$MCY
MERCURY GENERAL CORP Stock $mcy

$mcy Overview Financials Valuation SEC Filings Company Website

2022 Q3 Form 10-Q Financial Statement

#000006499622000020 Filed on August 02, 2022

Income Statement

Concept	2022 Q3	2022 Q2	2021 Q4
Revenue	$900.3M	$785.6M	$1.049B
YoY Change	-3.42%	-22.89%	-2.08%
Cost Of Revenue	$2.500M	$2.800M
YoY Change	-16.67%	-12.5%
Gross Profit	$897.8M	$782.8M
YoY Change	-3.38%	-22.92%
Gross Profit Margin	99.72%	99.64%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$168.9M	$156.5M	$27.21M
YoY Change	10.32%	3.64%	21.46%
% of Gross Profit	18.81%	19.99%
Operating Expenses	$1.025B	$1.053B	$1.010B
YoY Change	10.05%	19.74%	17.43%
Operating Profit	-$127.1M	-$269.9M
YoY Change	5913.72%	-297.8%
Interest Expense	$4.300M	$4.300M	-$4.268M
YoY Change	0.0%	2.38%	-0.74%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	-$128.9M	-$271.3M	$34.87M
YoY Change	3691.18%	-300.37%	-83.17%
Income Tax	-$30.60M	-$60.66M	$4.393M
% Of Pretax Income			12.6%
Net Earnings	-$98.30M	-$210.7M	$30.47M
YoY Change	-7661.54%	-292.95%	-81.72%
Net Earnings / Revenue	-10.92%	-26.82%	2.9%
Basic Earnings Per Share	-$1.78	-$3.80
Diluted Earnings Per Share	-$1.78	-$3.80	$550.3K
COMMON SHARES
Basic Shares Outstanding	55.37M shares	55.37M shares	55.37M shares
Diluted Shares Outstanding	55.37M shares	55.37M shares

Balance Sheet

Concept	2022 Q3	2022 Q2	2021 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$335.9M	$290.0M	$335.6M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$7.871M	$7.358M	$7.600M
YoY Change	8.45%	-28.63%	-28.97%
LONG-TERM ASSETS
Property, Plant & Equipment	$189.8M	$189.6M	$191.3M
YoY Change	2.05%	4.19%	6.94%
Goodwill	$42.80M	$42.80M	$42.80M
YoY Change	0.0%	0.0%	0.0%
Intangibles	$9.455M	$9.722M	$10.26M
YoY Change	-10.14%	-9.89%	-9.42%
Long-Term Investments	$4.683B	$4.834B	$5.143B
YoY Change	-7.72%	-4.11%	8.74%
Other Assets	$65.71M	$39.07M
YoY Change	530.57%	6171.43%
Total Long-Term Assets	$6.447B	$6.492B	$6.765B
YoY Change	-4.45%	-2.91%	7.08%
TOTAL ASSETS
Total Short-Term Assets	$7.871M	$7.358M	$7.600M
Total Long-Term Assets	$6.447B	$6.492B	$6.765B
Total Assets	$6.455B	$6.500B	$6.772B
YoY Change	-4.44%	-2.95%	7.02%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$155.4M	$165.9M	$169.1M
YoY Change	-14.66%	-15.33%	-13.0%
Accrued Expenses	$26.37M	$29.80M	$34.58M
YoY Change	-28.44%	-25.27%	-21.06%
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	$181.8M	$195.7M	$203.7M
YoY Change	-16.98%	-17.01%	-18.06%
LONG-TERM LIABILITIES
Long-Term Debt	$373.2M	$373.1M	$372.9M
YoY Change	0.11%	0.11%	0.12%
Other Long-Term Liabilities	$285.0M	$283.7M	$255.8M
YoY Change	-1.97%	-3.83%	8.33%
Total Long-Term Liabilities	$658.2M	$656.8M	$628.7M
YoY Change	-0.8%	-1.63%	3.3%
TOTAL LIABILITIES
Total Short-Term Liabilities	$181.8M	$195.7M	$203.7M
Total Long-Term Liabilities	$658.2M	$656.8M	$628.7M
Total Liabilities	$4.908B	$4.837B	$4.632B
YoY Change	6.48%	7.06%	7.83%
SHAREHOLDERS EQUITY
Retained Earnings	$1.448B	$1.563B	$2.041B
YoY Change	-29.25%	-24.83%	5.57%
Common Stock	$98.95M	$98.95M	$98.94M
YoY Change	0.04%	0.08%	-0.03%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.546B	$1.662B	$2.140B
YoY Change
Total Liabilities & Shareholders Equity	$6.455B	$6.500B	$6.772B
YoY Change	-4.44%	-2.95%	7.02%

