13%	1.42%
Gross Profit Margin	49.95%	52.23%	50.71%
Selling, General & Admin	$92.70M	$332.6M	$94.50M
YoY Change	-1.9%	-3.49%	8.62%
% of Gross Profit	74.86%	68.64%	76.81%
Research & Development	$33.61M	$124.6M	$27.50M
YoY Change	22.2%	24.39%	6.18%
% of Gross Profit	27.14%	25.71%	22.35%
Depreciation & Amortization	$21.93M	$14.40M	$23.90M
YoY Change	-8.26%	-25.0%	10.14%
% of Gross Profit	17.71%	2.97%	19.43%
Operating Expenses	$126.9M	$459.6M	$122.7M
YoY Change	3.39%	2.62%	6.6%
Operating Profit	-$3.027M	$24.91M	-$850.0K
YoY Change	256.12%	-33.13%	-123.7%
Interest Expense	-$3.751M	$18.00M	-$5.000M
YoY Change	-24.98%	4.14%	13.64%
% of Operating Profit		72.28%
Other Income/Expense, Net	-$240.0K	-$212.0K	-$800.0K
YoY Change	-70.0%	10500.0%	60.0%
Pretax Income	-$10.62M	$7.083M	-$6.672M
YoY Change	59.14%	-67.23%	428.68%
Income Tax	-$3.561M	$1.385M	$6.900M
% Of Pretax Income		19.55%
Net Earnings	-$7.057M	$5.698M	-$13.62M
YoY Change	-48.19%	-26.16%	-1128.78%
Net Earnings / Revenue	-2.85%	0.61%	-5.61%
Basic Earnings Per Share		$0.12	-$0.28
Diluted Earnings Per Share	-$150.2K	$0.12	-$0.28
COMMON SHARES
Basic Shares Outstanding	48.18M shares	47.41M shares	49.57M shares
Diluted Shares Outstanding		48.23M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$55.15M	$55.15M	$36.50M
YoY Change	51.08%	51.08%	11.62%
Cash & Equivalents	$55.15M	$55.15M	$35.75M
Short-Term Investments			$800.0K
Other Short-Term Assets	$682.7M	$682.7M	$674.5M
YoY Change	1.21%	1.21%	11.41%
Inventory
Prepaid Expenses
Receivables	$102.7M	$108.2M	$95.40M
Other Receivables	$4.963M	$4.963M	$2.200M
Total Short-Term Assets	$851.0M	$851.0M	$819.1M
YoY Change	3.9%	3.89%	11.51%
LONG-TERM ASSETS
Property, Plant & Equipment	$111.4M	$286.7M	$105.2M
YoY Change	5.94%	19.6%	195.89%
Goodwill	$1.059B		$635.9M
YoY Change	66.49%		0.28%
Intangibles	$698.1M		$277.5M
YoY Change	151.54%		-12.71%
Long-Term Investments
YoY Change
Other Assets	$77.27M	$77.27M	$72.64M
YoY Change	6.37%	6.43%	11.42%
Total Long-Term Assets	$2.121B	$2.121B	$1.226B
YoY Change	73.02%	73.03%	-2.6%
TOTAL ASSETS
Total Short-Term Assets	$851.0M	$851.0M	$819.1M
Total Long-Term Assets	$2.121B	$2.121B	$1.226B
Total Assets	$2.972B	$2.972B	$2.045B
YoY Change	45.33%	45.33%	2.6%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$22.07M	$22.07M	$27.80M
YoY Change	-20.62%	-20.62%	-41.72%
Accrued Expenses	$62.61M	$62.61M	$26.80M
YoY Change	133.6%	133.6%	-52.14%
Deferred Revenue	$374.5M		$312.2M
YoY Change	19.94%		-0.67%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$18.70M	$18.70M	$12.84M
YoY Change	45.62%	46.07%	71.2%
Total Short-Term Liabilities	$1.110B	$1.110B	$1.013B
YoY Change	9.5%	9.5%	2.48%
LONG-TERM LIABILITIES
Long-Term Debt	$937.5M	$937.5M	$518.2M
YoY Change	80.91%	80.91%	12.75%
Other Long-Term Liabilities	$1.344M	$58.98M	$10.87M
YoY Change	-87.63%	79.26%	89.24%
Total Long-Term Liabilities	$938.8M	$996.5M	$529.1M
YoY Change	77.45%	80.81%	13.69%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.110B	$1.110B	$1.013B
Total Long-Term Liabilities	$938.8M	$996.5M	$529.1M
Total Liabilities	$2.255B	$2.255B	$1.619B
YoY Change	39.29%	39.29%	1.4%
SHAREHOLDERS EQUITY
Retained Earnings	$242.5M		$236.7M
YoY Change	2.43%		0.79%
Common Stock	$969.0M		$545.0M
YoY Change	77.79%		19.04%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$500.9M		$353.1M
YoY Change	41.86%		21.48%
Treasury Stock Shares	14.18M shares		12.05M shares
Shareholders Equity	$717.1M	$717.1M	$426.2M
YoY Change
Total Liabilities & Shareholders Equity	$2.972B	$2.972B	$2.045B
YoY Change	45.33%	45.33%	2.6%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	-$7.057M	$5.698M	-$13.62M
YoY Change	-48.19%	-26.16%	-1128.78%
Depreciation, Depletion And Amortization	$21.93M	$14.40M	$23.90M
YoY Change	-8.26%	-25.0%	10.14%
Cash From Operating Activities	$43.87M	$213.7M	$38.80M
YoY Change	13.07%	44.41%	-35.76%
INVESTING ACTIVITIES
Capital Expenditures	-$14.16M	$11.66M	-$13.90M
YoY Change	1.87%	-60.71%	-2.8%
Acquisitions		$419.1M
YoY Change
Other Investing Activities	-$419.1M	$0.00	$0.00
YoY Change
Cash From Investing Activities	-$433.3M	-$471.3M	-$13.90M
YoY Change	3017.12%	555.94%	-2.11%
FINANCING ACTIVITIES
Cash Dividend Paid		$0.00
YoY Change		-100.0%
Common Stock Issuance & Retirement, Net		$108.4M
YoY Change		164.42%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	797.3M	$264.1M	383.1M
YoY Change	108.11%	-2573.15%	49.77%
NET CHANGE
Cash From Operating Activities	43.87M	$213.7M	38.80M
Cash From Investing Activities	-433.3M	-$471.3M	-13.90M
Cash From Financing Activities	797.3M	$264.1M	383.1M
Net Change In Cash	407.8M	$6.793M	408.0M
YoY Change	-0.04%	-89.96%	35.1%
FREE CASH FLOW
Cash From Operating Activities	$43.87M	$213.7M	$38.80M
Capital Expenditures	-$14.16M	$11.66M	-$13.90M
Free Cash Flow	$58.03M	$202.0M	$52.70M
YoY Change	10.12%	70.8%	-29.45%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001280058
CY2020Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList
CY2021Q4	us-gaap	Operating Lease Liability Current Statement Of Financial Position Extensible List OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	000-50600
CY2021	dei	Entity Registrant Name EntityRegistrantName	Blackbaud, Inc.
