$MTG
MGIC INVESTMENT CORP Stock $mtg

$mtg Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000087643723000013 Filed on February 22, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$284.0M	$292.3M	$1.173B
YoY Change	-3.62%	-0.63%	-1.09%
Cost Of Revenue	$6.446M		-$254.6M
YoY Change	-133.37%		-494.2%
Gross Profit	$277.5M		$1.427B
YoY Change	-11.6%		27.32%
Gross Profit Margin	97.73%		121.71%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$2.478M	$11.43M	$4.900M
YoY Change	-9.56%	-29.44%	-12.5%
% of Gross Profit	0.89%		0.34%
Operating Expenses	$78.99M	$42.37M	-$5.502M
YoY Change	107.0%	99.1%	-102.0%
Operating Profit	$198.5M		$1.433B
YoY Change	-28.01%		69.47%
Interest Expense	-$9.374M	-$9.381M	-$48.05M
YoY Change	-37.14%	-45.98%	-32.66%
% of Operating Profit	-4.72%		-3.35%
Other Income/Expense, Net
YoY Change
Pretax Income	$195.6M	$240.4M	$1.090B
YoY Change	-10.86%	10.01%	35.95%
Income Tax	$41.06M	$48.99M	$224.7M
% Of Pretax Income	20.99%	20.38%	20.61%
Net Earnings	$154.5M	$191.4M	$865.3M
YoY Change	-11.69%	10.07%	36.28%
Net Earnings / Revenue	54.42%	65.51%	73.79%
Basic Earnings Per Share	$0.53		$2.83
Diluted Earnings Per Share	$0.53	$0.64	$2.79
COMMON SHARES
Basic Shares Outstanding	290.4M shares	297.0M shares	305.8M shares
Diluted Shares Outstanding	294.7M shares		311.2M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$358.2M	$327.4M	$327.4M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$40.58M	$41.42M	$41.42M
YoY Change	-10.19%	-9.2%	-9.2%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$5.579B	$5.425B	$5.425B
YoY Change	-6.26%	-17.89%	-17.89%
Other Assets	$108.5M	$130.3M	$130.3M
YoY Change	748.97%	542.88%	542.88%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$6.352B	$6.214B	$6.214B
YoY Change	-7.2%	-15.17%	-15.17%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$663.2M	$662.8M	$662.8M
YoY Change	-29.09%	-42.2%	-42.2%
Other Long-Term Liabilities	$169.5M	$155.0M	$155.0M
YoY Change	-22.53%	-19.16%	-19.16%
Total Long-Term Liabilities	$832.7M	$817.8M	$817.8M
YoY Change	-27.85%	-38.9%	-38.9%
TOTAL LIABILITIES
Total Short-Term Liabilities
Total Long-Term Liabilities	$832.7M	$817.8M	$817.8M
Total Liabilities	$1.575B	$1.571B	$1.571B
YoY Change	-29.53%	-36.23%	-36.23%
SHAREHOLDERS EQUITY
Retained Earnings	$4.129B	$4.004B
YoY Change	21.45%	23.18%
Common Stock	$2.163B	$2.170B
YoY Change	0.37%	0.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.119B	$1.050B
YoY Change	40.99%	55.53%
Treasury Stock Shares	82.99M shares	77.92M shares
Shareholders Equity	$4.778B	$4.643B	$4.643B
YoY Change
Total Liabilities & Shareholders Equity	$6.352B	$6.214B	$6.214B
YoY Change	-7.2%	-15.17%	-15.17%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$154.5M	$191.4M	$865.3M
YoY Change	-11.69%	10.07%	36.28%
Depreciation, Depletion And Amortization	$2.478M	$11.43M	$4.900M
YoY Change	-9.56%	-29.44%	-12.5%
Cash From Operating Activities	$212.3M	$166.2M	$650.0M
YoY Change	-6.9%	-9.62%	-6.65%
INVESTING ACTIVITIES
Capital Expenditures	$363.0K	$852.0K	$3.254M
YoY Change	-59.12%	-149.33%	-20.92%
Acquisitions
YoY Change
Other Investing Activities	-$64.82M	$30.38M	$413.7M
YoY Change	-118.5%	-87.3%	-364.14%
Cash From Investing Activities	-$65.18M	$29.52M	$410.5M
YoY Change	-118.65%	-87.57%	-355.36%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$385.6M
YoY Change			32.58%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$113.4M	-112.6M	-$1.033B
YoY Change	-71.1%	-62.75%	95.82%
NET CHANGE
Cash From Operating Activities	$212.3M	166.2M	$650.0M
Cash From Investing Activities	-$65.18M	29.52M	$410.5M
Cash From Financing Activities	-$113.4M	-112.6M	-$1.033B
Net Change In Cash	$33.66M	83.16M	$27.96M
YoY Change	-81.8%	-30.15%	237.7%
FREE CASH FLOW
Cash From Operating Activities	$212.3M	$166.2M	$650.0M
Capital Expenditures	$363.0K	$852.0K	$3.254M
Free Cash Flow	$211.9M	$165.4M	$646.8M
YoY Change	-6.69%	-10.92%	-6.57%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000876437
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	6397658000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	15924000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	15838000	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
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CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	371353000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	371353000	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	293433000	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	320336000	shares
CY2022Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	77920000	shares
CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	51017000	shares
CY2022	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2022#AccountingStandardsUpdate202006Member
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CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	1-10816
CY2022	dei	Entity Registrant Name EntityRegistrantName	MGIC Investment Corp
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	WI
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	39-1486475
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	250 E. Kilbourn Avenue
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Milwaukee,
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	WI
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	53202
CY2022	dei	City Area Code CityAreaCode	(414)
CY2022	dei	Local Phone Number LocalPhoneNumber	347-6480
CY2022	dei	Security12b Title Security12bTitle	Common stock, par value $1 per share
CY2022	dei	Trading Symbol TradingSymbol	MTG
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
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CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334330000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	339953000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	311229000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	351308000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	359293000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	359293000	shares
CY2022	us-gaap	Net Income Loss NetIncomeLoss	865349000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	634983000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	446093000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-558534000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-122099000	usd
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	133616000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	42674000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-24975000	usd