Cashflow Statement

Concept	2022 Q3	2022 Q2	2021 Q4
OPERATING ACTIVITIES
Net Income	-$98.30M	-$210.7M	$30.47M
YoY Change	-7661.54%	-292.95%	-81.72%
Depreciation, Depletion And Amortization	$168.9M	$156.5M	$27.21M
YoY Change	10.32%	3.64%	21.46%
Cash From Operating Activities	$89.96M	$88.33M	$73.56M
YoY Change	-18.8%	-38.12%	-54.68%
INVESTING ACTIVITIES
Capital Expenditures	-$8.517M	-$8.799M	-$11.94M
YoY Change	-27.18%	-11.14%	17.1%
Acquisitions
YoY Change
Other Investing Activities	-$17.77M	-$49.98M	-$32.44M
YoY Change	-82.35%	-13.35%	-64.04%
Cash From Investing Activities	-$26.29M	-$58.78M	-$44.38M
YoY Change	-76.61%	-12.9%	-55.79%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-17.79M	-35.31M	-35.22M
YoY Change	-49.74%	0.83%	-1.07%
NET CHANGE
Cash From Operating Activities	89.96M	88.33M	73.56M
Cash From Investing Activities	-26.29M	-58.78M	-44.38M
Cash From Financing Activities	-17.79M	-35.31M	-35.22M
Net Change In Cash	45.88M	-5.762M	-6.049M
YoY Change	-223.98%	-114.32%	-123.0%
FREE CASH FLOW
Cash From Operating Activities	$89.96M	$88.33M	$73.56M
Capital Expenditures	-$8.517M	-$8.799M	-$11.94M
Free Cash Flow	$98.48M	$97.13M	$85.50M
YoY Change	-19.6%	-36.37%	-50.44%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Entity Central Index Key EntityCentralIndexKey	0000064996
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2022-06-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	001-12257
	dei	Entity Registrant Name EntityRegistrantName	MERCURY GENERAL CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-2211612
	dei	Entity Address Address Line1 EntityAddressAddressLine1	4484 Wilshire Boulevard
	dei	Entity Address City Or Town EntityAddressCityOrTown	Los Angeles,
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	90010
	dei	City Area Code CityAreaCode	323
	dei	Local Phone Number LocalPhoneNumber	937-1060
	dei	Security12b Title Security12bTitle	Common Stock
	dei	Trading Symbol TradingSymbol	MCY
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2022Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	55371127	shares
CY2022Q2	mcy	Amortized Cost On Fixed Maturity Trading Investments AmortizedCostOnFixedMaturityTradingInvestments	4003142000	usd
CY2021Q4	mcy	Amortized Cost On Fixed Maturity Trading Investments AmortizedCostOnFixedMaturityTradingInvestments	3909780000	usd
CY2022Q2	us-gaap	Trading Securities Debt TradingSecuritiesDebt	3878684000	usd
CY2021Q4	us-gaap	Trading Securities Debt TradingSecuritiesDebt	4031523000	usd
CY2022Q2	mcy	Cost Equity Security Trading Investments CostEquitySecurityTradingInvestments	741090000	usd
CY2021Q4	mcy	Cost Equity Security Trading Investments CostEquitySecurityTradingInvestments	754536000	usd
CY2022Q2	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	782802000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	970939000	usd
CY2022Q2	mcy	Cost Short Term Investments CostShortTermInvestments	174874000	usd
CY2021Q4	mcy	Cost Short Term Investments CostShortTermInvestments	141206000	usd
CY2022Q2	us-gaap	Other Short Term Investments OtherShortTermInvestments	172130000	usd
CY2021Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	140127000	usd
CY2022Q2	us-gaap	Investments Investments	4833616000	usd
CY2021Q4	us-gaap	Investments Investments	5142589000	usd
CY2022Q2	us-gaap	Cash Cash	290002000	usd
CY2021Q4	us-gaap	Cash Cash	335557000	usd
CY2022Q2	us-gaap	Premiums Receivable Gross PremiumsReceivableGross	639272000	usd
CY2021Q4	us-gaap	Premiums Receivable Gross PremiumsReceivableGross	621740000	usd
CY2022Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2021Q4	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2022Q2	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	633272000	usd
CY2021Q4	us-gaap	Premiums Receivable At Carrying Value PremiumsReceivableAtCarryingValue	615740000	usd
CY2022Q2	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	46071000	usd
CY2021Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	43299000	usd
CY2022Q2	us-gaap	Other Receivables OtherReceivables	7358000	usd
CY2021Q4	us-gaap	Other Receivables OtherReceivables	7600000	usd
CY2022Q2	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	686701000	usd
CY2021Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	666639000	usd
CY2022Q2	us-gaap	Reinsurance Receivables Case Basis ReinsuranceReceivablesCaseBasis	27707000	usd
CY2021Q4	us-gaap	Reinsurance Receivables Case Basis ReinsuranceReceivablesCaseBasis	45000000	usd
CY2022Q2	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	273533000	usd
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	258259000	usd
CY2022Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	318453000	usd
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	308997000	usd
CY2022Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	189600000	usd
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	191332000	usd
CY2022Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26952000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	31967000	usd
CY2022Q2	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	44460000	usd
CY2021Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	20108000	usd
CY2022Q2	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	39071000	usd
CY2021Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	0	usd
CY2022Q2	us-gaap	Goodwill Goodwill	42796000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	42796000	usd
CY2022Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	9722000	usd
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	10255000	usd
CY2022Q2	us-gaap	Other Assets OtherAssets	35505000	usd
CY2021Q4	us-gaap	Other Assets OtherAssets	27970000	usd
CY2022Q2	us-gaap	Assets Assets	6499665000	usd
CY2021Q4	us-gaap	Assets Assets	6772472000	usd
CY2022Q2	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	2386822000	usd
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Property Casualty Liability LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability	2226430000	usd
CY2022Q2	us-gaap	Unearned Premiums UnearnedPremiums	1597940000	usd
CY2021Q4	us-gaap	Unearned Premiums UnearnedPremiums	1519799000	usd
CY2022Q2	us-gaap	Notes Payable NotesPayable	373130000	usd
CY2021Q4	us-gaap	Notes Payable NotesPayable	372931000	usd
CY2022Q2	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	165922000	usd
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	169125000	usd
CY2022Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	29799000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	34577000	usd
CY2022Q2	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	0	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	53569000	usd
CY2022Q2	us-gaap	Other Liabilities OtherLiabilities	283687000	usd
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	255760000	usd
CY2022Q2	us-gaap	Liabilities Liabilities	4837300000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	4632191000	usd
CY2022Q2	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2021Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q2	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2022Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	55371000	shares