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	11-2617163
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	65 Fairchild Street
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Charleston
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	SC
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	29492
CY2021	dei	City Area Code CityAreaCode	843
CY2021	dei	Local Phone Number LocalPhoneNumber	216-6200
CY2021	dei	Security12b Title Security12bTitle	Common Stock, $0.001 Par Value
CY2021	dei	Trading Symbol TradingSymbol	BLKB
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	2865911731	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	51966285	shares
CY2021	dei	Auditor Firm AuditorFirmId	238
CY2021	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2021	dei	Auditor Location AuditorLocation	Atlanta, Georgia
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	55146000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	35750000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	596616000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	609219000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	11155000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	10292000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	698052000	USD
CY2021Q4	us-gaap	Other Restricted Assets Current OtherRestrictedAssetsCurrent	977000	USD
CY2020Q4	us-gaap	Other Restricted Assets Current OtherRestrictedAssetsCurrent	321000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	95506000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	102726000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	95404000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	78366000	USD
CY2021Q4	us-gaap	Assets Current AssetsCurrent	850971000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	819060000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	111428000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	105177000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	53883000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	22671000	USD
CY2021Q4	us-gaap	Capitalized Software Development Costs For Software Sold To Customers CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers	121377000	USD
CY2020Q4	us-gaap	Capitalized Software Development Costs For Software Sold To Customers CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers	111827000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	1058640000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	635854000	USD
CY2020Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1013404000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	937483000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	277506000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	77266000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72639000	USD
CY2021Q4	us-gaap	Assets Assets	2971617000	USD
CY2020Q4	us-gaap	Assets Assets	2044734000	USD
CY2021Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	22067000	USD
CY2020Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	27836000	USD
CY2021Q4	blkb	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	100096000	USD
CY2020Q4	blkb	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	52228000	USD
CY2021Q4	blkb	Due To Customers Current DueToCustomersCurrent	594273000	USD
CY2020Q4	blkb	Due To Customers Current DueToCustomersCurrent	608264000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	18697000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	12840000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	374499000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	312236000	USD
CY2021Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1109632000	USD
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	180000000	shares
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	518193000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	148465000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	54086000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	4247000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	4678000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	53386000	USD
CY2020Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	17357000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1344000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	10866000	USD
CY2021Q4	us-gaap	Liabilities Liabilities	2254557000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	1618584000	USD
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2020Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	180000000	shares
CY2021Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	66165666	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	60904638	shares
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	66000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	61000	USD
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	968927000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	544963000	USD
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	14182805	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	12054268	shares
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	500911000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	353091000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	6522000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2497000	USD
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	242456000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	236714000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	717060000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	426150000	USD
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2971617000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2044734000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	927740000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	913219000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	900423000	USD
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	443195000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	428065000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	418424000	USD
CY2021	us-gaap	Gross Profit GrossProfit	484545000	USD
CY2020	us-gaap	Gross Profit GrossProfit	485154000	USD
CY2019	us-gaap	Gross Profit GrossProfit	481999000	USD
CY2021	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	186314000	USD
CY2020	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	209762000	USD
CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	224152000	USD
CY2021	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	124573000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	100146000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	106164000	USD
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	146262000	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	134852000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	113414000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2227000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2915000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5316000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	263000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	236000	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	5808000	USD
CY2021	us-gaap	Operating Expenses OperatingExpenses	459639000	USD
CY2020	us-gaap	Operating Expenses OperatingExpenses	447911000	USD
CY2019	us-gaap	Operating Expenses OperatingExpenses	454854000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	24906000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	37243000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	27145000	USD
CY2021	us-gaap	Interest Expense InterestExpense	18003000	USD
CY2020	us-gaap	Interest Expense InterestExpense	17287000	USD
CY2019	us-gaap	Interest Expense InterestExpense	20618000	USD
CY2021	blkb	Nonoperating Income Expense Excluding Interest Expense NonoperatingIncomeExpenseExcludingInterestExpense	180000	USD
CY2020	blkb	Nonoperating Income Expense Excluding Interest Expense NonoperatingIncomeExpenseExcludingInterestExpense	1658000	USD
CY2019	blkb	Nonoperating Income Expense Excluding Interest Expense NonoperatingIncomeExpenseExcludingInterestExpense	4058000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7083000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	21614000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10585000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1385000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13897000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1323000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5698000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7717000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	11908000	USD