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-10497000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-97124000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	144113000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	264141000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	537859000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	590206000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	4642740000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	4861382000	usd
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	4698986000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	865349000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	634983000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	446093000	usd
CY2022	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	54252000	usd
CY2021	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	66014000	usd
CY2020	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	57812000	usd
CY2022	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	4367000	usd
CY2021	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-5188000	usd
CY2020	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-27475000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	24771000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	17109000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	13803000	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-40199000	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-36914000	usd
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-26736000	usd
CY2022	mtg	Net Gains Losses On Investments And Other Financial Instruments NetGainsLossesOnInvestmentsAndOtherFinancialInstruments	-7463000	usd
CY2021	mtg	Net Gains Losses On Investments And Other Financial Instruments NetGainsLossesOnInvestmentsAndOtherFinancialInstruments	5861000	usd
CY2020	mtg	Net Gains Losses On Investments And Other Financial Instruments NetGainsLossesOnInvestmentsAndOtherFinancialInstruments	12576000	usd
CY2022	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	3276000	usd
CY2021	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	1905000	usd
CY2020	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	292000	usd
CY2022	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-38665000	usd
CY2021	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-28137000	usd
CY2020	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	73401000	usd
CY2022	mtg	Increase Decrease In Reinsurance Recoverable On Paid Losses IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses	18194000	usd
CY2021	mtg	Increase Decrease In Reinsurance Recoverable On Paid Losses IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses	-35606000	usd
CY2020	mtg	Increase Decrease In Reinsurance Recoverable On Paid Losses IncreaseDecreaseInReinsuranceRecoverableOnPaidLosses	852000	usd
CY2022	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	1460000	usd
CY2021	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	496000	usd
CY2020	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	457000	usd
CY2022	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	-2609000	usd
CY2021	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	110000	usd
CY2020	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	3030000	usd
CY2022	mtg	Increase Decrease In Profit Commission Receivable IncreaseDecreaseInProfitCommissionReceivable	-4724000	usd
CY2021	mtg	Increase Decrease In Profit Commission Receivable IncreaseDecreaseInProfitCommissionReceivable	19245000	usd
CY2020	mtg	Increase Decrease In Profit Commission Receivable IncreaseDecreaseInProfitCommissionReceivable	-4586000	usd
CY2022	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	-325534000	usd
CY2021	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	2985000	usd
CY2020	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	325203000	usd
CY2022	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-46401000	usd
CY2021	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-45409000	usd
CY2020	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	-93203000	usd
CY2022	us-gaap	Increase Decrease In Other Insurance Liabilities IncreaseDecreaseInOtherInsuranceLiabilities	-11800000	usd
CY2021	us-gaap	Increase Decrease In Other Insurance Liabilities IncreaseDecreaseInOtherInsuranceLiabilities	7200000	usd
CY2020	us-gaap	Increase Decrease In Other Insurance Liabilities IncreaseDecreaseInOtherInsuranceLiabilities	-500000	usd
CY2022	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-8549000	usd
CY2021	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	5429000	usd
CY2020	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	6271000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	4827000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-990000	usd
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-6937000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	650012000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	696317000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	732309000	usd
CY2022	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	674406000	usd
CY2021	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1531129000	usd
CY2020	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	2636972000	usd
CY2022	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	399661000	usd
CY2021	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	473904000	usd
CY2020	us-gaap	Proceeds From Sale Maturity And Collections Of Investments ProceedsFromSaleMaturityAndCollectionsOfInvestments	836851000	usd
CY2022	mtg	Proceeds From Sale Maturity And Collection Of Securities ProceedsFromSaleMaturityAndCollectionOfSecurities	688484000	usd
CY2021	mtg	Proceeds From Sale Maturity And Collection Of Securities ProceedsFromSaleMaturityAndCollectionOfSecurities	900591000	usd
CY2020	mtg	Proceeds From Sale Maturity And Collection Of Securities ProceedsFromSaleMaturityAndCollectionOfSecurities	1030926000	usd
CY2022	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3254000	usd
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	4115000	usd
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3311000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	410485000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-160749000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-772506000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	640250000	usd
CY2022	mtg	Purchase Of Senior Notes PurchaseOfSeniorNotes	0	usd
CY2021	mtg	Purchase Of Senior Notes PurchaseOfSeniorNotes	0	usd
CY2020	mtg	Purchase Of Senior Notes PurchaseOfSeniorNotes	179735000	usd
CY2022	mtg	Payment Of Original Issue Discount Senior Notes PaymentOfOriginalIssueDiscountSeniorNotes	0	usd
CY2021	mtg	Payment Of Original Issue Discount Senior Notes PaymentOfOriginalIssueDiscountSeniorNotes	0	usd
CY2020	mtg	Payment Of Original Issue Discount Senior Notes PaymentOfOriginalIssueDiscountSeniorNotes	2969000	usd