CY2022Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	55371000	shares
CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	55371000	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	55371000	shares
CY2022Q2	us-gaap	Common Stock Value CommonStockValue	98947000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	98943000	usd
CY2022Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1563418000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2041338000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1662365000	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2140281000	usd
CY2022Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6499665000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6772472000	usd
CY2022Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	987512000	usd
CY2021Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	926820000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	1950062000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	1842741000	usd
CY2022Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	38555000	usd
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	30953000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	73906000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	63232000	usd
CY2022Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-241938000	usd
CY2021Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	58805000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-437024000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	100496000	usd
CY2022Q2	us-gaap	Other Income OtherIncome	1496000	usd
CY2021Q2	us-gaap	Other Income OtherIncome	2197000	usd
	us-gaap	Other Income OtherIncome	4142000	usd
	us-gaap	Other Income OtherIncome	5402000	usd
CY2022Q2	us-gaap	Revenues Revenues	785625000	usd
CY2021Q2	us-gaap	Revenues Revenues	1018775000	usd
	us-gaap	Revenues Revenues	1591086000	usd
	us-gaap	Revenues Revenues	2011871000	usd
CY2022Q2	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	826779000	usd
CY2021Q2	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	657228000	usd
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1648713000	usd
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1283572000	usd
CY2022Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	156482000	usd
CY2021Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	150984000	usd
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	318574000	usd
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	315414000	usd
CY2022Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	69430000	usd
CY2021Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	70927000	usd
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	139720000	usd
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	136485000	usd
CY2022Q2	us-gaap	Interest Expense InterestExpense	4274000	usd
CY2021Q2	us-gaap	Interest Expense InterestExpense	4235000	usd
	us-gaap	Interest Expense InterestExpense	8548000	usd
	us-gaap	Interest Expense InterestExpense	8577000	usd
CY2022Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1056965000	usd
CY2021Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	883374000	usd
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2115555000	usd
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1744048000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-271340000	usd
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	135401000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-524469000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	267823000	usd
CY2022Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-60659000	usd
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	26220000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-116870000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	51647000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	-210681000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	109181000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-407599000	usd
	us-gaap	Net Income Loss NetIncomeLoss	216176000	usd
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-3.80
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.97
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-7.36
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.90
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-3.80
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.97
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-7.36
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.90
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	55371000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	55371000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	55371000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	55366000	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55371000	shares
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55376000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55371000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55375000	shares
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1662365000	usd
CY2021Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2178631000	usd
CY2022Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1662365000	usd
CY2021Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2178631000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-407599000	usd
	us-gaap	Net Income Loss NetIncomeLoss	216176000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	45699000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	36842000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-437024000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	100496000	usd
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	17532000	usd
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	26634000	usd
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-17293000	usd
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	4217000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	116992000	usd
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-435000	usd
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	15274000	usd
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	3829000	usd
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	160392000	usd
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	99711000	usd
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	78141000	usd
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	65251000	usd
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-1756000	usd
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	375000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	15000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	70000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	15495000	usd