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47412306	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48184714	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47695383	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48230438	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48696341	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48312271	shares
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	661000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	4571000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2641000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	8358000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-1778000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax Parent OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent	-2821000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	9019000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2793000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-180000	USD
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	14717000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	10510000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	11728000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5698000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7717000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	11908000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	82410000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	92735000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	85693000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	11450000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	13230000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	8725000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	120379000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	87257000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	58633000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2429000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8837000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3600000	USD
CY2021	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1570000	USD
CY2020	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	781000	USD
CY2019	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	752000	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-10490000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-2958000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4906000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6525000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18414000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	6569000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2048000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-22568000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6383000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-9670000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-19997000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	12900000	USD
CY2021	blkb	Increase Decrease Accrued Expenses And Other Liabilities IncreaseDecreaseAccruedExpensesAndOtherLiabilities	-8190000	USD
CY2020	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-485000	USD
CY2020	blkb	Increase Decrease Accrued Expenses And Other Liabilities IncreaseDecreaseAccruedExpensesAndOtherLiabilities	-49232000	USD
CY2019	blkb	Increase Decrease Accrued Expenses And Other Liabilities IncreaseDecreaseAccruedExpensesAndOtherLiabilities	-9718000	USD
CY2021	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	10526000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	12464000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	213661000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	147955000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	182477000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11664000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	29690000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11492000	USD
CY2021	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	40489000	USD
CY2020	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	42157000	USD
CY2019	us-gaap	Payments To Develop Software PaymentsToDevelopSoftware	46874000	USD
CY2021	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	419120000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	109353000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-500000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-471273000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-71847000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-167219000	USD
CY2021	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	582200000	USD
CY2020	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	748500000	USD
CY2019	us-gaap	Proceeds From Issuance Of Debt ProceedsFromIssuanceOfDebt	424000000	USD
CY2021	us-gaap	Repayments Of Debt RepaymentsOfDebt	152971000	USD
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	747563000	USD
CY2019	us-gaap	Repayments Of Debt RepaymentsOfDebt	344500000	USD
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3106000	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4586000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	39404000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	21425000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	23781000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	4000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	7000	USD
CY2021	blkb	Increase Decrease In Due To Customers IncreaseDecreaseInDueToCustomers	13464000	USD
CY2020	blkb	Increase Decrease In Due To Customers IncreaseDecreaseInDueToCustomers	-61214000	USD
CY2019	blkb	Increase Decrease In Due To Customers IncreaseDecreaseInDueToCustomers	-77793000	USD
CY2021	blkb	Change In Customer Funds Receivable ChangeInCustomerFundsReceivable	-731000	USD
CY2020	blkb	Change In Customer Funds Receivable ChangeInCustomerFundsReceivable	138000	USD
CY2019	blkb	Change In Customer Funds Receivable ChangeInCustomerFundsReceivable	1301000	USD
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	108416000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	41001000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	0	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	5960000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	23607000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	264108000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-10679000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	111213000	USD
CY2021	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	297000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	2245000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	978000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	6793000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	67674000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	127449000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	644969000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	577295000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	449846000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	651762000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	644969000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	577295000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	16386000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	15716000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	19926000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	10073000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3563000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	383000	USD
CY2021	us-gaap	Stock Issued1 StockIssued1	303633000	USD
CY2020	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2019	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2021	us-gaap	Loans Assumed1 LoansAssumed1	0	USD
CY2020	us-gaap	Loans Assumed1 LoansAssumed1	61064000	USD
CY2019	us-gaap	Loans Assumed1 LoansAssumed1	0	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1747000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	840000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	794000	USD
CY2021	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2020	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2019	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	46838000	USD