CY2022	us-gaap	Early Repayment Of Subordinated Debt EarlyRepaymentOfSubordinatedDebt	89118000	usd
CY2021	us-gaap	Early Repayment Of Subordinated Debt EarlyRepaymentOfSubordinatedDebt	98610000	usd
CY2020	us-gaap	Early Repayment Of Subordinated Debt EarlyRepaymentOfSubordinatedDebt	36392000	usd
CY2022	mtg	Payment Of Original Issue Discount Convertible Junior Subordinated Debentures PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures	0	usd
CY2021	mtg	Payment Of Original Issue Discount Convertible Junior Subordinated Debentures PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures	0	usd
CY2020	mtg	Payment Of Original Issue Discount Convertible Junior Subordinated Debentures PaymentOfOriginalIssueDiscountConvertibleJuniorSubordinatedDebentures	15049000	usd
CY2022	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	242296000	usd
CY2021	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	usd
CY2020	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	usd
CY2022	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	155000000	usd
CY2021	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	usd
CY2020	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	0	usd
CY2022	mtg	Gain Loss On Debt Extinghuishment Cash Portion GainLossOnDebtExtinghuishmentCashPortion	39514000	usd
CY2021	mtg	Gain Loss On Debt Extinghuishment Cash Portion GainLossOnDebtExtinghuishmentCashPortion	36914000	usd
CY2020	mtg	Gain Loss On Debt Extinghuishment Cash Portion GainLossOnDebtExtinghuishmentCashPortion	25266000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	385573000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	290818000	usd
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	119997000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	110947000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	94219000	usd
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	82061000	usd
CY2022	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2020000	usd
CY2022	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	10094000	usd
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6729000	usd
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	8940000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1032542000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-527290000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	167821000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	27955000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	8278000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	127624000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	304958000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	296680000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	169056000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	332913000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	304958000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	296680000	usd
CY2022	us-gaap	Nature Of Operations NatureOfOperations	<div style="margin-bottom:1pt;text-align:justify"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:225.00pt"><tr><td style="width:1.0pt"/><td style="width:40.00pt"/><td style="width:1.0pt"/><td style="width:1.0pt"/><td style="width:4.00pt"/><td style="width:1.0pt"/><td style="width:1.0pt"/><td style="width:175.00pt"/><td style="width:1.0pt"/></tr><tr style="height:15pt"><td colspan="3" style="background-color:#003b5c;padding:2px 1pt;text-align:left;vertical-align:middle"><span style="color:#ffffff;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">NOTE 1</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:middle"><div style="text-align:justify"><span style="color:#003b5c;font-family:'Roboto',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Nature of Business</span></div></td></tr></table></div><div style="text-align:justify"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:9pt;font-weight:400;line-height:120%">MGIC Investment Corporation is a holding company which, through Mortgage Guaranty Insurance Corporation ("MGIC"), is principally engaged in the mortgage insurance business. We provide mortgage insurance to lenders throughout the United States and to government sponsored entities to protect against loss from defaults on low down payment residential mortgage loans. Primary mortgage insurance provides mortgage default protection on individual loans and covers a percentage of the unpaid loan principal, delinquent interest and certain expenses associated with the default and subsequent foreclosure or sale approved by us, of the underlying property. MGIC Assurance Corporation ("MAC") and MGIC Indemnity Corporation ("MIC"), insurance subsidiaries of MGIC, provide insurance for certain mortgages under Fannie Mae and Freddie Mac (the "GSEs") credit risk transfer programs.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Through certain non-insurance subsidiaries, we also provide certain services for the mortgage finance industry, such as contract underwriting. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:9pt;font-weight:400;line-height:120%">At December 31, 2022, our direct primary insurance in force ("IIF") was $295.3 billion, which represents the principal balance in our records of all mortgage loans that we insure, and our direct primary risk in force ("RIF") was $76.5 billion, which represents the IIF multiplied by the insurance coverage percentage. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:9pt;font-weight:400;line-height:120%">The substantial majority of our NIW is for loans purchased by the GSEs. The current private mortgage insurer eligibility requirements ("PMIERs") of the GSEs include financial requirements, as well as business, quality control and certain transactional approval requirements. The financial requirements of the PMIERs require a mortgage insurer’s "Available Assets" (generally only the most liquid assets of an insurer) to equal or exceed its "Minimum Required Assets" (which are based on an insurer's book of risk in force, calculated from tables of factors with several risk dimensions). Based on our application of the PMIERs, as of December 31, 2022, MGIC’s Available Assets are in excess of its Minimum Required Assets; and MGIC is in compliance with the PMIERs and eligible to insure loans purchased by the GSEs.</span></div>The COVID-19 pandemic materially impacted our 2020 financial results as we reserved for losses associated with the increased delinquency inventory. Through December 31, 2022 the vast majority of those delinquency notices have cured resulting in favorable loss reserve development. We have addressed the impacts of COVID-19 throughout this document.
