2021 Q4 Form 10-K Financial Statement
#000006499622000004 Filed on February 15, 2022
Income Statement
Concept | 2021 Q4 | 2021 | 2020 Q4 |
---|---|---|---|
Revenue | $1.049B | $3.993B | $1.072B |
YoY Change | -2.08% | 5.52% | 8.46% |
Cost Of Revenue | $12.80M | ||
YoY Change | 8.47% | ||
Gross Profit | $3.981B | ||
YoY Change | 5.51% | ||
Gross Profit Margin | 99.68% | ||
Selling, General & Admin | |||
YoY Change | |||
% of Gross Profit | |||
Research & Development | |||
YoY Change | |||
% of Gross Profit | |||
Depreciation & Amortization | $27.21M | $32.50M | $22.40M |
YoY Change | 21.46% | 16.07% | 2.28% |
% of Gross Profit | 0.82% | ||
Operating Expenses | $1.010B | $3.677B | $860.2M |
YoY Change | 17.43% | 11.12% | -9.95% |
Operating Profit | $303.6M | ||
YoY Change | -34.52% | ||
Interest Expense | -$4.268M | $17.10M | -$4.300M |
YoY Change | -0.74% | 0.59% | 0.0% |
% of Operating Profit | 5.63% | ||
Other Income/Expense, Net | |||
YoY Change | |||
Pretax Income | $34.87M | $299.3M | $207.1M |
YoY Change | -83.17% | -34.72% | 627.6% |
Income Tax | $4.393M | $51.37M | $40.40M |
% Of Pretax Income | 12.6% | 17.16% | 19.51% |
Net Earnings | $30.47M | $247.9M | $166.7M |
YoY Change | -81.72% | -33.82% | 426.2% |
Net Earnings / Revenue | 2.9% | 6.21% | 15.56% |
Basic Earnings Per Share | $4.48 | $3.01 | |
Diluted Earnings Per Share | $550.3K | $4.48 | $3.01 |
COMMON SHARES | |||
Basic Shares Outstanding | 55.37M shares | 55.37M shares | 55.36M shares |
Diluted Shares Outstanding | 55.37M shares |
Balance Sheet
Concept | 2021 Q4 | 2021 | 2020 Q4 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | |||
YoY Change | |||
Cash & Equivalents | $335.6M | $348.5M | |
Short-Term Investments | |||
Other Short-Term Assets | |||
YoY Change | |||
Inventory | |||
Prepaid Expenses | |||
Receivables | |||
Other Receivables | |||
Total Short-Term Assets | $7.600M | $7.600M | $10.70M |
YoY Change | -28.97% | -28.97% | 64.62% |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $191.3M | $226.8M | $178.9M |
YoY Change | 6.94% | 1.89% | 5.88% |
Goodwill | $42.80M | $42.80M | |
YoY Change | 0.0% | 0.0% | |
Intangibles | $10.26M | $11.32M | |
YoY Change | -9.42% | 6.45% | |
Long-Term Investments | $5.143B | $5.143B | $4.729B |
YoY Change | 8.74% | 8.74% | 9.67% |
Other Assets | |||
YoY Change | |||
Total Long-Term Assets | $6.765B | $6.765B | $6.318B |
YoY Change | 7.08% | 7.08% | 7.39% |
TOTAL ASSETS | |||
Total Short-Term Assets | $7.600M | $7.600M | $10.70M |
Total Long-Term Assets | $6.765B | $6.765B | $6.318B |
Total Assets | $6.772B | $6.772B | $6.328B |
YoY Change | 7.02% | 7.02% | 7.46% |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $169.1M | $169.1M | $194.4M |
YoY Change | -13.0% | -13.0% | 35.66% |
Accrued Expenses | $34.58M | $34.58M | $43.80M |
YoY Change | -21.06% | -21.06% | -8.75% |
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 | $203.7M | $203.7M | $248.6M |
YoY Change | -18.06% | -18.06% | 29.95% |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $372.9M | $376.1M | $372.5M |
YoY Change | 0.12% | 0.18% | 0.11% |
Other Long-Term Liabilities | $255.8M | $252.6M | $236.1M |
YoY Change | 8.33% | 8.29% | 6.64% |
Total Long-Term Liabilities | $628.7M | $628.7M | $608.6M |
YoY Change | 3.3% | 3.28% | 2.54% |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $203.7M | $203.7M | $248.6M |
Total Long-Term Liabilities | $628.7M | $628.7M | $608.6M |
Total Liabilities | $4.632B | $4.632B | $4.296B |
YoY Change | 7.83% | 7.84% | 5.04% |
SHAREHOLDERS EQUITY | |||
Retained Earnings | $2.041B | $1.934B | |
YoY Change | 5.57% | 13.7% | |
Common Stock | $98.94M | $98.97M | |
YoY Change | -0.03% | 0.14% | |
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | |||
YoY Change | |||
Treasury Stock Shares | |||
Shareholders Equity | $2.140B | $2.140B | $2.033B |
YoY Change | |||
Total Liabilities & Shareholders Equity | $6.772B | $6.772B | $6.328B |
YoY Change | 7.02% | 7.02% | 7.46% |
Cashflow Statement
Concept | 2021 Q4 | 2021 | 2020 Q4 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | $30.47M | $247.9M | $166.7M |
YoY Change | -81.72% | -33.82% | 426.2% |
Depreciation, Depletion And Amortization | $27.21M | $32.50M | $22.40M |
YoY Change | 21.46% | 16.07% | 2.28% |
Cash From Operating Activities | $73.56M | $501.6M | $162.3M |
YoY Change | -54.68% | -17.18% | 52.97% |
INVESTING ACTIVITIES | |||
Capital Expenditures | -$11.94M | -$41.44M | -$10.20M |
YoY Change | 17.1% | 3.61% | 22.89% |
Acquisitions | |||
YoY Change | |||
Other Investing Activities | -$32.44M | -$9.096M | -$90.20M |
YoY Change | -64.04% | -55.8% | 7.38% |
Cash From Investing Activities | -$44.38M | -$373.7M | -$100.4M |
YoY Change | -55.79% | -9.15% | 8.78% |
FINANCING ACTIVITIES | |||
Cash Dividend Paid | $140.2M | ||
YoY Change | 0.42% | ||
Common Stock Issuance & Retirement, Net | |||
YoY Change | |||
Debt Paid & Issued, Net | |||
YoY Change | |||
Cash From Financing Activities | -35.22M | -$140.8M | -35.60M |
YoY Change | -1.07% | 0.42% | 2.3% |
NET CHANGE | |||
Cash From Operating Activities | 73.56M | $501.6M | 162.3M |
Cash From Investing Activities | -44.38M | -$373.7M | -100.4M |
Cash From Financing Activities | -35.22M | -$140.8M | -35.60M |
Net Change In Cash | -6.049M | -$12.92M | 26.30M |
YoY Change | -123.0% | -123.89% | -225.24% |
FREE CASH FLOW | |||
Cash From Operating Activities | $73.56M | $501.6M | $162.3M |
Capital Expenditures | -$11.94M | -$41.44M | -$10.20M |
Free Cash Flow | $85.50M | $543.0M | $172.5M |
YoY Change | -50.44% | -15.89% | 50.79% |
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134858000 | USD |
CY2019 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
141263000 | USD |
CY2021 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
111658000 | USD |
CY2019 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
269305000 | USD |
CY2020 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
85731000 | USD |
CY2019 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
222793000 | USD |
CY2021 | us-gaap |
Other Income
OtherIncome
|
10024000 | USD |
CY2020 | us-gaap |
Other Income
OtherIncome
|
8287000 | USD |
CY2019 | us-gaap |
Other Income
OtherIncome
|
9044000 | USD |
CY2021 | us-gaap |
Revenues
Revenues
|
3993357000 | USD |
CY2020 | us-gaap |
Revenues
Revenues
|
3784511000 | USD |
CY2019 | us-gaap |
Revenues
Revenues
|
3972518000 | USD |
CY2021 | us-gaap |
Policyholder Benefits And Claims Incurred Net
PolicyholderBenefitsAndClaimsIncurredNet
|
2760155000 | USD |
CY2020 | us-gaap |
Policyholder Benefits And Claims Incurred Net
PolicyholderBenefitsAndClaimsIncurredNet
|
2395343000 | USD |
CY2019 | us-gaap |
Policyholder Benefits And Claims Incurred Net
PolicyholderBenefitsAndClaimsIncurredNet
|
2706024000 | USD |
CY2021 | us-gaap |
Deferred Policy Acquisition Cost Amortization Expense
DeferredPolicyAcquisitionCostAmortizationExpense
|
633385000 | USD |
CY2020 | us-gaap |
Deferred Policy Acquisition Cost Amortization Expense
DeferredPolicyAcquisitionCostAmortizationExpense
|
627788000 | USD |
CY2019 | us-gaap |
Deferred Policy Acquisition Cost Amortization Expense
DeferredPolicyAcquisitionCostAmortizationExpense
|
602085000 | USD |
CY2021 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
283397000 | USD |
CY2020 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
285831000 | USD |
CY2021 | us-gaap |
Interest Expense
InterestExpense
|
17113000 | USD |
CY2020 | us-gaap |
Interest Expense
InterestExpense
|
17048000 | USD |
CY2019 | us-gaap |
Interest Expense
InterestExpense
|
17035000 | USD |
CY2021 | us-gaap |
Benefits Losses And Expenses
BenefitsLossesAndExpenses
|
3694050000 | USD |
CY2020 | us-gaap |
Benefits Losses And Expenses
BenefitsLossesAndExpenses
|
3326010000 | USD |
CY2019 | us-gaap |
Benefits Losses And Expenses
BenefitsLossesAndExpenses
|
3594449000 | USD |
CY2021 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
299307000 | USD |
CY2020 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
458501000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
378069000 | USD |
CY2021 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
51370000 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
83894000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
57982000 | USD |
CY2021 | us-gaap |
Net Income Loss
NetIncomeLoss
|
247937000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
374607000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
320087000 | USD |
CY2021 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.48 | |
CY2020 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
6.77 | |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
5.78 | |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
5.78 | |
CY2021 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.48 | |
CY2020 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
6.77 | |
CY2021Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
2140281000 | USD |
CY2020Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
2032597000 | USD |
CY2019Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
1799502000 | USD |
CY2021 | us-gaap |
Net Income Loss
NetIncomeLoss
|
247937000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
374607000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
320087000 | USD |
CY2021 | us-gaap |
Depreciation Amortization And Accretion Net
DepreciationAmortizationAndAccretionNet
|
79056000 | USD |
CY2020 | us-gaap |
Depreciation Amortization And Accretion Net
DepreciationAmortizationAndAccretionNet
|
68463000 | USD |
CY2019 | us-gaap |
Depreciation Amortization And Accretion Net
DepreciationAmortizationAndAccretionNet
|
64730000 | USD |
CY2021 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
111658000 | USD |
CY2020 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
85731000 | USD |
CY2019 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
222793000 | USD |
CY2021 | us-gaap |
Increase Decrease In Premiums Receivable
IncreaseDecreaseInPremiumsReceivable
|
26670000 | USD |
CY2020 | us-gaap |
Increase Decrease In Premiums Receivable
IncreaseDecreaseInPremiumsReceivable
|
-13946000 | USD |
CY2019 | us-gaap |