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	55146000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	35750000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	596616000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	609219000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	651762000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	644969000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	373783000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	11908000	USD
CY2019	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.48
CY2019	us-gaap	Dividends Cash DividendsCash	23607000	USD
CY2019	blkb	Exercise Of Stock Options And Stock Appreciation Rights Value ExerciseOfStockOptionsAndStockAppreciationRightsValue	7000	USD
CY2019	blkb	Surrender Of Shares Upon Restricted Stock And Restricted Unit Vesting And Exerciseof Stock Appreciation Rights SurrenderOfSharesUponRestrictedStockAndRestrictedUnitVestingAndExerciseofStockAppreciationRights	305780	shares
CY2019	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	23781000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	58633000	USD
CY2019	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-180000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	396764000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7717000	USD
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.12
CY2020	us-gaap	Dividends Cash DividendsCash	5960000	USD
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	714000	shares
CY2020	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	41001000	USD
CY2020	blkb	Exercise Of Stock Options And Stock Appreciation Rights Value ExerciseOfStockOptionsAndStockAppreciationRightsValue	4000	USD
CY2020	blkb	Surrender Of Shares Upon Restricted Stock And Restricted Unit Vesting And Exerciseof Stock Appreciation Rights SurrenderOfSharesUponRestrictedStockAndRestrictedUnitVestingAndExerciseofStockAppreciationRights	273914	shares
CY2020	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	21425000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	87257000	USD
CY2020	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	1000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2793000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	426150000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5698000	USD
CY2021	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	303633000	USD
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1592933	shares
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	108416000	USD
CY2021	blkb	Exercise Of Stock Options And Stock Appreciation Rights Value ExerciseOfStockOptionsAndStockAppreciationRightsValue	1000	USD
CY2021	blkb	Surrender Of Shares Upon Restricted Stock And Restricted Unit Vesting And Exerciseof Stock Appreciation Rights SurrenderOfSharesUponRestrictedStockAndRestrictedUnitVestingAndExerciseofStockAppreciationRights	535604	shares
CY2021	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	39404000	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	120379000	USD
CY2021	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	9019000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	717060000	USD
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Frutiger LT 45 Light',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of estimates</span></div><div style="margin-top:9pt;text-align:justify"><span style="color:#000000;font-family:'Frutiger LT 45 Light',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenues and expenses during the reporting periods. On an ongoing basis, we reconsider and evaluate our estimates and assumptions, including those that impact revenue recognition, long-lived and intangible assets, income taxes, business combinations, stock-based compensation, capitalization of software development costs, our allowances for credit losses and sales returns, costs of obtaining contracts, valuation of derivative instruments, loss contingencies and insurance recoveries, among others. Changes in the facts or circumstances underlying these estimates, including due to COVID-19, could result in material changes and actual results could materially differ from these estimates.</span></div>
CY2021	blkb	Contract Term Of Recurring Revenue Contracts At Contract Inception Years ContractTermOfRecurringRevenueContractsAtContractInceptionYears	P3Y
CY2021Q4	us-gaap	Capitalized Contract Cost Amortization Period CapitalizedContractCostAmortizationPeriod	P5Y
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	Concentration of credit riskFinancial instruments that potentially subject us to concentrations of credit risk consist of cash and cash equivalents, restricted cash due to customers and accounts receivable. Our cash and cash equivalents and restricted cash due to customers are placed with high credit-quality financial institutions. Our accounts receivable is derived from sales to customers who primarily operate in the nonprofit sector. With respect to accounts receivable, we perform ongoing evaluations of our customers and maintain an allowance for credit losses based on historical experience and our expectations of future credit losses.
CY2021Q4	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	0	USD
CY2020Q4	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	0	USD
CY2019Q4	us-gaap	Real Estate Inventory Capitalized Interest Costs RealEstateInventoryCapitalizedInterestCosts	0	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2021	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2021	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1600000	USD
CY2020	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1100000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2021	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2020	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2020Q1	blkb	Amount Reclassified Upon Adoption Of Asu201613 AmountReclassifiedUponAdoptionOfASU201613	2100000	USD
CY2020Q1	blkb	Amount Reclassified Upon Adoption Of Asu201613 AmountReclassifiedUponAdoptionOfASU201613	2100000	USD
CY2021	us-gaap	Advertising Expense AdvertisingExpense	7100000	USD
CY2020	us-gaap	Advertising Expense AdvertisingExpense	3000000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	3100000	USD
CY2021Q4	us-gaap	Business Combination Acquired Receivables Fair Value BusinessCombinationAcquiredReceivablesFairValue	12900000	USD
CY2021Q4	us-gaap	Business Acquisition Purchase Price Allocation Goodwill Expected Tax Deductible Amount BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount	14700000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	635854000	USD
CY2021	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-60000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	1058640000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	910592000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	554097000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	212540000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	276591000	USD
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	698052000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	277506000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	900000	USD
CY2021	us-gaap	Adjustment For Amortization AdjustmentForAmortization	37039000	USD
CY2020	us-gaap	Adjustment For Amortization AdjustmentForAmortization	41883000	USD
CY2019	us-gaap	Adjustment For Amortization AdjustmentForAmortization	50085000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	52677000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	57371000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	63110000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	66832000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	65545000	USD
CY2021Q4	blkb	Estimated Amortization Expensefor Finite Lived Intangible Assetsforthe Next Five Years EstimatedAmortizationExpenseforFiniteLivedIntangibleAssetsfortheNextFiveYears	305535000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	5698000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	7717000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	11908000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47412306	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48184714	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	47695383	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	818132	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	511627	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	616888	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48230438	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48696341	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48312271	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.12