CY2022Q4	mtg	Direct Domestic Primary Insurance In Force DirectDomesticPrimaryInsuranceInForce	295300000000	usd
CY2022Q4	mtg	Direct Domestic Primary Risk In Force DirectDomesticPrimaryRiskInForce	76500000000	usd
CY2022Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	57100000	usd
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	55400000	usd
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	51200000	usd
CY2022	us-gaap	Depreciation Depreciation	4900000	usd
CY2021	us-gaap	Depreciation Depreciation	5600000	usd
CY2020	us-gaap	Depreciation Depreciation	6300000	usd
CY2022	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	0	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	865349000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	634983000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	446093000	usd
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	305847000	shares
CY2022	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	1
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334330000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	339953000	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.83
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.90
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
CY2022	us-gaap	Net Income Loss NetIncomeLoss	865349000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	634983000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	446093000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	868577000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	649326000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	463097000	usd
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	305847000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	334330000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	339953000	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	311229000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	351308000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	359293000	shares
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.79
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.85
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2022Q4	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	11800000	usd
CY2021Q4	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	13400000	usd
CY2022Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	128400000	usd
CY2022Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	128400000	usd
CY2021Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	189800000	usd
CY2021Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	189800000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	452188000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	445210000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	1358606000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	1288152000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	1890875000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	1713608000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1279209000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1076984000	usd
CY2022Q4	mtg	Available For Sale Securities Debt Maturities With Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateAmortizedCost	4980878000	usd
CY2022Q4	mtg	Available For Sale Securities Debt Maturities With Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithSingleMaturityDateFairValue	4523954000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	7152000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	8980000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	21272000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	15477000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1942000	usd
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	8809000	usd
CY2022	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease	0	usd
CY2021	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease	49000	usd
CY2020	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Period Increase Decrease DebtSecuritiesAvailableForSaleAllowanceForCreditLossPeriodIncreaseDecrease	-49000	usd
CY2022	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	-1415000	usd
CY2021	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	0	usd
CY2020	us-gaap	Other Than Temporary Impairment Loss Debt Securities Portion Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesPortionRecognizedInEarnings	-331000	usd
CY2022	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-7000	usd
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	4000	usd
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	1344000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-2013000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-463000	usd
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	552000	usd
CY2022	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	4269000	usd
CY2021	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-721000	usd
CY2020	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-1176000	usd
CY2022	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	2000	usd
CY2021	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-33000	usd
CY2020	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-231000	usd
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	26000	usd
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-13000	usd
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	4000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-7463000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	5861000	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	12576000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	397553000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	471783000	usd
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	803401000	usd
CY2022	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	97000	usd
CY2021	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	2621000	usd
CY2020	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	25693000	usd
CY2021Q4	us-gaap	Federal Home Loan Bank Advances General Debt Obligations Disclosures Collateral Pledged1 FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1	167200000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	3411256000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	298637000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1592040000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	224403000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	5003296000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	523040000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1970111000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	26842000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	85830000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	1625000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	2055941000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss	28467000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1226	security
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	610	security
CY2022	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	171843000	usd
CY2021	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	160598000	usd
CY2020	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	159608000	usd
CY2022	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	4367000	usd
CY2021	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	4160000	usd
CY2020	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	5212000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	167476000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	156438000	usd
CY2020	us-gaap	Net Investment Income NetInvestmentIncome	154396000	usd
CY2022Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	328756000	usd
CY2022Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	5752594000	usd
CY2021Q4	us-gaap	Other Assets Fair Value Disclosure OtherAssetsFairValueDisclosure	254230000	usd
CY2021Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	6857879000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	662800000	usd