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	33557000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	194906000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	317241000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	777936000	usd
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	574598000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	365827000	usd
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	86022000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	266801000	usd
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	225650000	usd
	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	484172000	usd
	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	434406000	usd
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	504912000	usd
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	466292000	usd
	us-gaap	Increase Decrease In Broker Dealer Related Receivables Payables Net IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet	-2694000	usd
	us-gaap	Increase Decrease In Broker Dealer Related Receivables Payables Net IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet	-32107000	usd
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	32711000	usd
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	1126000	usd
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	17072000	usd
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	17802000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2454000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-973000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-169203000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-216888000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	70321000	usd
	us-gaap	Payments Of Ordinary Dividends PaymentsOfOrdinaryDividends	70044000	usd
CY2021Q2	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	usd
	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	215000	usd
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	937000	usd
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	388000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-71258000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-70217000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-45555000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	30136000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	335557000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	348479000	usd
CY2022Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	290002000	usd
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	378615000	usd
	us-gaap	Interest Paid Net InterestPaidNet	8325000	usd
	us-gaap	Interest Paid Net InterestPaidNet	8303000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	175000	usd
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	5000000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	51209000	usd
	us-gaap	Use Of Estimates UseOfEstimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. These estimates require the Company to apply complex assumptions and judgments, and often the Company must make estimates about the effects of matters that are inherently uncertain and will likely change in subsequent periods. The most significant assumptions in the preparation of these consolidated financial statements relate to reserves for losses and loss adjustment expenses ("LAE"). Actual results could differ from those estimates. See Note 1. Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2021
CY2022Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.6350
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.6325
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.2700
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.2650
CY2022Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	2800000	usd
CY2022Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	156500000	usd
CY2021Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	151000000	usd
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	318600000	usd
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	315400000	usd
CY2022Q2	us-gaap	Advertising Expense AdvertisingExpense	3800000	usd
CY2021Q2	us-gaap	Advertising Expense AdvertisingExpense	11600000	usd
	us-gaap	Advertising Expense AdvertisingExpense	7800000	usd
	us-gaap	Advertising Expense AdvertisingExpense	21400000	usd
CY2022Q2	us-gaap	Reinsurance Recoverables Gross ReinsuranceRecoverablesGross	25000000	usd
	us-gaap	Reinsurance Retention Policy Reinsured Risk Percentage ReinsuranceRetentionPolicyReinsuredRiskPercentage	0.735
CY2022Q2	us-gaap	Ceded Premiums Earned CededPremiumsEarned	17000000	usd
CY2021Q2	us-gaap	Ceded Premiums Earned CededPremiumsEarned	16000000	usd
	us-gaap	Ceded Premiums Earned CededPremiumsEarned	35000000	usd
	us-gaap	Ceded Premiums Earned CededPremiumsEarned	31000000	usd
CY2022Q2	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	6000000	usd
CY2021Q2	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	4000000	usd
	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	13000000	usd
	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	3000000	usd
CY2022Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	4600000	usd
CY2021Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	3200000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	9000000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	11300000	usd
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	5600000	usd
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	6900000	usd
CY2022Q2	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	usd
CY2022Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	usd
CY2021Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	0	usd
CY2021Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	0	usd
CY2022Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	0	usd
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	0	usd
CY2021Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts Recoveries PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries	147000	usd
	us-gaap	Premiums Receivable Allowance For Doubtful Accounts Recoveries PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries	310000	usd
	us-gaap	Premiums Receivable Allowance For Doubtful Accounts Recoveries PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries	303000	usd
CY2022Q1	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2021Q1	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	7000000	usd
CY2021Q4	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2020Q4	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	10000000	usd
CY2022Q2	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	-1007000	usd
CY2021Q2	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	390000	usd
	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	-2177000	usd
	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	2532000	usd
CY2022Q2	mcy	Premium Receivable Allowancefor Credit Loss Writeoff PremiumReceivableAllowanceforCreditLossWriteoff	1168000	usd
CY2021Q2	mcy	Premium Receivable Allowancefor Credit Loss Writeoff PremiumReceivableAllowanceforCreditLossWriteoff	757000	usd