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.25
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.12
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.16
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.25
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	974110	shares
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	956303	shares
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	241336	shares
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1700000	USD
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	3600000	USD
CY2020	us-gaap	Capitalized Computer Software Impairments1 CapitalizedComputerSoftwareImpairments1	4300000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	4000000	USD
CY2019	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	3800000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1400000	USD
CY2019	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	900000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	170020000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	175232000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	58592000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	70055000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	111428000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	105177000	USD
CY2020Q4	blkb	Amount Reclassified From Leasehold Improvements To Building Improvements AmountReclassifiedFromLeaseholdImprovementsToBuildingImprovements	5500000	USD
CY2021	us-gaap	Depreciation Depreciation	14400000	USD
CY2020	us-gaap	Depreciation Depreciation	19200000	USD
CY2019	us-gaap	Depreciation Depreciation	15000000	USD
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1700000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1400000	USD
CY2021Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	196337000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	164665000	USD
CY2021Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	74960000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Accumulated Amortization CapitalizedComputerSoftwareAccumulatedAmortization	52838000	USD
CY2021Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	121377000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	111827000	USD
CY2020	us-gaap	Capitalized Computer Software Impairments1 CapitalizedComputerSoftwareImpairments1	4300000	USD
CY2021	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	31000000	USD
CY2020	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	31700000	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	20700000	USD
CY2021Q4	us-gaap	Restricted Cash RestrictedCash	593296000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	607943000	USD
CY2021Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2256000	USD
CY2020Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	0	USD
CY2021Q4	us-gaap	Escrow Deposit EscrowDeposit	1064000	USD
CY2020Q4	us-gaap	Escrow Deposit EscrowDeposit	1276000	USD
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	596616000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	609219000	USD
CY2021Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	78465000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	84914000	USD
CY2021Q4	blkb	Prepaid Software Maintenance Current And Long Term PrepaidSoftwareMaintenanceCurrentAndLongTerm	28880000	USD
CY2020Q4	blkb	Prepaid Software Maintenance Current And Long Term PrepaidSoftwareMaintenanceCurrentAndLongTerm	24471000	USD
CY2021Q4	us-gaap	Estimated Insurance Recoveries EstimatedInsuranceRecoveries	18202000	USD
CY2020Q4	us-gaap	Estimated Insurance Recoveries EstimatedInsuranceRecoveries	6288000	USD
CY2021Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized After Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization	11892000	USD
CY2020Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized After Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAfterAccumulatedAmortization	11298000	USD
CY2021Q4	blkb	Derivative Instruments Current And Long Term DerivativeInstrumentsCurrentAndLongTerm	7160000	USD
CY2020Q4	blkb	Derivative Instruments Current And Long Term DerivativeInstrumentsCurrentAndLongTerm	0	USD
CY2021Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	5443000	USD
CY2020Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	10385000	USD
CY2021Q4	blkb	Prepaid Insurance Currentand Longterm PrepaidInsuranceCurrentandLongterm	5363000	USD
CY2020Q4	blkb	Prepaid Insurance Currentand Longterm PrepaidInsuranceCurrentandLongterm	1426000	USD
CY2021Q4	blkb	Taxes Prepaid And Receivable Current And Long Term TaxesPrepaidAndReceivableCurrentAndLongTerm	3986000	USD
CY2020Q4	blkb	Taxes Prepaid And Receivable Current And Long Term TaxesPrepaidAndReceivableCurrentAndLongTerm	1891000	USD
CY2021Q4	blkb	Deferred Income Taxes And Other Assets Current And Noncurrent DeferredIncomeTaxesAndOtherAssetsCurrentAndNoncurrent	1546000	USD
CY2020Q4	blkb	Deferred Income Taxes And Other Assets Current And Noncurrent DeferredIncomeTaxesAndOtherAssetsCurrentAndNoncurrent	1592000	USD
CY2021Q4	us-gaap	Other Assets OtherAssets	11835000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	8740000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	172772000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	151005000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	77266000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72639000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	95506000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	78366000	USD
CY2021	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	35500000	USD
CY2020	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	37400000	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	38100000	USD
CY2021Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	30200000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net Current CapitalizedContractCostNetCurrent	31900000	USD
CY2021Q4	blkb	Prepaid Software Maintenance And Subscriptions Current PrepaidSoftwareMaintenanceAndSubscriptionsCurrent	24700000	USD
CY2020Q4	blkb	Prepaid Software Maintenance And Subscriptions Current PrepaidSoftwareMaintenanceAndSubscriptionsCurrent	19800000	USD
CY2021	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	1900000	USD
CY2020	us-gaap	Hosting Arrangement Service Contract Implementation Cost Expense Amortization HostingArrangementServiceContractImplementationCostExpenseAmortization	800000	USD
CY2021Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAccumulatedAmortization	3000000	USD
CY2020Q4	us-gaap	Hosting Arrangement Service Contract Implementation Cost Capitalized Accumulated Amortization HostingArrangementServiceContractImplementationCostCapitalizedAccumulatedAmortization	1100000	USD
CY2021Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	19777000	USD
CY2020Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	19577000	USD
CY2021Q4	blkb	Amounts Payable To Former Option Holders Of An Acquired Company AmountsPayableToFormerOptionHoldersOfAnAcquiredCompany	17404000	USD
CY2020Q4	us-gaap	Accrued Vacation Current And Noncurrent AccruedVacationCurrentAndNoncurrent	2311000	USD
CY2020Q4	blkb	Amounts Payable To Former Option Holders Of An Acquired Company AmountsPayableToFormerOptionHoldersOfAnAcquiredCompany	0	USD
CY2021Q4	us-gaap	Accrued Professional Fees Current And Noncurrent AccruedProfessionalFeesCurrentAndNoncurrent	11724000	USD
CY2020Q4	us-gaap	Accrued Professional Fees Current And Noncurrent AccruedProfessionalFeesCurrentAndNoncurrent	4808000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9170000	USD
CY2020Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	9359000	USD
CY2021Q4	blkb	Accrued Customer Credit Balances Current And Long Term AccruedCustomerCreditBalancesCurrentAndLongTerm	8403000	USD
CY2020Q4	blkb	Accrued Customer Credit Balances Current And Long Term AccruedCustomerCreditBalancesCurrentAndLongTerm	5874000	USD
CY2021Q4	blkb	Accrued Commissions And Salaries Current And Long Term AccruedCommissionsAndSalariesCurrentAndLongTerm	7872000	USD
CY2020Q4	blkb	Accrued Commissions And Salaries Current And Long Term AccruedCommissionsAndSalariesCurrentAndLongTerm	5010000	USD
CY2021Q4	us-gaap	Accrued Bonuses Current And Noncurrent AccruedBonusesCurrentAndNoncurrent	5829000	USD
CY2020Q4	us-gaap	Accrued Bonuses Current And Noncurrent AccruedBonusesCurrentAndNoncurrent	0	USD
CY2021Q4	blkb	Accrued Transaction Based Costs Related To Payments Services AccruedTransactionBasedCostsRelatedToPaymentsServices	5427000	USD