CY2021Q4	us-gaap	Long Term Debt LongTermDebt	1146700000	usd
CY2022	us-gaap	Interest Paid InterestPaid	53700000	usd
CY2021	us-gaap	Interest Paid InterestPaid	71700000	usd
CY2020	us-gaap	Interest Paid InterestPaid	54300000	usd
CY2022	mtg	Minimum Number Of Payments Past Due To Be In Default MinimumNumberOfPaymentsPastDueToBeInDefault	2	payment
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-404100000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-60000000	usd
CY2022	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="text-align:justify"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:9pt;font-weight:400;line-height:120%">Table 8.1 provides a reconciliation of beginning and ending loss reserves as of and for the past three years:</span></div><div style="margin-top:5pt;text-align:justify"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.861%"><tr><td style="width:1.0%"/><td style="width:4.463%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:44.518%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.495%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:14.477%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.495%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:14.477%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.495%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:14.480%"/><td style="width:0.1%"/></tr><tr><td colspan="24" style="padding:2px 1pt;text-align:left;vertical-align:middle"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">Development of loss reserves </span></td></tr><tr><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:2px 1pt;text-align:left;vertical-align:middle"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:7pt;font-weight:700;line-height:100%">Table</span></td><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:2px 1pt;text-align:left;vertical-align:middle"><div><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:7pt;font-weight:700;line-height:100%">8.1</span></div></td><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:0 1pt"/><td colspan="3" style="border-top:2pt solid #b9d9eb;padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:middle"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-style:italic;font-weight:400;line-height:100%">(In thousands)</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2022</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">2021</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">2020</span></td></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Reserve at beginning of year</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">$</span></td><td style="border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">883,522</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">$</span></td><td style="border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">880,537 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">$</span></td><td style="border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">555,334 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;border-top:0.25pt solid #d0d0ce;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Less reinsurance recoverable</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">66,905</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">95,042 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">21,641 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Net reserve at beginning of year</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">816,617</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">785,495 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">533,693 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr style="height:6pt"><td colspan="6" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Losses incurred:</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Losses and LAE incurred in respect of delinquent notices received in:</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">149,565</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">124,592 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">345,170 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;border-top:0.25pt solid #d0d0ce;padding:2px 1pt;text-align:left;vertical-align:top"><div style="padding-left:11.25pt"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Prior years </span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:5.2pt;font-weight:400;line-height:100%;position:relative;top:-2.8pt;vertical-align:baseline">(1)</span></div></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(404,130)</span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">(60,015)</span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">19,604 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Total losses incurred</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(254,565)</span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">64,577 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">364,774 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr style="height:3pt"><td colspan="6" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Losses paid:</span></td><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Losses and LAE paid in respect of delinquent notices received in:</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">362</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">664 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">3,069 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Prior years</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">49,626</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">68,769 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">109,923 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;border-top:0.25pt solid #d0d0ce;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:11.25pt"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Reinsurance terminations </span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:5.2pt;font-weight:400;line-height:100%;position:relative;top:-2.8pt;vertical-align:baseline">(2)</span></div></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(17,684)</span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">(35,978)</span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">(20)</span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Total losses paid</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">32,304</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">33,455 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">112,972 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.25pt solid #d0d0ce;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Net reserve at end of year</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">529,748</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">816,617 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">785,495 </span></td><td style="border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:0.5pt solid #000000;border-top:0.25pt solid #d0d0ce;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">Plus reinsurance recoverables</span></td><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">28,240</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">66,905 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-top:0.25pt solid #d0d0ce;padding:0 1pt"/><td colspan="2" style="border-top:0.25pt solid #d0d0ce;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">95,042 </span></td><td style="border-top:0.25pt solid #d0d0ce;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="6" style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 14.5pt;text-align:left;text-indent:-13.5pt;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:120%">Reserve at end of year</span></td><td colspan="3" style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:0 1pt"/><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">$</span></td><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:700;line-height:100%">557,988</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:0 1pt"/><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">$</span></td><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">883,522 </span></td><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:0 1pt"/><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">$</span></td><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:100%">880,537 </span></td><td style="border-bottom:1pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div><div style="margin-top:3pt;padding-left:18pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:5.2pt;font-weight:400;line-height:120%;position:relative;top:-2.8pt;vertical-align:baseline">(1)</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:11.52pt">A positive number for prior year loss development indicates a deficiency of prior year reserves. A negative number for prior year loss development indicates a redundancy of prior year loss reserves. See the following table for more information about prior year loss development.