Increase Decrease In Premiums Receivable
IncreaseDecreaseInPremiumsReceivable
|
49832000 | USD |
CY2021 | us-gaap |
Increase Decrease In Reinsurance Recoverable
IncreaseDecreaseInReinsuranceRecoverable
|
-3488000 | USD |
CY2020 | us-gaap |
Increase Decrease In Reinsurance Recoverable
IncreaseDecreaseInReinsuranceRecoverable
|
-30127000 | USD |
CY2019 | us-gaap |
Increase Decrease In Reinsurance Recoverable
IncreaseDecreaseInReinsuranceRecoverable
|
-142314000 | USD |
CY2021 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
18097000 | USD |
CY2020 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-31236000 | USD |
CY2019 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
-72545000 | USD |
CY2021 | us-gaap |
Increase Decrease In Deferred Policy Acquisition Costs
IncreaseDecreaseInDeferredPolicyAcquisitionCosts
|
11265000 | USD |
CY2020 | us-gaap |
Increase Decrease In Deferred Policy Acquisition Costs
IncreaseDecreaseInDeferredPolicyAcquisitionCosts
|
13828000 | USD |
CY2019 | us-gaap |
Increase Decrease In Deferred Policy Acquisition Costs
IncreaseDecreaseInDeferredPolicyAcquisitionCosts
|
18035000 | USD |
CY2021 | us-gaap |
Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve
IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve
|
235126000 | USD |
CY2020 | us-gaap |
Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve
IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve
|
70049000 | USD |
CY2019 | us-gaap |
Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve
IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve
|
91843000 | USD |
CY2021 | us-gaap |
Increase Decrease In Unearned Premiums
IncreaseDecreaseInUnearnedPremiums
|
113926000 | USD |
CY2020 | us-gaap |
Increase Decrease In Unearned Premiums
IncreaseDecreaseInUnearnedPremiums
|
50326000 | USD |
CY2019 | us-gaap |
Increase Decrease In Unearned Premiums
IncreaseDecreaseInUnearnedPremiums
|
119366000 | USD |
CY2021 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
-26724000 | USD |
CY2020 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
51988000 | USD |
CY2019 | us-gaap |
Increase Decrease In Accounts Payable And Accrued Liabilities
IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
|
26493000 | USD |
CY2021 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
141000 | USD |
CY2020 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
142000 | USD |
CY2019 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
123000 | USD |
CY2021 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
16324000 | USD |
CY2020 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
14291000 | USD |
CY2019 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-27163000 | USD |
CY2021 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
501584000 | USD |
CY2020 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
605616000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
519678000 | USD |
CY2021 | us-gaap |
Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
|
1460641000 | USD |
CY2020 | us-gaap |
Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
|
878213000 | USD |
CY2019 | us-gaap |
Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
|
491795000 | USD |
CY2021 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
336201000 | USD |
CY2020 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
168087000 | USD |
CY2019 | us-gaap |
Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
|
136560000 | USD |
CY2021 | us-gaap |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
|
518557000 | USD |
CY2020 | us-gaap |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
|
250878000 | USD |
CY2019 | us-gaap |
Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities
ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities
|
316860000 | USD |
CY2021 | us-gaap |
Payments To Acquire Equity Securities Fv Ni
PaymentsToAcquireEquitySecuritiesFvNi
|
958008000 | USD |
CY2020 | us-gaap |
Payments To Acquire Equity Securities Fv Ni
PaymentsToAcquireEquitySecuritiesFvNi
|
1230785000 | USD |
CY2019 | us-gaap |
Payments To Acquire Equity Securities Fv Ni
PaymentsToAcquireEquitySecuritiesFvNi
|
1174759000 | USD |
CY2021 | us-gaap |
Proceeds From Sale Of Equity Securities Fv Ni
ProceedsFromSaleOfEquitySecuritiesFvNi
|
943857000 | USD |
CY2020 | us-gaap |
Proceeds From Sale Of Equity Securities Fv Ni
ProceedsFromSaleOfEquitySecuritiesFvNi
|
1174540000 | USD |
CY2019 | us-gaap |
Proceeds From Sale Of Equity Securities Fv Ni
ProceedsFromSaleOfEquitySecuritiesFvNi
|
1088701000 | USD |
CY2021 | mcy |
Proceeds From Calls Of Available For Sale Securities
ProceedsFromCallsOfAvailableForSaleSecurities
|
0 | USD |
CY2020 | mcy |
Proceeds From Calls Of Available For Sale Securities
ProceedsFromCallsOfAvailableForSaleSecurities
|
3880000 | USD |
CY2019 | mcy |
Proceeds From Calls Of Available For Sale Securities
ProceedsFromCallsOfAvailableForSaleSecurities
|
0 | USD |
CY2021 | us-gaap |
Increase Decrease In Broker Dealer Related Receivables Payables Net
IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet
|
-8327000 | USD |
CY2020 | us-gaap |
Increase Decrease In Broker Dealer Related Receivables Payables Net
IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet
|
-873000 | USD |
CY2019 | us-gaap |
Increase Decrease In Broker Dealer Related Receivables Payables Net
IncreaseDecreaseInBrokerDealerRelatedReceivablesPayablesNet
|
2536000 | USD |
CY2021 | us-gaap |
Payments For Proceeds From Short Term Investments
PaymentsForProceedsFromShortTermInvestments
|
-270383000 | USD |
CY2020 | us-gaap |
Payments For Proceeds From Short Term Investments
PaymentsForProceedsFromShortTermInvestments
|
-118830000 | USD |
CY2019 | us-gaap |
Payments For Proceeds From Short Term Investments
PaymentsForProceedsFromShortTermInvestments
|
240391000 | USD |
CY2021 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
41442000 | USD |
CY2020 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
39953000 | USD |
CY2019 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
40088000 | USD |
CY2021 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-9096000 | USD |
CY2020 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-20577000 | USD |
CY2019 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-6247000 | USD |
CY2021 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-373670000 | USD |
CY2020 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-411286000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-401201000 | USD |
CY2021 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
140226000 | USD |
CY2020 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
139640000 | USD |
CY2019 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
139071000 | USD |
CY2021 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
215000 | USD |
CY2020 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
701000 | USD |
CY2021 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
825000 | USD |
CY2020 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
609000 | USD |
CY2019 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
0 | USD |
CY2021 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-140836000 | USD |
CY2020 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-140249000 | USD |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-138370000 | USD |
CY2021 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
-12922000 | USD |
CY2020 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
54081000 | USD |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
-19893000 | USD |
CY2020Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
348479000 | USD |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
294398000 | USD |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
314291000 | 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 |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
294398000 | USD |
CY2021 | us-gaap |
Interest Paid Net
InterestPaidNet
|
16616000 | USD |
CY2020 | us-gaap |
Interest Paid Net
InterestPaidNet
|
16599000 | USD |
CY2019 | us-gaap |
Interest Paid Net
InterestPaidNet
|
16586000 | USD |
CY2021 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
69467000 | USD |
CY2020 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
52659000 | USD |
CY2019 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-14564000 | USD |
CY2021 | mcy |
Number Of Companies
NumberOfCompanies
|
13 | Subsidiary |
CY2021Q4 | us-gaap |
Number Of States In Which Entity Operates
NumberOfStatesInWhichEntityOperates
|
11 | State |
CY2021 | mcy |
Percentage Of Direct Premiums Written As Private Passenger Automobile Lines Of Insurance
PercentageOfDirectPremiumsWrittenAsPrivatePassengerAutomobileLinesOfInsurance
|
0.68 | |
CY2021 | mcy |
Percentage Of Private Passenger Automobile Premiums Written In California
PercentageOfPrivatePassengerAutomobilePremiumsWrittenInCalifornia
|
0.87 | |
CY2020 | mcy |
Percentage Of Private Passenger Automobile Premiums Written In California
PercentageOfPrivatePassengerAutomobilePremiumsWrittenInCalifornia
|
0.88 | |
CY2019 | mcy |
Percentage Of Private Passenger Automobile Premiums Written In California
PercentageOfPrivatePassengerAutomobilePremiumsWrittenInCalifornia
|
0.88 | |
CY2021 | 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 revenue 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 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. Actual results could differ from those estimates. | |
CY2021 | mcy |
Percentage Of Unadjusted Fair Value Obtained
PercentageOfUnadjustedFairValueObtained
|
0.979 | |
CY2021 | mcy |
Percentage By Which Dividend Income On Non Redeemable Preferred Stock Partnership Common Stock Is Partially Tax Sheltered
PercentageByWhichDividendIncomeOnNonRedeemablePreferredStockPartnershipCommonStockIsPartiallyTaxSheltered
|
0.50 | |
CY2020Q4 | mcy |
Security Deposits By Insurance Companies
SecurityDepositsByInsuranceCompanies
|
15000000 | USD |
CY2021Q4 | mcy |
Security Deposits By Insurance Companies
SecurityDepositsByInsuranceCompanies
|
15000000 | USD |
CY2021 | us-gaap |
Deferred Policy Acquisition Cost Amortization Expense