CY2020Q4	blkb	Accrued Transaction Based Costs Related To Payments Services AccruedTransactionBasedCostsRelatedToPaymentsServices	0	USD
CY2021Q4	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	3042000	USD
CY2020Q4	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	2341000	USD
CY2021Q4	us-gaap	Accrued Vacation Current And Noncurrent AccruedVacationCurrentAndNoncurrent	2234000	USD
CY2021Q4	blkb	Unrecognized Tax Benefit Currentand Longterm UnrecognizedTaxBenefitCurrentandLongterm	1248000	USD
CY2020Q4	blkb	Unrecognized Tax Benefit Currentand Longterm UnrecognizedTaxBenefitCurrentandLongterm	3351000	USD
CY2021Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	0	USD
CY2020Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	4159000	USD
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	9310000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	6304000	USD
CY2021Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	101440000	USD
CY2020Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	63094000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1344000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	10866000	USD
CY2021Q4	blkb	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	100096000	USD
CY2020Q4	blkb	Accrued Expenses And Other Current Liabilities AccruedExpensesAndOtherCurrentLiabilities	52228000	USD
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	378746000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	316914000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	4247000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	4678000	USD
CY2021Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	374499000	USD
CY2020Q4	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	312236000	USD
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	392000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	1660000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	2802000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-212000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-2000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1256000	USD
CY2021	blkb	Nonoperating Income Expense Excluding Interest Expense NonoperatingIncomeExpenseExcludingInterestExpense	180000	USD
CY2020	blkb	Nonoperating Income Expense Excluding Interest Expense NonoperatingIncomeExpenseExcludingInterestExpense	1658000	USD
CY2019	blkb	Nonoperating Income Expense Excluding Interest Expense NonoperatingIncomeExpenseExcludingInterestExpense	4058000	USD
CY2021Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	1694000	USD
CY2020Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	3926000	USD
CY2021Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	961174000	USD
CY2020Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	534177000	USD
CY2021Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0323
CY2020Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0321
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-4994000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-3144000	USD
CY2021Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	18697000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	12840000	USD
CY2021Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	937483000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	518193000	USD
CY2017Q2	us-gaap	Debt Instrument Term DebtInstrumentTerm	P5Y
CY2017Q2	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	700000000	USD
CY2020Q4	us-gaap	Debt Instrument Term DebtInstrumentTerm	P5Y
CY2020Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	900000000	USD
CY2021	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	0.0025
CY2020Q4	blkb	Lineof Credit Facility Available Increase Capacity Amount LineofCreditFacilityAvailableIncreaseCapacityAmount	250000000	USD
CY2021Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	239500000	USD
CY2020Q4	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4000000	USD
CY2020Q4	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1200000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	-2000000	USD
CY2021Q4	us-gaap	Debt Issuance Costs Line Of Credit Arrangements Net DebtIssuanceCostsLineOfCreditArrangementsNet	1200000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	18697000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	18232000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	17859000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	853034000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1969000	USD
CY2021Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	51383000	USD
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	961174000	USD
CY2021Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	435000000	USD
CY2020	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0	USD
CY2021	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0	USD
CY2019	us-gaap	Gain Loss On Cash Flow Hedge Ineffectiveness Net GainLossOnCashFlowHedgeIneffectivenessNet	0	USD
CY2021	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2020	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2019	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	0	USD
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	9636000	USD
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	41210000	USD
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	27519000	USD
CY2021	us-gaap	Variable Lease Cost VariableLeaseCost	2478000	USD
CY2020	us-gaap	Variable Lease Cost VariableLeaseCost	4266000	USD
CY2019	us-gaap	Variable Lease Cost VariableLeaseCost	4035000	USD
CY2021	us-gaap	Sublease Income SubleaseIncome	1516000	USD
CY2020	us-gaap	Sublease Income SubleaseIncome	3120000	USD
CY2019	us-gaap	Sublease Income SubleaseIncome	3189000	USD
CY2021	us-gaap	Lease Cost LeaseCost	10598000	USD
CY2020	us-gaap	Lease Cost LeaseCost	42356000	USD
CY2019	us-gaap	Lease Cost LeaseCost	28365000	USD
CY2021	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	3600000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	4000000	USD
CY2019	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	3800000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	11706000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	10328000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	7886000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	6805000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	6109000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	32997000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	75831000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	13275000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	62556000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	53883000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	22671000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	62556000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	26716000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y10M24D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y7M6D
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P12Y6M
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0468
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0570
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0596
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	11338000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	26713000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	24569000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	5358000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	11002000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	102245000	USD
CY2021Q4	blkb	Liability Insurance Amount Total LiabilityInsuranceAmountTotal	50000000	USD
CY2021Q4	blkb	Liability Insurance Amount Deductible LiabilityInsuranceAmountDeductible	250000	USD
CY2021	blkb	Security Incident Expense SecurityIncidentExpense	40560000	USD
CY2020	blkb	Security Incident Expense SecurityIncidentExpense	9831000	USD
CY2021	blkb	Security Incident Accrued Insurance Recoveries SecurityIncidentAccruedInsuranceRecoveries	38746000	USD
CY2020	blkb	Security Incident Accrued Insurance Recoveries SecurityIncidentAccruedInsuranceRecoveries	9363000	USD
CY2021	blkb	Security Incident Net Expense SecurityIncidentNetExpense	1814000	USD
CY2020	blkb	Security Incident Net Expense SecurityIncidentNetExpense	468000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4615000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1064000	USD
CY2021Q4	blkb	Security Incident Cumulative Expense SecurityIncidentCumulativeExpense	50391000	USD