	mcy	Premium Receivable Allowancefor Credit Loss Writeoff PremiumReceivableAllowanceforCreditLossWriteoff	2487000	usd
	mcy	Premium Receivable Allowancefor Credit Loss Writeoff PremiumReceivableAllowanceforCreditLossWriteoff	1771000	usd
CY2022Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts Recoveries PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries	161000	usd
CY2022Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2021Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2022Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2021Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	6000000	usd
CY2022Q2	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	0	usd
	mcy	Fair Value Assets Level1 To Level2 To Level3 Transfers Amount FairValueAssetsLevel1ToLevel2ToLevel3TransfersAmount	0	usd
CY2022Q2	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-224309000	usd
CY2021Q2	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	44795000	usd
	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-422556000	usd
	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	71314000	usd
	mcy	Percentage Of Unadjusted Fair Value Obtained PercentageOfUnadjustedFairValueObtained	0.981
CY2022Q2	mcy	Three Private Equity Funds Using Nav ThreePrivateEquityFundsUsingNAV	89300000	usd
CY2022Q2	mcy	One Private Equity Fund Using Nav OnePrivateEquityFundUsingNAV	600000	usd
	mcy	Fair Value Assets Level1 To Level2 To Level3 Transfers Amount FairValueAssetsLevel1ToLevel2ToLevel3TransfersAmount	0	usd
CY2022Q2	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0	usd
CY2021Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0	usd
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2022Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	75962000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	66240000	usd
CY2022Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	9722000	usd
CY2021Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	75962000	usd
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	65707000	usd
CY2021Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	10255000	usd
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	300000	usd
CY2022Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	300000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	500000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	500000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	510000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	879000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	851000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	807000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	807000	usd
CY2022Q2	mcy	Finite Lived Intangible Asset Expected Amortization After Year Four FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour	4468000	usd
CY2022Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8322000	usd
CY2018Q1	mcy	Numberof Executives NumberofExecutives	4	executive
CY2022Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	8.09
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.3318
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0262
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0540
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P72M
	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	51359000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-15409000	usd
	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="text-align:justify;text-indent:22.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table presents the activity in loss and loss adjustment expense reserves:</span></div><div style="margin-top:5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"/><td style="width:73.900%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.034%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.530%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.036%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">Six Months Ended June 30,</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2022</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2021</span></td></tr><tr style="height:3pt"><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="padding:0 1pt"/><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:100%"> </span></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">(Amounts in thousands)</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Gross reserves, beginning of period</span></td><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,226,430 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,991,304 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><div style="padding-left:18pt;text-indent:-4.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Reinsurance recoverables on unpaid losses, beginning of period</span></div></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(41,377)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(54,460)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves, beginning of period</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,185,053 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,936,844 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Incurred losses and loss adjustment expenses related to:</span></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,597,354 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,298,981 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Prior years</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">51,359 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(15,409)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 30.25pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total incurred losses and loss adjustment expenses</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,648,713 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,283,572 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Loss and loss adjustment expense payments related to:</span></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">738,472 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">641,726 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Prior years</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">735,058 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">539,871 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 30.25pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total payments</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,473,530 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">1,181,597 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves, end of period</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,360,236 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,038,819 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Reinsurance recoverables on unpaid losses, end of period</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">26,586 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">52,196 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Gross reserves, end of period</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,386,822 </span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,091,015 </span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div>