DeferredPolicyAcquisitionCostAmortizationExpense
|
633400000 | USD |
CY2020 | us-gaap |
Deferred Policy Acquisition Cost Amortization Expense
DeferredPolicyAcquisitionCostAmortizationExpense
|
627800000 | USD |
CY2019 | us-gaap |
Deferred Policy Acquisition Cost Amortization Expense
DeferredPolicyAcquisitionCostAmortizationExpense
|
602100000 | USD |
CY2021 | us-gaap |
Advertising Expense
AdvertisingExpense
|
50100000 | USD |
CY2020 | us-gaap |
Advertising Expense
AdvertisingExpense
|
37700000 | USD |
CY2019 | us-gaap |
Advertising Expense
AdvertisingExpense
|
42200000 | USD |
CY2019 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
0 | USD |
CY2020 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
0 | USD |
CY2021 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
0 | USD |
CY2020 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2021 | us-gaap |
Goodwill Impairment Loss
GoodwillImpairmentLoss
|
0 | USD |
CY2021 | us-gaap |
Premiums Written Net
PremiumsWrittenNet
|
3860000000 | USD |
CY2020 | us-gaap |
Premiums Written Net
PremiumsWrittenNet
|
3610000000 | USD |
CY2019 | us-gaap |
Premiums Written Net
PremiumsWrittenNet
|
3730000000 | USD |
CY2020 | us-gaap |
Increase Decrease In Unearned Premiums Net
IncreaseDecreaseInUnearnedPremiumsNet
|
128000000 | USD |
CY2021Q4 | us-gaap |
Reinsurance Recoverables Gross
ReinsuranceRecoverablesGross
|
25000000 | USD |
CY2021 | us-gaap |
Reinsurance Retention Policy Reinsured Risk Percentage
ReinsuranceRetentionPolicyReinsuredRiskPercentage
|
0.735 | |
CY2021 | us-gaap |
Reinsurance Retention Policy Excess Retention Amount Reinsured
ReinsuranceRetentionPolicyExcessRetentionAmountReinsured
|
792000000 | USD |
CY2021 | us-gaap |
Reinsurance Retention Policy Amount Retained
ReinsuranceRetentionPolicyAmountRetained
|
40000000 | USD |
CY2021 | us-gaap |
Ceded Premiums Earned
CededPremiumsEarned
|
65000000 | USD |
CY2020 | us-gaap |
Ceded Premiums Earned
CededPremiumsEarned
|
56000000 | USD |
CY2019 | us-gaap |
Ceded Premiums Earned
CededPremiumsEarned
|
57000000 | USD |
CY2021 | us-gaap |
Reinsurance Effect On Claims And Benefits Incurred Amount Ceded
ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded
|
10000000 | USD |
CY2020 | us-gaap |
Reinsurance Effect On Claims And Benefits Incurred Amount Ceded
ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded
|
28000000 | USD |
CY2019 | us-gaap |
Reinsurance Effect On Claims And Benefits Incurred Amount Ceded
ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded
|
71000000 | USD |
CY2021 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1
ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
|
P4Y | |
CY2021 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
20200000 | USD |
CY2020 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
18000000 | USD |
CY2019 | us-gaap |
Revenue From Contract With Customer Including Assessed Tax
RevenueFromContractWithCustomerIncludingAssessedTax
|
16300000 | USD |
CY2021 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
12800000 | USD |
CY2020 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
11800000 | USD |
CY2019 | us-gaap |
Cost Of Goods And Services Sold
CostOfGoodsAndServicesSold
|
10500000 | USD |
CY2021Q4 | us-gaap |
Accounts Receivable Gross
AccountsReceivableGross
|
1400000 | USD |
CY2020Q4 | us-gaap |
Accounts Receivable Gross
AccountsReceivableGross
|
1200000 | USD |
CY2020Q4 | us-gaap |
Contract With Customer Refund Liability
ContractWithCustomerRefundLiability
|
900000 | USD |
CY2021Q4 | us-gaap |
Contract With Customer Refund Liability
ContractWithCustomerRefundLiability
|
900000 | USD |
CY2021Q4 | us-gaap |
Capitalized Contract Cost Net
CapitalizedContractCostNet
|
2800000 | USD |
CY2020Q4 | us-gaap |
Capitalized Contract Cost Net
CapitalizedContractCostNet
|
4800000 | USD |
CY2021Q4 | us-gaap |
Capitalized Contract Cost Accumulated Amortization
CapitalizedContractCostAccumulatedAmortization
|
6000000 | USD |
CY2020Q4 | us-gaap |
Capitalized Contract Cost Accumulated Amortization
CapitalizedContractCostAccumulatedAmortization
|
2100000 | USD |
CY2021 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
3900000 | USD |
CY2021Q4 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts
PremiumsReceivableAllowanceForDoubtfulAccounts
|
6000000 | USD |
CY2020 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts Recoveries
PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries
|
812000 | USD |
CY2019 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts Recoveries
PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries
|
825000 | USD |
CY2020 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
1800000 | USD |
CY2019 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
300000 | USD |
CY2020Q4 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts
PremiumsReceivableAllowanceForDoubtfulAccounts
|
10000000 | USD |
CY2019Q4 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts
PremiumsReceivableAllowanceForDoubtfulAccounts
|
1445000 | USD |
CY2018Q4 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts
PremiumsReceivableAllowanceForDoubtfulAccounts
|
1458000 | USD |
CY2021 | us-gaap |
Premium Receivable Credit Loss Expense Reversal
PremiumReceivableCreditLossExpenseReversal
|
893000 | USD |
CY2020 | us-gaap |
Premium Receivable Credit Loss Expense Reversal
PremiumReceivableCreditLossExpenseReversal
|
-10294000 | USD |
CY2019 | us-gaap |
Premium Receivable Credit Loss Expense Reversal
PremiumReceivableCreditLossExpenseReversal
|
-6162000 | USD |
CY2021 | mcy |
Premium Receivable Allowancefor Credit Loss Writeoff
PremiumReceivableAllowanceforCreditLossWriteoff
|
3693000 | USD |
CY2020 | mcy |
Premium Receivable Allowancefor Credit Loss Writeoff
PremiumReceivableAllowanceforCreditLossWriteoff
|
4406000 | USD |
CY2019 | mcy |
Premium Receivable Allowancefor Credit Loss Writeoff
PremiumReceivableAllowanceforCreditLossWriteoff
|
7000000 | USD |
CY2021 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts Recoveries
PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries
|
586000 | USD |
CY2020Q4 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts
PremiumsReceivableAllowanceForDoubtfulAccounts
|
10000000 | USD |
CY2019Q4 | us-gaap |
Premiums Receivable Allowance For Doubtful Accounts
PremiumsReceivableAllowanceForDoubtfulAccounts
|
1445000 | USD |
CY2020Q4 | us-gaap |
Reinsurance Recoverables Allowance
ReinsuranceRecoverablesAllowance
|
91000 | USD |
CY2019Q4 | us-gaap |
Reinsurance Recoverables Allowance
ReinsuranceRecoverablesAllowance
|
0 | USD |
CY2018Q4 | us-gaap |
Reinsurance Recoverables Allowance
ReinsuranceRecoverablesAllowance
|
0 | USD |
CY2021 | us-gaap |
Reinsurance Recoverable Credit Loss Expense Reversal
ReinsuranceRecoverableCreditLossExpenseReversal
|
-91000 | USD |
CY2020 | us-gaap |
Reinsurance Recoverable Credit Loss Expense Reversal
ReinsuranceRecoverableCreditLossExpenseReversal
|
-68000 | USD |
CY2019 | us-gaap |
Reinsurance Recoverable Credit Loss Expense Reversal
ReinsuranceRecoverableCreditLossExpenseReversal
|
0 | USD |
CY2021 | us-gaap |
Reinsurance Loss On Uncollectible Accounts In Period Amount
ReinsuranceLossOnUncollectibleAccountsInPeriodAmount
|
0 | USD |
CY2020 | us-gaap |
Reinsurance Loss On Uncollectible Accounts In Period Amount
ReinsuranceLossOnUncollectibleAccountsInPeriodAmount
|
0 | USD |
CY2019 | us-gaap |
Reinsurance Loss On Uncollectible Accounts In Period Amount
ReinsuranceLossOnUncollectibleAccountsInPeriodAmount
|
0 | USD |
CY2021 | us-gaap |
Reinsurance Recoverable Allowance For Credit Loss Recovery
ReinsuranceRecoverableAllowanceForCreditLossRecovery
|
0 | USD |
CY2020 | us-gaap |
Reinsurance Recoverable Allowance For Credit Loss Recovery
ReinsuranceRecoverableAllowanceForCreditLossRecovery
|
0 | USD |
CY2020 | mcy |
Shortterm Investments Realized Loss
ShorttermInvestmentsRealizedLoss
|
2438000 | USD |
CY2019 | us-gaap |
Reinsurance Recoverable Allowance For Credit Loss Recovery
ReinsuranceRecoverableAllowanceForCreditLossRecovery
|
0 | USD |
CY2021Q4 | us-gaap |
Reinsurance Recoverables Allowance
ReinsuranceRecoverablesAllowance
|
0 | USD |
CY2020Q4 | us-gaap |
Reinsurance Recoverables Allowance
ReinsuranceRecoverablesAllowance
|
91000 | USD |
CY2019Q4 | us-gaap |
Reinsurance Recoverables Allowance
ReinsuranceRecoverablesAllowance
|
0 | USD |
CY2021 | us-gaap |
Revenue Recognition Interest
RevenueRecognitionInterest
|
The Company made certain accounting policy elections for its accrued interest receivables on the adoption date of Topic 326 as allowed: a) an election to present accrued interest receivable balances separately from the associated financial assets on the balance sheet, and b) an election not to measure an allowance for credit losses on accrued interest receivable amounts and instead write off uncollectible accrued interest amounts in a timely manner by reversing interest income. As a general policy, the Company writes off the accrued interest receivable balance when it receives a default notice or when the scheduled interest payment is not received, unless management determines that the default is temporary considering all of the relevant information. The Company believes that for the majority of its investment securities, writing off the uncollectible interest receivable balance within a year from the due date is considered timely. In all cases, the Company writes off the accrued interest receivable immediately if management determines that it is not reasonably expected that the payment will be received. The Company did not have any cumulative-effect adjustment as a result of adopting Topic 326 for its accrued interest receivables. The Company's accrued interest receivable balances are included in accrued investment income receivables in its consolidated balance sheets. | |
CY2017Q3 | mcy |
Numberof Acres
NumberofAcres
|
6 | acre |
CY2017Q3 | us-gaap |
Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
|
12200000 | USD |
CY2017Q3 | mcy |
Promissory Note Receivedin Sale Of Property Planand Equipment
PromissoryNoteReceivedinSaleOfPropertyPlanandEquipment
|
5700000 | USD |
CY2017Q3 | mcy |
Stated Interest Rate On Promissory Note