CY2020Q4	blkb	Security Incident Cumulative Expense SecurityIncidentCumulativeExpense	9831000	USD
CY2021Q4	blkb	Security Incident Cumulative Accrued Insurance Recoveries SecurityIncidentCumulativeAccruedInsuranceRecoveries	48109000	USD
CY2020Q4	blkb	Security Incident Cumulative Accrued Insurance Recoveries SecurityIncidentCumulativeAccruedInsuranceRecoveries	9363000	USD
CY2021Q4	blkb	Security Incident Cumulative Net Expense SecurityIncidentCumulativeNetExpense	2282000	USD
CY2020Q4	blkb	Security Incident Cumulative Net Expense SecurityIncidentCumulativeNetExpense	468000	USD
CY2021	us-gaap	Insurance Recoveries InsuranceRecoveries	29968000	USD
CY2020	us-gaap	Insurance Recoveries InsuranceRecoveries	3075000	USD
CY2021	blkb	Security Incident Number Of Customer Reimbursement Requests Received SecurityIncidentNumberOfCustomerReimbursementRequestsReceived	260	cases
CY2021	blkb	Security Incident Number Of Reservations Of The Right To Seek Future Expense Recovery SecurityIncidentNumberOfReservationsOfTheRightToSeekFutureExpenseRecovery	400	cases
CY2021	blkb	Security Incident Number Of Customer Reimbursement Requests Settled SecurityIncidentNumberOfCustomerReimbursementRequestsSettled	180	cases
CY2021	blkb	Security Incident Number Of Consumer Class Action Cases SecurityIncidentNumberOfConsumerClassActionCases	19	cases
CY2021	blkb	Security Incident Number Of State Attorneys General SecurityIncidentNumberOfStateAttorneysGeneral	48	cases
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-23180000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-2499000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-407000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1534000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-257000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1563000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	613000	USD
CY2021	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6570000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	3904000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	130000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	3814000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5060000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	2277000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-1724000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	222000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	7725000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-2235000	USD
CY2021	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1964000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2176000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	359000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2429000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	8837000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3600000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1385000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13897000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1323000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-4112000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	5149000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	30263000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	25726000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	5436000	USD
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7083000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	21614000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	10585000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.044
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.059
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.017
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.750
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.175
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.308
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.261
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.382
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.037
CY2021	blkb	Effective Income Tax Rate Reconciliation Aquisition Costs EffectiveIncomeTaxRateReconciliationAquisitionCosts	0.087
CY2020	blkb	Effective Income Tax Rate Reconciliation Aquisition Costs EffectiveIncomeTaxRateReconciliationAquisitionCosts	0
CY2019	blkb	Effective Income Tax Rate Reconciliation Aquisition Costs EffectiveIncomeTaxRateReconciliationAquisitionCosts	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.011
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.033
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.113
CY2021	blkb	Effective Income Tax Rate Reconciliation Global Intangible Low Tax Income Percent EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxIncomePercent	0
CY2020	blkb	Effective Income Tax Rate Reconciliation Global Intangible Low Tax Income Percent EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxIncomePercent	0.013
CY2019	blkb	Effective Income Tax Rate Reconciliation Global Intangible Low Tax Income Percent EffectiveIncomeTaxRateReconciliationGlobalIntangibleLowTaxIncomePercent	0.059
CY2021	blkb	Effective Income Tax Rate Reconciliation Deduction Tcjafdii Percent EffectiveIncomeTaxRateReconciliationDeductionTCJAFDIIPercent	0
CY2020	blkb	Effective Income Tax Rate Reconciliation Deduction Tcjafdii Percent EffectiveIncomeTaxRateReconciliationDeductionTCJAFDIIPercent	0
CY2019	blkb	Effective Income Tax Rate Reconciliation Deduction Tcjafdii Percent EffectiveIncomeTaxRateReconciliationDeductionTCJAFDIIPercent	-0.015
CY2021	blkb	Effective Income Tax Rate Reconciliation Dta Adjustments EffectiveIncomeTaxRateReconciliationDTAAdjustments	0
CY2020	blkb	Effective Income Tax Rate Reconciliation Dta Adjustments EffectiveIncomeTaxRateReconciliationDTAAdjustments	-0.033
CY2019	blkb	Effective Income Tax Rate Reconciliation Dta Adjustments EffectiveIncomeTaxRateReconciliationDTAAdjustments	0
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.042
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.041
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.106
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.060
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.017
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.003
CY2021	blkb	Effective Income Tax Rate Reconciliation Tax Credits State And Local EffectiveIncomeTaxRateReconciliationTaxCreditsStateAndLocal	0.326
CY2020	blkb	Effective Income Tax Rate Reconciliation Tax Credits State And Local EffectiveIncomeTaxRateReconciliationTaxCreditsStateAndLocal	0.023
CY2019	blkb	Effective Income Tax Rate Reconciliation Tax Credits State And Local EffectiveIncomeTaxRateReconciliationTaxCreditsStateAndLocal	0.154
CY2021	blkb	Effective Income Tax Rate Reconciliation Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefits	-0.327
CY2020	blkb	Effective Income Tax Rate Reconciliation Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefits	0.013
CY2019	blkb	Effective Income Tax Rate Reconciliation Unrecognized Tax Benefits EffectiveIncomeTaxRateReconciliationUnrecognizedTaxBenefits	0.044
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.362
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.012
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.202
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.545
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.174
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.376
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.046
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.017
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.018
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.196
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.643
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.125
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	21456000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5592000	USD
CY2021Q4	blkb	Deferred Tax Assets Tax Credit Carryforwards State And Foreign DeferredTaxAssetsTaxCreditCarryforwardsStateAndForeign	52283000	USD
CY2020Q4	blkb	Deferred Tax Assets Tax Credit Carryforwards State And Foreign DeferredTaxAssetsTaxCreditCarryforwardsStateAndForeign	42598000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	21432000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	17434000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2399000	USD
CY2021Q4	blkb	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	23795000	USD
CY2020Q4	blkb	Deferred Tax Assets Leasing Arrangements DeferredTaxAssetsLeasingArrangements	13375000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	2524000	USD