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	2226430000	usd
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	1991304000	usd
CY2021Q4	mcy	Reissuance Recoverable ReissuanceRecoverable	41377000	usd
CY2020Q4	mcy	Reissuance Recoverable ReissuanceRecoverable	54460000	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	2185053000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	1936844000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	1597354000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	1298981000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1648713000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	1283572000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	738472000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	641726000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	735058000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	539871000	usd
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	1473530000	usd
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	1181597000	usd
CY2022Q2	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	2360236000	usd
CY2021Q2	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	2038819000	usd
CY2022Q2	mcy	Reissuance Recoverable ReissuanceRecoverable	26586000	usd
CY2021Q2	mcy	Reissuance Recoverable ReissuanceRecoverable	52196000	usd
CY2022Q2	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	2386822000	usd
CY2021Q2	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	2091015000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	51400000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-15400000	usd
CY2022Q2	mcy	Notes Payable Principal NotesPayablePrincipal	375000000	usd
CY2021Q4	mcy	Notes Payable Principal NotesPayablePrincipal	375000000	usd
CY2022Q2	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	1870000	usd
CY2021Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	2069000	usd
CY2022Q2	us-gaap	Notes Payable NotesPayable	373130000	usd
CY2021Q4	us-gaap	Notes Payable NotesPayable	372931000	usd
CY2017Q1	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.044
CY2017Q1	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	3400000	usd
CY2017Q1	mcy	Debt Instrument Discount Percent DebtInstrumentDiscountPercent	0.99847
CY2017Q1	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.0445
CY2022Q2	us-gaap	Ratio Of Indebtedness To Net Capital1 RatioOfIndebtednessToNetCapital1	0.184
CY2022Q2	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	200000	usd
	us-gaap	Increase Decrease In Unearned Premiums Net IncreaseDecreaseInUnearnedPremiumsNet	128000000	usd
	mcy	Number Of Subsidiaries Company Controls NumberOfSubsidiariesCompanyControls	13	subsidiary
CY2022Q2	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	11	state
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2022Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	987500000	usd
CY2021Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	926800000	usd
CY2022Q2	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	826800000	usd
CY2021Q2	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	657200000	usd
CY2022Q2	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	225900000	usd
CY2021Q2	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	222000000.0	usd
CY2022Q2	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	-65200000	usd
CY2021Q2	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	47600000	usd
CY2022Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	38600000	usd
CY2021Q2	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	31000000.0	usd
CY2022Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-241900000	usd
CY2021Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	58800000	usd
CY2022Q2	us-gaap	Other Income OtherIncome	1500000	usd
CY2021Q2	us-gaap	Other Income OtherIncome	2200000	usd
CY2022Q2	us-gaap	Interest Expense InterestExpense	4300000	usd
CY2021Q2	us-gaap	Interest Expense InterestExpense	4200000	usd
CY2022Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-271300000	usd
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	135400000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	-210700000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	109200000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	1950100000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	1842700000	usd
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1648700000	usd
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1283600000	usd
	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	458400000	usd
	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	451800000	usd
	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	-157000000.0	usd
	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	107300000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	73900000	usd
	us-gaap	Interest And Dividend Income Operating InterestAndDividendIncomeOperating	63200000	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-437000000.0	usd
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	100500000	usd
	us-gaap	Other Income OtherIncome	4100000	usd
	us-gaap	Other Income OtherIncome	5400000	usd
	us-gaap	Interest Expense InterestExpense	8500000	usd
	us-gaap	Interest Expense InterestExpense	8600000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-524500000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	267800000	usd
	us-gaap	Net Income Loss NetIncomeLoss	-407600000	usd
	us-gaap	Net Income Loss NetIncomeLoss	216200000	usd
CY2022Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	987500000	usd
CY2021Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	926800000	usd
CY2022Q2	us-gaap	Direct Premiums Written DirectPremiumsWritten	1034100000	usd
CY2021Q2	us-gaap	Direct Premiums Written DirectPremiumsWritten	972900000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	1950100000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	1842700000	usd
	us-gaap	Direct Premiums Written DirectPremiumsWritten	2052300000	usd
	us-gaap	Direct Premiums Written DirectPremiumsWritten	1926300000	usd

Files In Submission

Name	View Source	Status
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0000064996-22-000020-index.html	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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mcy-20220630.xsd	Edgar Link	pending
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R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$MCY
MERCURY GENERAL CORP Stock $mcy

2022 Q3 Form 10-Q Financial Statement

#000006499622000020 Filed on August 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MCY MERCURY GENERAL CORP Stock $mcy

2022 Q3 Form 10-Q Financial Statement

#000006499622000020 Filed on August 02, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MCY
MERCURY GENERAL CORP Stock $mcy