StatedInterestRateOnPromissoryNote
|
0.035 | |
CY2021 | us-gaap |
Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
|
2306000 | USD |
CY2021 | us-gaap |
Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
|
6690000 | USD |
CY2021 | us-gaap |
Debt Securities Available For Sale Realized Gain Loss
DebtSecuritiesAvailableForSaleRealizedGainLoss
|
-4384000 | USD |
CY2020 | us-gaap |
Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
|
1884000 | USD |
CY2020 | us-gaap |
Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
|
4296000 | USD |
CY2020 | us-gaap |
Debt Securities Available For Sale Realized Gain Loss
DebtSecuritiesAvailableForSaleRealizedGainLoss
|
-2412000 | USD |
CY2019 | us-gaap |
Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
|
2413000 | USD |
CY2019 | us-gaap |
Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
|
1066000 | USD |
CY2019 | us-gaap |
Debt Securities Available For Sale Realized Gain Loss
DebtSecuritiesAvailableForSaleRealizedGainLoss
|
1347000 | USD |
CY2021 | us-gaap |
Equity Securities Fv Ni Realized Gain
EquitySecuritiesFvNiRealizedGain
|
64061000 | USD |
CY2021 | us-gaap |
Equity Securities Fv Ni Realized Loss
EquitySecuritiesFvNiRealizedLoss
|
18826000 | USD |
CY2021 | us-gaap |
Equity Securities Fv Ni Realized Gain Loss
EquitySecuritiesFvNiRealizedGainLoss
|
45235000 | USD |
CY2020 | us-gaap |
Equity Securities Fv Ni Realized Gain
EquitySecuritiesFvNiRealizedGain
|
75591000 | USD |
CY2020 | us-gaap |
Equity Securities Fv Ni Realized Loss
EquitySecuritiesFvNiRealizedLoss
|
80134000 | USD |
CY2020 | us-gaap |
Equity Securities Fv Ni Realized Gain Loss
EquitySecuritiesFvNiRealizedGainLoss
|
-4543000 | USD |
CY2019 | us-gaap |
Equity Securities Fv Ni Realized Gain
EquitySecuritiesFvNiRealizedGain
|
47411000 | USD |
CY2019 | us-gaap |
Equity Securities Fv Ni Realized Loss
EquitySecuritiesFvNiRealizedLoss
|
28089000 | USD |
CY2019 | us-gaap |
Equity Securities Fv Ni Realized Gain Loss
EquitySecuritiesFvNiRealizedGainLoss
|
19322000 | USD |
CY2021 | mcy |
Shortterm Investments Realized Gain
ShorttermInvestmentsRealizedGain
|
236000 | USD |
CY2021 | mcy |
Shortterm Investments Realized Loss
ShorttermInvestmentsRealizedLoss
|
381000 | USD |
CY2021 | mcy |
Shortterm Investments Realized Gain Loss
ShorttermInvestmentsRealizedGainLoss
|
-145000 | USD |
CY2020 | mcy |
Shortterm Investments Realized Gain
ShorttermInvestmentsRealizedGain
|
146000 | USD |
CY2020 | mcy |
Shortterm Investments Realized Gain Loss
ShorttermInvestmentsRealizedGainLoss
|
-2292000 | USD |
CY2019 | mcy |
Shortterm Investments Realized Gain
ShorttermInvestmentsRealizedGain
|
177000 | USD |
CY2019 | mcy |
Shortterm Investments Realized Loss
ShorttermInvestmentsRealizedLoss
|
2133000 | USD |
CY2019 | mcy |
Shortterm Investments Realized Gain Loss
ShorttermInvestmentsRealizedGainLoss
|
-1956000 | USD |
CY2021Q4 | mcy |
Trading Securities Debt Maturities Within One Year Fair Value
TradingSecuritiesDebtMaturitiesWithinOneYearFairValue
|
403269000 | USD |
CY2021Q4 | mcy |
Trading Securities Debt Maturities After One Through Five Years Fair Value
TradingSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue
|
791879000 | USD |
CY2021Q4 | mcy |
Trading Securities Debt Maturities After Five Through Ten Years Fair Value
TradingSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue
|
806813000 | USD |
CY2021Q4 | mcy |
Trading Securities Debt Maturities After Ten Years Fair Value
TradingSecuritiesDebtMaturitiesAfterTenYearsFairValue
|
2029562000 | USD |
CY2021Q4 | us-gaap |
Trading Securities Debt
TradingSecuritiesDebt
|
4031523000 | USD |
CY2021 | us-gaap |
Net Investment Income
NetInvestmentIncome
|
136124000 | USD |
CY2020 | us-gaap |
Net Investment Income
NetInvestmentIncome
|
140586000 | USD |
CY2019 | us-gaap |
Net Investment Income
NetInvestmentIncome
|
146868000 | USD |
CY2021 | us-gaap |
Investment Income Investment Expense
InvestmentIncomeInvestmentExpense
|
6397000 | USD |
CY2020 | us-gaap |
Investment Income Investment Expense
InvestmentIncomeInvestmentExpense
|
5728000 | USD |
CY2019 | us-gaap |
Investment Income Investment Expense
InvestmentIncomeInvestmentExpense
|
5605000 | USD |
CY2021 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
129727000 | USD |
CY2020 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
134858000 | USD |
CY2019 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
141263000 | USD |
CY2021 | mcy |
Percentage Of Unadjusted Fair Value Obtained
PercentageOfUnadjustedFairValueObtained
|
0.979 | |
CY2020 | mcy |
Number Of Knowledgeable Outside Security Brokers Consulted To Determine Fair Value Minimum
NumberOfKnowledgeableOutsideSecurityBrokersConsultedToDetermineFairValueMinimum
|
1 | broker |
CY2021Q4 | mcy |
Three Private Equity Funds Using Nav
ThreePrivateEquityFundsUsingNAV
|
107700000 | USD |
CY2021Q4 | mcy |
One Private Equity Fund Using Nav
OnePrivateEquityFundUsingNAV
|
700000 | USD |
CY2021 | mcy |
Fair Value Assets Level1 To Level2 To Level3 Transfers Amount
FairValueAssetsLevel1ToLevel2ToLevel3TransfersAmount
|
0 | USD |
CY2020 | mcy |
Fair Value Assets Level1 To Level2 To Level3 Transfers Amount
FairValueAssetsLevel1ToLevel2ToLevel3TransfersAmount
|
0 | USD |
CY2021 | us-gaap |
Sublease Income
SubleaseIncome
|
11000 | USD |
CY2021Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
500329000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
464946000 | USD |
CY2021Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
308997000 | USD |
CY2020Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
286023000 | USD |
CY2021Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
191332000 | USD |
CY2020Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
178923000 | USD |
CY2021 | us-gaap |
Depreciation
Depreciation
|
32500000 | USD |
CY2020 | us-gaap |
Depreciation
Depreciation
|
28000000 | USD |
CY2019 | us-gaap |
Depreciation
Depreciation
|
23200000 | USD |
CY2021 | us-gaap |
Deferred Policy Acquisition Costs Text Block1
DeferredPolicyAcquisitionCostsTextBlock1
|
Deferred Policy Acquisition Costs<div style="margin-top:6pt;text-align:justify;text-indent:27pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Deferred policy acquisition costs were as follows:</span></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:88.742%"><tr><td style="width:1.0%"/><td style="width:54.254%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:13.232%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.623%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:13.232%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.623%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:13.236%"/><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="15" 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%">December 31,</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%">2021</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-bottom:1pt solid #000000;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%">2020</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-bottom:1pt solid #000000;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%">2019</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="15" 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%">(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:10pt;font-weight:400;line-height:100%">Balance, beginning of year</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:10pt;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:10pt;font-weight:400;line-height:100%">246,994 </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:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">233,166 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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:10pt;font-weight:400;line-height:100%">215,131 </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:10pt;font-weight:400;line-height:100%">Policy acquisition costs deferred</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:10pt;font-weight:400;line-height:100%">644,650 </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:10pt;font-weight:400;line-height:100%">641,616 </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:10pt;font-weight:400;line-height:100%">620,120 </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:10pt;font-weight:400;line-height:100%">Amortization</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:10pt;font-weight:400;line-height:100%">(633,385)</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:10pt;font-weight:400;line-height:100%">(627,788)</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:10pt;font-weight:400;line-height:100%">(602,085)</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:10pt;font-weight:400;line-height:100%">Balance, end of year</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:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">258,259 </span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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:10pt;font-weight:400;line-height:100%">246,994 </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:10pt;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:10pt;font-weight:400;line-height:100%">233,166 </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> | |
CY2020Q4 | us-gaap |
Deferred Policy Acquisition Costs And Value Of Business Acquired
DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
|
246994000 | USD |
CY2019Q4 | us-gaap |
Deferred Policy Acquisition Costs And Value Of Business Acquired
DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
|
233166000 | USD |
CY2018Q4 | us-gaap |
Deferred Policy Acquisition Costs And Value Of Business Acquired
DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
|
215131000 | USD |
CY2021 | us-gaap |
Deferred Policy Acquisition Costs And Present Value Of Future Profits Additions
DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions
|
644650000 | USD |
CY2020 | us-gaap |
Deferred Policy Acquisition Costs And Present Value Of Future Profits Additions
DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions
|
641616000 | USD |
CY2019 | us-gaap |