CY2021Q4	blkb	Deferred Tax Asset Intangible Assets DeferredTaxAssetIntangibleAssets	1070000	USD
CY2020Q4	blkb	Deferred Tax Asset Intangible Assets DeferredTaxAssetIntangibleAssets	1663000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	1057000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	524000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Bonuses DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses	218000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Bonuses DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBonuses	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	13515000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9111000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	137350000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	92696000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	168392000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	45757000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	31326000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Capitalized Software DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware	28804000	USD
CY2021Q4	blkb	Deferred Tax Liabilities Deferred Expense Sales Commissions DeferredTaxLiabilitiesDeferredExpenseSalesCommissions	18046000	USD
CY2020Q4	blkb	Deferred Tax Liabilities Deferred Expense Sales Commissions DeferredTaxLiabilitiesDeferredExpenseSalesCommissions	20256000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	23582000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	12333000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8483000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8458000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2515000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	398000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	252344000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	116006000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	31974000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	29184000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	146968000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	52494000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	29184000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	31974000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6453000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	29184000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6855000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	6453000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4625000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4346000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3704000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	6000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	414000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1183000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	57000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	614000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	385000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1751000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	491000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	456000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1192000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2021	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1482000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	12000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	612000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3651000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4625000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4346000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3200000	USD
CY2020Q4	us-gaap	Income Tax Examination Penalties And Interest Accrued IncomeTaxExaminationPenaltiesAndInterestAccrued	1100000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	3500423	shares
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	120379000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	87257000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	58633000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	97800000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y3M18D
CY2021	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	-1982000	USD
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1592933	shares
CY2021	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	108400000	USD
CY2021Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	250000000	USD
CY2021Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	250000000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2497000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5290000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5110000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	1625000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Tax OtherComprehensiveIncomeLossBeforeReclassificationsTax	860000	USD
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	6522000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-2497000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-5290000	USD
CY2021	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2019	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2020	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	0.50
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6500000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1900000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8700000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	USD
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	0	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	111428000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	105177000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	1000000000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.60
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P12M
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	378746000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	316914000	USD
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	288000000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	927740000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	913219000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	900423000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	927740000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	913219000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	900423000	USD
CY2019	us-gaap	Restructuring Costs RestructuringCosts	5800000	USD

Files In Submission

Name	View Source	Status
0001280058-22-000010-index-headers.html	Edgar Link	pending
0001280058-22-000010-index.html	Edgar Link	pending
0001280058-22-000010.txt	Edgar Link	pending
0001280058-22-000010-xbrl.zip	Edgar Link	pending
blkb-20211231.htm	Edgar Link	pending
blkb-20211231.xsd	Edgar Link	pending
blkb-20211231_cal.xml	Edgar Link	unprocessable
blkb-20211231_def.xml	Edgar Link	unprocessable
blkb-20211231_g1.jpg	Edgar Link	pending
blkb-20211231_g10.jpg	Edgar Link	pending
blkb-20211231_g11.jpg	Edgar Link	pending
blkb-20211231_g12.jpg	Edgar Link	pending
blkb-20211231_g13.jpg	Edgar Link	pending
blkb-20211231_g14.jpg	Edgar Link	pending
blkb-20211231_g15.jpg	Edgar Link	pending
blkb-20211231_g16.jpg	Edgar Link	pending
blkb-20211231_g17.jpg	Edgar Link	pending
blkb-20211231_g18.jpg	Edgar Link	pending
blkb-20211231_g2.jpg	Edgar Link	pending
blkb-20211231_g3.jpg	Edgar Link	pending
blkb-20211231_g4.jpg	Edgar Link	pending
blkb-20211231_g5.jpg	Edgar Link	pending
blkb-20211231_g6.jpg	Edgar Link	pending
blkb-20211231_g7.jpg	Edgar Link	pending
blkb-20211231_g8.jpg	Edgar Link	pending
blkb-20211231_g9.jpg	Edgar Link	pending
blkb-20211231_htm.xml	Edgar Link	completed
blkb-20211231_lab.xml	Edgar Link	unprocessable
blkb-20211231_pre.xml	Edgar Link	unprocessable
blkb202110-kexx211.htm	Edgar Link	pending
blkb202110-kexx231.htm	Edgar Link	pending
blkb202110-kexx311.htm	Edgar Link	pending
blkb202110-kexx312.htm	Edgar Link	pending
blkb202110-kexx321.htm	Edgar Link	pending
blkb202110-kexx322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$BLKB
BLACKBAUD INC Stock $blkb

2021 Q4 Form 10-K Financial Statement

#000128005822000010 Filed on March 01, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BLKB BLACKBAUD INC Stock $blkb

2021 Q4 Form 10-K Financial Statement

#000128005822000010 Filed on March 01, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BLKB
BLACKBAUD INC Stock $blkb