</span></div><div style="margin-top:3pt;padding-left:18pt;text-align:justify;text-indent:-18pt"><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:5.2pt;font-weight:400;line-height:120%;position:relative;top:-2.8pt;vertical-align:baseline">(2)</span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:120%;padding-left:11.52pt">In a reinsurance termination, amounts for any incurred but unpaid losses are due to us from the reinsurers. As a result, the amount due from the reinsurers is reclassified from reinsurance recoverable on loss reserves to reinsurance recoverable on paid losses, resulting in no impact to losses incurred. (See </span><span style="color:#0000ff;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:120%"><a href="#i7d433c74f4ca4736b259e948b2b543f1_163" style="color:#0000ff;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:120%;text-decoration:none">Note 9 - "Reinsurance"</a></span><span style="color:#000000;font-family:'Roboto',sans-serif;font-size:8pt;font-weight:400;line-height:120%">)</span></div>
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	883522000	usd
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	880537000	usd
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	555334000	usd
CY2021Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	66905000	usd
CY2020Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	95042000	usd
CY2019Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	21641000	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	816617000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	785495000	usd
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	533693000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	149565000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	124592000	usd
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	345170000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-404130000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-60015000	usd
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	19604000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	-254565000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	64577000	usd
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	364774000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	362000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	664000	usd
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	3069000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	49626000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	68769000	usd
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	109923000	usd
CY2022	mtg	Reinsurance Terminations ReinsuranceTerminations	17684000	usd
CY2021	mtg	Reinsurance Terminations ReinsuranceTerminations	35978000	usd
CY2020	mtg	Reinsurance Terminations ReinsuranceTerminations	20000	usd
CY2022	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	32304000	usd
CY2021	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	33455000	usd
CY2020	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	112972000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	529748000	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	816617000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	785495000	usd
CY2022Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	28240000	usd
CY2021Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	66905000	usd
CY2020Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	95042000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	557988000	usd
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	883522000	usd
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	880537000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-404130000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-60015000	usd
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	19604000	usd
CY2021Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	33290	loan
CY2020Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	57710	loan
CY2019Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	30028	loan
CY2022	mtg	Primary Default Inventory New Notices PrimaryDefaultInventoryNewNotices	42988	loan
CY2021	mtg	Primary Default Inventory New Notices PrimaryDefaultInventoryNewNotices	42432	loan
CY2022	mtg	Primary Default Inventory Other Items Removed PrimaryDefaultInventoryOtherItemsRemoved	289	loan
CY2020	mtg	Primary Default Inventory New Notices PrimaryDefaultInventoryNewNotices	106099	loan
CY2022	mtg	Primary Default Inventory Cures PrimaryDefaultInventoryCures	48262	loan
CY2021	mtg	Primary Default Inventory Cures PrimaryDefaultInventoryCures	64896	loan
CY2020	mtg	Primary Default Inventory Cures PrimaryDefaultInventoryCures	76107	loan
CY2022	mtg	Primary Default Inventory Paids PrimaryDefaultInventoryPaids	1305	loan
CY2021	mtg	Primary Default Inventory Paids PrimaryDefaultInventoryPaids	1223	loan
CY2020	mtg	Primary Default Inventory Paids PrimaryDefaultInventoryPaids	2245	loan
CY2022	mtg	Primary Default Inventory Rescissions And Denials PrimaryDefaultInventoryRescissionsAndDenials	35	loan
CY2021	mtg	Primary Default Inventory Rescissions And Denials PrimaryDefaultInventoryRescissionsAndDenials	38	loan
CY2020	mtg	Primary Default Inventory Rescissions And Denials PrimaryDefaultInventoryRescissionsAndDenials	65	loan
CY2022	mtg	Primary Default Inventory Other Items Removed PrimaryDefaultInventoryOtherItemsRemoved	289	loan
CY2021	mtg	Primary Default Inventory Other Items Removed PrimaryDefaultInventoryOtherItemsRemoved	695	loan
CY2020	mtg	Primary Default Inventory Other Items Removed PrimaryDefaultInventoryOtherItemsRemoved	0	loan
CY2022Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	26387	loan
CY2021Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	33290	loan
CY2020Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	57710	loan
CY2022Q4	mtg	Primary Default Inventory Three Months Or Less PrimaryDefaultInventoryThreeMonthsOrLess	8820	loan
CY2021Q4	mtg	Primary Default Inventory Three Months Or Less PrimaryDefaultInventoryThreeMonthsOrLess	7586	loan
CY2020Q4	mtg	Primary Default Inventory Three Months Or Less PrimaryDefaultInventoryThreeMonthsOrLess	11542	loan
CY2022Q4	mtg	Primary Default Inventory Four To Eleven Months PrimaryDefaultInventoryFourToElevenMonths	8217	loan
CY2021Q4	mtg	Primary Default Inventory Four To Eleven Months PrimaryDefaultInventoryFourToElevenMonths	7990	loan
CY2020Q4	mtg	Primary Default Inventory Four To Eleven Months PrimaryDefaultInventoryFourToElevenMonths	34620	loan
CY2022Q4	mtg	Primary Default Inventory Twelve Months Or More PrimaryDefaultInventoryTwelveMonthsOrMore	9350	loan
CY2021Q4	mtg	Primary Default Inventory Twelve Months Or More PrimaryDefaultInventoryTwelveMonthsOrMore	17714	loan
CY2020Q4	mtg	Primary Default Inventory Twelve Months Or More PrimaryDefaultInventoryTwelveMonthsOrMore	11548	loan
CY2022Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	26387	loan
CY2021Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	33290	loan
CY2020Q4	mtg	Primary Default Inventory PrimaryDefaultInventory	57710	loan