Deferred Policy Acquisition Costs And Present Value Of Future Profits Additions
DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAdditions
|
620120000 | USD |
CY2021 | us-gaap |
Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1
DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1
|
633385000 | USD |
CY2020 | us-gaap |
Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1
DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1
|
627788000 | USD |
CY2019 | us-gaap |
Deferred Policy Acquisition Costs And Present Value Of Future Profits Amortization1
DeferredPolicyAcquisitionCostsAndPresentValueOfFutureProfitsAmortization1
|
602085000 | USD |
CY2021Q4 | us-gaap |
Deferred Policy Acquisition Costs And Value Of Business Acquired
DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
|
258259000 | USD |
CY2020Q4 | us-gaap |
Deferred Policy Acquisition Costs And Value Of Business Acquired
DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
|
246994000 | USD |
CY2019Q4 | us-gaap |
Deferred Policy Acquisition Costs And Value Of Business Acquired
DeferredPolicyAcquisitionCostsAndValueOfBusinessAcquired
|
233166000 | USD |
CY2021 | us-gaap |
Operating Lease Cost
OperatingLeaseCost
|
15846000 | USD |
CY2020 | us-gaap |
Operating Lease Cost
OperatingLeaseCost
|
15814000 | USD |
CY2019 | us-gaap |
Operating Lease Cost
OperatingLeaseCost
|
15146000 | USD |
CY2021 | us-gaap |
Finance Lease Right Of Use Asset Amortization
FinanceLeaseRightOfUseAssetAmortization
|
719000 | USD |
CY2020 | us-gaap |
Finance Lease Right Of Use Asset Amortization
FinanceLeaseRightOfUseAssetAmortization
|
338000 | USD |
CY2019 | us-gaap |
Finance Lease Right Of Use Asset Amortization
FinanceLeaseRightOfUseAssetAmortization
|
0 | USD |
CY2021 | us-gaap |
Finance Lease Interest Expense
FinanceLeaseInterestExpense
|
25000 | USD |
CY2020 | us-gaap |
Finance Lease Interest Expense
FinanceLeaseInterestExpense
|
13000 | USD |
CY2019 | us-gaap |
Finance Lease Interest Expense
FinanceLeaseInterestExpense
|
0 | USD |
CY2021 | us-gaap |
Variable Lease Cost
VariableLeaseCost
|
1500000 | USD |
CY2020 | us-gaap |
Variable Lease Cost
VariableLeaseCost
|
1697000 | USD |
CY2019 | us-gaap |
Variable Lease Cost
VariableLeaseCost
|
2196000 | USD |
CY2020 | us-gaap |
Sublease Income
SubleaseIncome
|
0 | USD |
CY2019 | us-gaap |
Sublease Income
SubleaseIncome
|
0 | USD |
CY2021 | us-gaap |
Lease Cost
LeaseCost
|
18079000 | USD |
CY2020 | us-gaap |
Lease Cost
LeaseCost
|
17862000 | USD |
CY2019 | us-gaap |
Lease Cost
LeaseCost
|
17342000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
31967000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
40554000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
34577000 | USD |
CY2020Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
43825000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
|
3503000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
|
3107000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
3126000 | USD |
CY2020 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
609000 | USD |
CY2020Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
2836000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P3Y2M12D | |
CY2020Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P3Y9M18D | |
CY2021Q4 | us-gaap |
Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
|
P4Y2M12D | |
CY2020Q4 | us-gaap |
Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
|
P5Y1M6D | |
CY2021Q4 | us-gaap |
Lessee Operating Lease Discount Rate
LesseeOperatingLeaseDiscountRate
|
0.0278 | |
CY2020Q4 | us-gaap |
Lessee Operating Lease Discount Rate
LesseeOperatingLeaseDiscountRate
|
0.0282 | |
CY2021Q4 | us-gaap |
Lessee Finance Lease Discount Rate
LesseeFinanceLeaseDiscountRate
|
0.0097 | |
CY2020Q4 | us-gaap |
Lessee Finance Lease Discount Rate
LesseeFinanceLeaseDiscountRate
|
0.0082 | |
CY2021 | us-gaap |
Operating Lease Payments
OperatingLeasePayments
|
16158000 | USD |
CY2020 | us-gaap |
Operating Lease Payments
OperatingLeasePayments
|
15539000 | USD |
CY2019 | us-gaap |
Operating Lease Payments
OperatingLeasePayments
|
14289000 | USD |
CY2021 | us-gaap |
Finance Lease Interest Payment On Liability
FinanceLeaseInterestPaymentOnLiability
|
25000 | USD |
CY2020 | us-gaap |
Finance Lease Interest Payment On Liability
FinanceLeaseInterestPaymentOnLiability
|
13000 | USD |
CY2019 | us-gaap |
Finance Lease Interest Payment On Liability
FinanceLeaseInterestPaymentOnLiability
|
0 | USD |
CY2021 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
825000 | USD |
CY2019 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
0 | USD |
CY2021 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
4904000 | USD |
CY2020 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
8673000 | USD |
CY2019 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
15372000 | USD |
CY2021 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
1115000 | USD |
CY2020 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
3047000 | USD |
CY2019 | us-gaap |
Right Of Use Asset Obtained In Exchange For Finance Lease Liability
RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability
|
0 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
|
14846000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Next Twelve Months
FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
|
850000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
|
9795000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Two
FinanceLeaseLiabilityPaymentsDueYearTwo
|
850000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
|
5615000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Three
FinanceLeaseLiabilityPaymentsDueYearThree
|
850000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
|
3161000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Four
FinanceLeaseLiabilityPaymentsDueYearFour
|
627000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
|
1794000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due Year Five
FinanceLeaseLiabilityPaymentsDueYearFive
|
0 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
|
1190000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due After Year Five
FinanceLeaseLiabilityPaymentsDueAfterYearFive
|
0 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
|
36401000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Payments Due
FinanceLeaseLiabilityPaymentsDue
|
3177000 | USD |
CY2021Q4 | us-gaap |
Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
|
1824000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability Undiscounted Excess Amount
FinanceLeaseLiabilityUndiscountedExcessAmount
|
51000 | USD |
CY2021Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
34577000 | USD |
CY2021Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
3126000 | USD |
CY2021Q4 | mcy |
Lessee Operating Lease Lease Not Yet Commenced Amount
LesseeOperatingLeaseLeaseNotYetCommencedAmount
|
6000000 | USD |
CY2021Q4 | mcy |
Notes Payable Principal
NotesPayablePrincipal
|
375000000 | USD |
CY2020Q4 | mcy |
Notes Payable Principal
NotesPayablePrincipal
|
375000000 | USD |
CY2021Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net
DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
|
2069000 | USD |
CY2020Q4 | us-gaap |
Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net
DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
|
2468000 | USD |
CY2021Q4 | us-gaap |
Notes Payable
NotesPayable
|
372931000 | USD |
CY2020Q4 | us-gaap |
Notes Payable
NotesPayable
|
372532000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
|
0 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
|
0 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
|
0 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
|
0 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
|
0 | USD |
CY2021Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal After Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
|
375000000 | USD |
CY2021Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
375000000 | USD |
CY2020 | us-gaap |
Goodwill Period Increase Decrease
GoodwillPeriodIncreaseDecrease
|
0 | USD |
CY2021 | us-gaap |
Goodwill Period Increase Decrease
GoodwillPeriodIncreaseDecrease
|
0 | USD |
CY2021Q4 | us-gaap |
Goodwill Impaired Accumulated Impairment Loss
GoodwillImpairedAccumulatedImpairmentLoss
|
0 | USD |
CY2020Q4 | us-gaap |
Goodwill Impaired Accumulated Impairment Loss
GoodwillImpairedAccumulatedImpairmentLoss
|
0 | 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 |
CY2020Q4 | us-gaap |
Intangible Assets Gross Excluding Goodwill
IntangibleAssetsGrossExcludingGoodwill
|
75962000 | USD |
CY2020Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
64640000 | USD |
CY2020Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
11322000 | USD |
CY2021 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
1100000 | USD |
CY2020 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
1000000 | USD |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
5100000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
1043000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
|
879000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
|
851000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
|
807000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
|
807000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense After Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
|
4468000 | USD |
CY2021Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
8855000 | USD |
CY2021 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
37391000 | USD |
CY2020 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
69554000 | USD |
CY2019 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
18109000 | USD |
CY2021 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
11349000 | USD |
CY2020 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
12340000 | USD |
CY2019 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
40413000 | USD |
CY2021 | us-gaap |
Federal Income Tax Expense Benefit Continuing Operations
FederalIncomeTaxExpenseBenefitContinuingOperations
|
48740000 | USD |
CY2020 | us-gaap |