CY2022Q4	mtg	Primary Default Inventory Three Months Or Less Percentage PrimaryDefaultInventoryThreeMonthsOrLessPercentage	0.33
CY2021Q4	mtg	Primary Default Inventory Three Months Or Less Percentage PrimaryDefaultInventoryThreeMonthsOrLessPercentage	0.23
CY2020Q4	mtg	Primary Default Inventory Three Months Or Less Percentage PrimaryDefaultInventoryThreeMonthsOrLessPercentage	0.20
CY2022Q4	mtg	Primary Default Inventory Four To Eleven Months Percentage PrimaryDefaultInventoryFourToElevenMonthsPercentage	0.31
CY2021Q4	mtg	Primary Default Inventory Four To Eleven Months Percentage PrimaryDefaultInventoryFourToElevenMonthsPercentage	0.24
CY2020Q4	mtg	Primary Default Inventory Four To Eleven Months Percentage PrimaryDefaultInventoryFourToElevenMonthsPercentage	0.60
CY2022Q4	mtg	Primary Default Inventory Twelve Months Or More Percentage PrimaryDefaultInventoryTwelveMonthsOrMorePercentage	0.36
CY2021Q4	mtg	Primary Default Inventory Twelve Months Or More Percentage PrimaryDefaultInventoryTwelveMonthsOrMorePercentage	0.53
CY2020Q4	mtg	Primary Default Inventory Twelve Months Or More Percentage PrimaryDefaultInventoryTwelveMonthsOrMorePercentage	0.20
CY2022Q4	mtg	Primary Default Inventory Percentage PrimaryDefaultInventoryPercentage	1
CY2021Q4	mtg	Primary Default Inventory Percentage PrimaryDefaultInventoryPercentage	1
CY2020Q4	mtg	Primary Default Inventory Percentage PrimaryDefaultInventoryPercentage	1
CY2022Q4	mtg	Primary Default Inventory Claims Received Inventory PrimaryDefaultInventoryClaimsReceivedInventory	267	loan
CY2021Q4	mtg	Primary Default Inventory Claims Received Inventory PrimaryDefaultInventoryClaimsReceivedInventory	211	loan
CY2020Q4	mtg	Primary Default Inventory Claims Received Inventory PrimaryDefaultInventoryClaimsReceivedInventory	159	loan
CY2022Q4	mtg	Primary Default Inventory Twelve Months Or More Percent Of Primary Default Inventory In Default For Twelve Months Or More In Default For More Than Thirty Six Consecutive Months PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths	0.36
CY2021Q4	mtg	Primary Default Inventory Twelve Months Or More Percent Of Primary Default Inventory In Default For Twelve Months Or More In Default For More Than Thirty Six Consecutive Months PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths	0.20
CY2020Q4	mtg	Primary Default Inventory Twelve Months Or More Percent Of Primary Default Inventory In Default For Twelve Months Or More In Default For More Than Thirty Six Consecutive Months PrimaryDefaultInventoryTwelveMonthsOrMorePercentOfPrimaryDefaultInventoryInDefaultForTwelveMonthsOrMoreInDefaultForMoreThanThirtySixConsecutiveMonths	0.31
CY2022Q4	mtg	Pool Insurance Notice Inventory PoolInsuranceNoticeInventory	391	loan
CY2021Q4	mtg	Pool Insurance Notice Inventory PoolInsuranceNoticeInventory	498	loan
CY2020Q4	mtg	Pool Insurance Notice Inventory PoolInsuranceNoticeInventory	680	loan
CY2022Q4	mtg	Premium Refund Liability Expected Claim Payments PremiumRefundLiabilityExpectedClaimPayments	25500000	usd
CY2021Q4	mtg	Premium Refund Liability Expected Claim Payments PremiumRefundLiabilityExpectedClaimPayments	37300000	usd
CY2022	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1154728000	usd
CY2021	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1167592000	usd
CY2020	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1199824000	usd
CY2022	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	8778000	usd
CY2021	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	9858000	usd
CY2020	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	10848000	usd
CY2022	us-gaap	Ceded Premiums Earned CededPremiumsEarned	156373000	usd
CY2021	us-gaap	Ceded Premiums Earned CededPremiumsEarned	163031000	usd
CY2020	us-gaap	Ceded Premiums Earned CededPremiumsEarned	188729000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	1007133000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	1014419000	usd
CY2020	us-gaap	Premiums Earned Net PremiumsEarnedNet	1021943000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	-274072000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	74496000	usd
CY2020	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	442194000	usd
CY2022	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	-330000	usd
CY2021	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	-57000	usd
CY2020	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	555000	usd
CY2022	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	-254565000	usd
CY2021	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	64577000	usd
CY2020	us-gaap	Incurred Claims Property Casualty And Liability IncurredClaimsPropertyCasualtyAndLiability	364774000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-707005000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	-154555000	usd
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent	169135000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-148471000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-32456000	usd
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	35519000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-558534000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-122099000	usd
CY2020	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	133616000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	54017000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-31613000	usd
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Before Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent	-13288000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	11343000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-6638000	usd
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-2791000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	42674000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-24975000	usd
CY2020	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-10497000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-761022000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-122942000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	182423000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-159814000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-25818000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	38310000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-601208000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-97124000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	144113000	usd
CY2022	mtg	Minimum Percentages Of Gain Loss Consider For Amortization MinimumPercentagesOfGainLossConsiderForAmortization	0.10
CY2022Q4	mtg	Defined Benefit Plan Minimum Value Of Outstanding Noncallable Bonds Used In Hypothetical Cash Flow Bond Matching Exercise DefinedBenefitPlanMinimumValueOfOutstandingNoncallableBondsUsedInHypotheticalCashFlowBondMatchingExercise	50000000	usd
CY2022	mtg	Defined Benefit Plan Future Earnings Period Used In Determining Expected Average Rate Of Earnings DefinedBenefitPlanFutureEarningsPeriodUsedInDeterminingExpectedAverageRateOfEarnings	P20Y
CY2022	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.04
CY2022	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7600000	usd
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8000000	usd
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8000000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	144819000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	32331000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	20050000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	71743000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	124769000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	39412000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	9719000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	0	usd
CY2022Q4	mtg	Deferred Tax Assets Liabilities Net Other DeferredTaxAssetsLiabilitiesNetOther	-4891000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	16209000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve	19116000	usd
CY2022Q4	mtg	Deferred Tax Liabilities Tax Deferred Expense Compensationand Benefits Employee Benefits DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsEmployeeBenefits	9444000	usd