Federal Income Tax Expense Benefit Continuing Operations
FederalIncomeTaxExpenseBenefitContinuingOperations
|
81894000 | USD |
CY2019 | us-gaap |
Federal Income Tax Expense Benefit Continuing Operations
FederalIncomeTaxExpenseBenefitContinuingOperations
|
58522000 | USD |
CY2021 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
1542000 | USD |
CY2020 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
1172000 | USD |
CY2019 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
-1430000 | USD |
CY2021 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
1088000 | USD |
CY2020 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
828000 | USD |
CY2019 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
890000 | USD |
CY2021 | us-gaap |
State And Local Income Tax Expense Benefit Continuing Operations
StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
|
2630000 | USD |
CY2020 | us-gaap |
State And Local Income Tax Expense Benefit Continuing Operations
StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
|
2000000 | USD |
CY2019 | us-gaap |
State And Local Income Tax Expense Benefit Continuing Operations
StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
|
-540000 | USD |
CY2021 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
38933000 | USD |
CY2020 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
70726000 | USD |
CY2019 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
16679000 | USD |
CY2021 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
12437000 | USD |
CY2020 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
13168000 | USD |
CY2019 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
41303000 | USD |
CY2021 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
51370000 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
83894000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
57982000 | USD |
CY2018 | mcy |
Tax Cutsand Jobs Act Changein Tax Rate Deferred Tax Liability Income Tax Benefit
TaxCutsandJobsActChangeinTaxRateDeferredTaxLiabilityIncomeTaxBenefit
|
8600000 | USD |
CY2021 | mcy |
Tax Cutsand Jobs Act Changein Tax Rate Deferred Tax Liability Income Tax Benefit
TaxCutsandJobsActChangeinTaxRateDeferredTaxLiabilityIncomeTaxBenefit
|
4400000 | USD |
CY2020 | mcy |
Tax Cutsand Jobs Act Changein Tax Rate Deferred Tax Liability Income Tax Benefit
TaxCutsandJobsActChangeinTaxRateDeferredTaxLiabilityIncomeTaxBenefit
|
5600000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
62854000 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
96285000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
79394000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation Tax Exempt Income
IncomeTaxReconciliationTaxExemptIncome
|
11577000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
41132000 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation Tax Exempt Income
IncomeTaxReconciliationTaxExemptIncome
|
12270000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Tax Exempt Income
IncomeTaxReconciliationTaxExemptIncome
|
12909000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation Deductions Dividends
IncomeTaxReconciliationDeductionsDividends
|
1311000 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation Deductions Dividends
IncomeTaxReconciliationDeductionsDividends
|
1335000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Deductions Dividends
IncomeTaxReconciliationDeductionsDividends
|
1276000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
2134000 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
1678000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-869000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
843000 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
983000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
526000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation Tax Contingencies Domestic
IncomeTaxReconciliationTaxContingenciesDomestic
|
0 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation Tax Contingencies Domestic
IncomeTaxReconciliationTaxContingenciesDomestic
|
0 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Tax Contingencies Domestic
IncomeTaxReconciliationTaxContingenciesDomestic
|
-2588000 | USD |
CY2021 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-1573000 | USD |
CY2020 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-1447000 | USD |
CY2019 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-4296000 | USD |
CY2021 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
51370000 | USD |
CY2020 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
83894000 | USD |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
57982000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve
|
65978000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Unearned Premiums Reserve
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve
|
61067000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves
|
18163000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves
|
15090000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses
|
168000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses
|
293000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves
|
12997000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves
DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves
|
14432000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
5886000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Other
DeferredTaxAssetsOther
|
6401000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
103192000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
97283000 | USD |
CY2021Q4 | mcy |
Deferred Tax Liabilities Acquisition Costs
DeferredTaxLiabilitiesAcquisitionCosts
|
54234000 | USD |
CY2020Q4 | mcy |
Deferred Tax Liabilities Acquisition Costs
DeferredTaxLiabilitiesAcquisitionCosts
|
51869000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities Unrealized Gains On Trading Securities
DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities
|
70808000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Unrealized Gains On Trading Securities
DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities
|
56531000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
10129000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
12632000 | USD |
CY2021Q4 | mcy |
Deferred Tax Liabilities Undistributed Insurance Subsidiaries
DeferredTaxLiabilitiesUndistributedInsuranceSubsidiaries
|
3557000 | USD |
CY2020Q4 | mcy |
Deferred Tax Liabilities Undistributed Insurance Subsidiaries
DeferredTaxLiabilitiesUndistributedInsuranceSubsidiaries
|
3382000 | USD |
CY2021Q4 | mcy |
Deferred Tax Liabilities Tax Amortization In Excess Of Book Amortization
DeferredTaxLiabilitiesTaxAmortizationInExcessOfBookAmortization
|
6064000 | USD |
CY2020Q4 | mcy |
Deferred Tax Liabilities Tax Amortization In Excess Of Book Amortization
DeferredTaxLiabilitiesTaxAmortizationInExcessOfBookAmortization
|
4666000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
11969000 | USD |
CY2020Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
9335000 | USD |
CY2021Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
156761000 | USD |
CY2020Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
138415000 | USD |
CY2021Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
53569000 | USD |
CY2021 | us-gaap |
Unrecognized Tax Benefits Period Increase Decrease
UnrecognizedTaxBenefitsPeriodIncreaseDecrease
|
-300000 | USD |
CY2020Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
4634000 | USD |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
6051000 | USD |
CY2021 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
CY2020 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
0 | USD |
CY2021 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
254000 | USD |
CY2020 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
1417000 | USD |
CY2021Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
4380000 | USD |
CY2020Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
4634000 | USD |
CY2021Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
6200000 | USD |
CY2021 | us-gaap |
Income Tax Examination Penalties And Interest Expense
IncomeTaxExaminationPenaltiesAndInterestExpense
|
300000 | USD |
CY2020 | us-gaap |
Income Tax Examination Penalties And Interest Expense
IncomeTaxExaminationPenaltiesAndInterestExpense
|
200000 | USD |
CY2019 | us-gaap |
Income Tax Examination Penalties And Interest Expense
IncomeTaxExaminationPenaltiesAndInterestExpense
|
-100000 | USD |
CY2021Q4 | us-gaap |
Income Tax Examination Penalties And Interest Accrued
IncomeTaxExaminationPenaltiesAndInterestAccrued
|
3300000 | USD |
CY2020Q4 | us-gaap |
Income Tax Examination Penalties And Interest Accrued
IncomeTaxExaminationPenaltiesAndInterestAccrued
|
3100000 | USD |
CY2021 | us-gaap |
Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense
ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense
|