CY2021Q4	mtg	Deferred Tax Liabilities Tax Deferred Expense Compensationand Benefits Employee Benefits DeferredTaxLiabilitiesTaxDeferredExpenseCompensationandBenefitsEmployeeBenefits	21360000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	1785000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	4034000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other Comprehensive Loss DeferredTaxAssetsOtherComprehensiveLoss	108588000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Other Comprehensive Income DeferredTaxLiabilitiesOtherComprehensiveIncome	39883000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	4003000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	4551000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6806000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6118000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2100000	usd
CY2021Q4	mtg	Deferred Tax Assets Liabilities Net Other DeferredTaxAssetsLiabilitiesNetOther	-2886000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	124769000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	39412000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	228259000	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	161055000	usd
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	85574000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5235000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4392000	usd
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	28244000	usd
CY2022	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	1661000	usd
CY2021	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	1347000	usd
CY2020	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	-648000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	224685000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	166794000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	113170000	usd
CY2022	us-gaap	Income Taxes Paid IncomeTaxesPaid	236500000	usd
CY2021	us-gaap	Income Taxes Paid IncomeTaxesPaid	155300000	usd
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	79600000	usd
CY2022Q4	mtg	Tax And Loss Bonds Held TaxAndLossBondsHeld	661700000	usd
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.005
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.006
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	0.009
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.004
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.001
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.206
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.208
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.202
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	usd
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	27800000	shares
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	13.89
CY2022Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	114000000	usd
CY2021	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	19000000	shares
CY2021	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	15.30
CY2020	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	9600000	shares
CY2020	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	12.47
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.08
	us-gaap	Dividends Cash DividendsCash	51000000	usd
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.10
	us-gaap	Dividends Cash DividendsCash	60700000	usd
CY2022	us-gaap	Statutory Accounting Practices Statutory Net Income Amount StatutoryAccountingPracticesStatutoryNetIncomeAmount	440944000	usd
CY2021	us-gaap	Statutory Accounting Practices Statutory Net Income Amount StatutoryAccountingPracticesStatutoryNetIncomeAmount	295811000	usd
CY2020	us-gaap	Statutory Accounting Practices Statutory Net Income Amount StatutoryAccountingPracticesStatutoryNetIncomeAmount	65201000	usd
CY2022Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Balance StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance	924977000	usd
CY2021Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Balance StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance	1220714000	usd
CY2020Q4	us-gaap	Statutory Accounting Practices Statutory Capital And Surplus Balance StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance	1339509000	usd
CY2022Q4	mtg	Statutory Accounting Practices Contingency Reserve StatutoryAccountingPracticesContingencyReserve	4669724000	usd
CY2021Q4	mtg	Statutory Accounting Practices Contingency Reserve StatutoryAccountingPracticesContingencyReserve	4126604000	usd
CY2020Q4	mtg	Statutory Accounting Practices Contingency Reserve StatutoryAccountingPracticesContingencyReserve	3585864000	usd
CY2022Q4	mtg	Number Of Jurisdictions With Risk To Capital Requirements NumberOfJurisdictionsWithRiskToCapitalRequirements	16	jurisdiction
CY2022	us-gaap	Description Of Regulatory Capital Requirements Under Insurance Regulations DescriptionOfRegulatoryCapitalRequirementsUnderInsuranceRegulations	25 to 1
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	24700000	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	17100000	usd
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13800000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1800000	usd
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1700000	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3600000	shares
CY2022Q4	us-gaap	Lessee Operating Lease Term Of Contract LesseeOperatingLeaseTermOfContract	P4Y
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	908000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	831000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	667000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	152000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	0	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	2558000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	1200000	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	1300000	usd
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	1900000	usd
CY2022	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2022	dei	Auditor Location AuditorLocation	Milwaukee, Wisconsin
CY2022Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Cost SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost	5942709000	usd
CY2022Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Fair Value SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue	5423838000	usd
CY2022Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Carrying Amount SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount	5423838000	usd
CY2022	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1154728000	usd
CY2022	us-gaap	Ceded Premiums Earned CededPremiumsEarned	156373000	usd
CY2022	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	8778000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	1007133000	usd
CY2022	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.009
CY2021	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1167592000	usd
CY2021	us-gaap	Ceded Premiums Earned CededPremiumsEarned	163031000	usd
CY2021	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	9858000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	1014419000	usd
CY2021	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.010
CY2020	us-gaap	Direct Premiums Earned DirectPremiumsEarned	1199824000	usd
CY2020	us-gaap	Ceded Premiums Earned CededPremiumsEarned	188729000	usd
CY2020	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	10848000	usd
CY2020	us-gaap	Premiums Earned Net PremiumsEarnedNet	1021943000	usd
CY2020	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.011

Files In Submission

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$MTG
MGIC INVESTMENT CORP Stock $mtg

2023 Q1 Form 10-K Financial Statement

#000087643723000013 Filed on February 22, 2023

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$MTG MGIC INVESTMENT CORP Stock $mtg

2023 Q1 Form 10-K Financial Statement

#000087643723000013 Filed on February 22, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTG
MGIC INVESTMENT CORP Stock $mtg