<div style="margin-top:6pt;text-align:justify;text-indent:27pt"><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:11pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.853%"><tr><td style="width:1.0%"/><td style="width:59.222%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.637%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.532%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.637%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.532%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.640%"/><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="15" 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%">Year Ended December 31,</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%">2021</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-bottom:1pt solid #000000;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%">2020</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-bottom:1pt solid #000000;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%">2019</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="15" 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%">(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:10pt;font-weight:400;line-height:100%">Gross reserves at January 1</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:10pt;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:10pt;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"/><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:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,921,255 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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:10pt;font-weight:400;line-height:100%">1,829,412 </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;text-indent:-4.5pt;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Reinsurance recoverables on unpaid losses</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:10pt;font-weight:400;line-height:100%">(54,461)</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:10pt;font-weight:400;line-height:100%">(76,100)</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:10pt;font-weight:400;line-height:100%">(180,859)</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:justify;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> Cumulative effect of adopting ASU 2016-13 </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:10pt;font-weight:400;line-height:100%">— </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:10pt;font-weight:400;line-height:100%">149 </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:10pt;font-weight:400;line-height:100%">— </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;text-indent:-4.5pt;vertical-align:top"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Reinsurance recoverables on unpaid losses, as adjusted</span></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(54,461)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(75,951)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(180,859)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;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:10pt;font-weight:400;line-height:100%">Net reserves at January 1, as adjusted</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,936,843 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,845,304 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,648,553 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000;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:10pt;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 #000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000;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:10pt;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:10pt;font-weight:400;line-height:100%">2,786,246 </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:10pt;font-weight:400;line-height:100%">2,372,364 </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:10pt;font-weight:400;line-height:100%">2,696,230 </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:10pt;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:10pt;font-weight:400;line-height:100%">(26,091)</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:10pt;font-weight:400;line-height:100%">22,979 </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:10pt;font-weight:400;line-height:100%">9,794 </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:10pt;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:10pt;font-weight:400;line-height:100%">2,760,155 </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:10pt;font-weight:400;line-height:100%">2,395,343 </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:10pt;font-weight:400;line-height:100%">2,706,024 </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:10pt;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"/><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:10pt;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:10pt;font-weight:400;line-height:100%">1,601,998 </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:10pt;font-weight:400;line-height:100%">1,366,661 </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:10pt;font-weight:400;line-height:100%">1,651,550 </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:10pt;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:10pt;font-weight:400;line-height:100%">909,949 </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:10pt;font-weight:400;line-height:100%">937,143 </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:10pt;font-weight:400;line-height:100%">857,872 </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:10pt;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:10pt;font-weight:400;line-height:100%">2,511,947 </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:10pt;font-weight:400;line-height:100%">2,303,804 </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:10pt;font-weight:400;line-height:100%">2,509,422 </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:10pt;font-weight:400;line-height:100%">Net reserves at December 31</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:10pt;font-weight:400;line-height:100%">2,185,051 </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:10pt;font-weight:400;line-height:100%">1,936,843 </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:10pt;font-weight:400;line-height:100%">1,845,155 </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:10pt;font-weight:400;line-height:100%">Reinsurance recoverables on unpaid losses</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:10pt;font-weight:400;line-height:100%">41,379 </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:10pt;font-weight:400;line-height:100%">54,461 </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:10pt;font-weight:400;line-height:100%">76,100 </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:10pt;font-weight:400;line-height:100%">Gross reserves at December 31</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:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">2,226,430 </span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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:10pt;font-weight:400;line-height:100%">1,991,304 </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:10pt;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:10pt;font-weight:400;line-height:100%">1,921,255 </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> | |
CY2020Q4 | us-gaap |
Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
|
1991304000 | USD |
CY2019Q4 | us-gaap |
Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
|
1921255000 | USD |
CY2018Q4 | us-gaap |
Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
|
1829412000 | USD |
CY2020Q4 | mcy |
Reissuance Recoverable
ReissuanceRecoverable
|
54461000 | USD |
CY2019Q4 | mcy |
Reissuance Recoverable
ReissuanceRecoverable
|
76100000 | USD |
CY2018Q4 | mcy |
Reissuance Recoverable
ReissuanceRecoverable
|
180859000 | USD |
CY2020Q4 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Net
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
|
1936843000 | USD |
CY2018Q4 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Net
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
|
1648553000 | USD |
CY2021 | us-gaap |
Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense
SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
|
2786246000 | USD |
CY2020 | us-gaap |
Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense
SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
|
2372364000 | USD |
CY2019 | us-gaap |
Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense
SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
|
2696230000 | USD |
CY2021 | us-gaap |
Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense
SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
|
-26091000 | USD |
CY2020 | us-gaap |
Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense
SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
|
22979000 | USD |
CY2019 | us-gaap |
Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense
SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
|
9794000 | USD |
CY2021 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
|
2760155000 | USD |
CY2020 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
|
2395343000 | USD |
CY2019 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
|
2706024000 | USD |
CY2021 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1
|
1601998000 | USD |
CY2020 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1
|
1366661000 | USD |
CY2019 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1
|
1651550000 | USD |
CY2021 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1
|
909949000 | USD |
CY2020 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1
|
937143000 | USD |
CY2019 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1
|
857872000 | USD |
CY2021 | us-gaap |
Payments For Losses And Loss Adjustment Expense
PaymentsForLossesAndLossAdjustmentExpense
|
2511947000 | USD |
CY2020 | us-gaap |
Payments For Losses And Loss Adjustment Expense
PaymentsForLossesAndLossAdjustmentExpense
|
2303804000 | USD |
CY2019 | us-gaap |
Payments For Losses And Loss Adjustment Expense
PaymentsForLossesAndLossAdjustmentExpense
|
2509422000 | USD |
CY2021Q4 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Net
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
|
2185051000 | USD |
CY2020Q4 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Net
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
|
1936843000 | USD |
CY2019Q4 | us-gaap |
Liability For Unpaid Claims And Claims Adjustment Expense Net
LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
|
1845155000 | USD |
CY2021Q4 | mcy |
Reissuance Recoverable
ReissuanceRecoverable
|
41379000 | USD |
CY2020Q4 | mcy |
Reissuance Recoverable
ReissuanceRecoverable
|
54461000 | USD |
CY2019Q4 | mcy |
Reissuance Recoverable
ReissuanceRecoverable
|
76100000 | USD |
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 |
CY2019Q4 | us-gaap |
Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
|
1921255000 | USD |
CY2021Q4 | us-gaap |
Shortduration Insurance Contracts Liability For Unpaid Claims And Allocated Claim Adjustment Expense Net
ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet
|
2059835000 | USD |
CY2021Q4 | us-gaap |
Reinsurance Recoverable For Unpaid Claims And Claims Adjustments
ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments
|
41379000 | USD |
CY2021Q4 | us-gaap |
Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item
ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem
|
706000 | USD |
CY2021Q4 | us-gaap |
Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense
ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense
|
124510000 | USD |
CY2021Q4 | us-gaap |
Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Aggregate Reconciling Items
ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems
|
125216000 | USD |
CY2021Q4 | us-gaap |
Liability For Claims And Claims Adjustment Expense
LiabilityForClaimsAndClaimsAdjustmentExpense
|
2226430000 | USD |
CY2021 | us-gaap |
Payments Of Dividends
PaymentsOfDividends
|
140226000 | USD |
CY2020 | us-gaap |
Payments Of Dividends
PaymentsOfDividends
|
139640000 | USD |
CY2019 | us-gaap |
Payments Of Dividends
PaymentsOfDividends
|
139071000 | USD |
CY2021 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
2.5325 | |
CY2020 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
2.5225 | |
CY2019 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
2.5125 | |
CY2021Q4 | us-gaap |
Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval
StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
|
252000000 | USD |
CY2021 | us-gaap |
Payments Of Ordinary Dividends
PaymentsOfOrdinaryDividends
|
191000000 | USD |
CY2020 | us-gaap |
Payments Of Ordinary Dividends
PaymentsOfOrdinaryDividends
|
121000000 | USD |
CY2019 | us-gaap |
Payments Of Ordinary Dividends
PaymentsOfOrdinaryDividends
|
114000000 | USD |
CY2021 | us-gaap |
Statutory Accounting Practices Statutory Net Income Amount
StatutoryAccountingPracticesStatutoryNetIncomeAmount
|
200488000 | USD |
CY2020 | us-gaap |
Statutory Accounting Practices Statutory Net Income Amount
StatutoryAccountingPracticesStatutoryNetIncomeAmount
|
283928000 | USD |
CY2019 | us-gaap |
Statutory Accounting Practices Statutory Net Income Amount
StatutoryAccountingPracticesStatutoryNetIncomeAmount
|
135670000 | USD |
CY2021Q4 | us-gaap |
Statutory Accounting Practices Statutory Capital And Surplus Balance
StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
|
1827210000 | USD |
CY2020Q4 | us-gaap |
Statutory Accounting Practices Statutory Capital And Surplus Balance
StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
|
1768103000 | USD |
CY2019Q4 | us-gaap |
Statutory Accounting Practices Statutory Capital And Surplus Balance
StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
|
1539998000 | USD |
CY2021Q4 | us-gaap |
Tier One Risk Based Capital To Risk Weighted Assets
TierOneRiskBasedCapitalToRiskWeightedAssets
|
4 | |
CY2019Q4 | us-gaap |
Tier One Risk Based Capital To Risk Weighted Assets
TierOneRiskBasedCapitalToRiskWeightedAssets
|
4 | |
CY2020Q4 | us-gaap |
Tier One Risk Based Capital To Risk Weighted Assets
TierOneRiskBasedCapitalToRiskWeightedAssets
|
3.50 | |
CY2019Q4 | us-gaap |
Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets
TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
|
2 | |
CY2021Q4 | us-gaap |
Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets
TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
|
2 | |
CY2020Q4 | us-gaap |
Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets
TierOneRiskBasedCapitalRequiredForCapitalAdequacyToRiskWeightedAssets
|
2 | |
CY2021 | mcy |
Maximum Percentage Of Compensation Employee Is Allowed To Contribute
MaximumPercentageOfCompensationEmployeeIsAllowedToContribute
|
0.15 | |
CY2021 | us-gaap |
Deferred Compensation Arrangement With Individual Contributions By Employer
DeferredCompensationArrangementWithIndividualContributionsByEmployer
|
10400000 | USD |
CY2020 | us-gaap |
Deferred Compensation Arrangement With Individual Contributions By Employer
DeferredCompensationArrangementWithIndividualContributionsByEmployer
|
11200000 | USD |
CY2019 | us-gaap |
Deferred Compensation Arrangement With Individual Contributions By Employer
DeferredCompensationArrangementWithIndividualContributionsByEmployer
|
9900000 | USD |
CY2021 | mcy |
Individual Employees Bonus Expense Cash
IndividualEmployeesBonusExpenseCash
|
36900000 | USD |
CY2020 | mcy |
Individual Employees Bonus Expense Cash
IndividualEmployeesBonusExpenseCash
|
11600000 | USD |
CY2021 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
215000 | USD |
CY2020 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
0 | USD |
CY2019 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
701000 | USD |
CY2021 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
141000 | USD |
CY2020 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
142000 | USD |
CY2019 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
123000 | USD |
CY2021 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
117000 | USD |
CY2020 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
0 | USD |
CY2019 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
7000 | USD |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
67500 | shares |
CY2020Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
43.01 | |
CY2021 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
47500 | shares |
CY2021 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
|
43.01 | |
CY2021 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
|
0 | shares |
CY2021 | us-gaap |
Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
|
0 | |
CY2021Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
|
20000 | shares |
CY2021Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
|
43.01 | |
CY2021 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
|
P6Y1M6D | |
CY2021Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
|
201000 | USD |
CY2021Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
|
2500 | shares |
CY2021Q4 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
|
43.01 | |
CY2021 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
|
P6Y1M6D | |
CY2021Q4 | us-gaap |
Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
|
25000 | USD |
CY2021 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
1007175 | USD |
CY2019 | us-gaap |
Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
|
217064 | USD |
CY2020 | us-gaap |
Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
|
0 | shares |
CY2019 | mcy |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue
|
141584 | USD |
CY2020 | mcy |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue
|
141584 | USD |
CY2021 | mcy |
Share Based Compensation Arrangement By Share Based Payment Award Options Vested In Period Total Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedInPeriodTotalFairValue
|
141584 | USD |
CY2021 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
247937000 | USD |
CY2021 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
55368000 | shares |
CY2021 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.48 | |
CY2020 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
374607000 | USD |
CY2020 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
55358000 | shares |
CY2020 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
6.77 | |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
320087000 | USD |
CY2019 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
55351000 | shares |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
5.78 | |
CY2021 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
247937000 | USD |
CY2021 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
55374000 | shares |
CY2021 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.48 | |
CY2020 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
374607000 | USD |
CY2020 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
55358000 | shares |
CY2020 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
6.77 | |
CY2019 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
320087000 | USD |
CY2019 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
55360000 | shares |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
5.78 | |
CY2021 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
0 | shares |
CY2019 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
0 | shares |
CY2021Q2 | mcy |
Catastrophe Claims Maximum Exposure Carrying Amount
CatastropheClaimsMaximumExposureCarryingAmount
|
77100000 | USD |
CY2020 | us-gaap |
Increase Decrease In Unearned Premiums Net
IncreaseDecreaseInUnearnedPremiumsNet
|
128000000 | USD |
CY2021 | mcy |
Number Of Companies
NumberOfCompanies
|
13 | Subsidiary |
CY2021Q4 | us-gaap |
Number Of States In Which Entity Operates
NumberOfStatesInWhichEntityOperates
|
11 | State |
CY2021 | us-gaap |
Number Of Reportable Segments
NumberOfReportableSegments
|
1 | segment |
CY2021 | us-gaap |
Policyholder Benefits And Claims Incurred Net
PolicyholderBenefitsAndClaimsIncurredNet
|
2760200000 | USD |
CY2020 | us-gaap |
Policyholder Benefits And Claims Incurred Net
PolicyholderBenefitsAndClaimsIncurredNet
|
2395300000 | USD |
CY2019 | us-gaap |
Policyholder Benefits And Claims Incurred Net
PolicyholderBenefitsAndClaimsIncurredNet
|
2706000000 | USD |
CY2021 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3741900000 | USD |
CY2020 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3555600000 | USD |
CY2019 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3599400000 | USD |
CY2021 | us-gaap |
Other Underwriting Expense
OtherUnderwritingExpense
|
916700000 | USD |
CY2020 | us-gaap |
Other Underwriting Expense
OtherUnderwritingExpense
|
913700000 | USD |
CY2019 | us-gaap |
Other Underwriting Expense
OtherUnderwritingExpense
|
871400000 | USD |
CY2021 | us-gaap |
Underwriting Income Loss
UnderwritingIncomeLoss
|
65000000.0 | USD |
CY2020 | us-gaap |
Underwriting Income Loss
UnderwritingIncomeLoss
|
246600000 | USD |
CY2019 | us-gaap |
Underwriting Income Loss
UnderwritingIncomeLoss
|
22000000.0 | USD |
CY2021 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
129700000 | USD |
CY2020 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
134900000 | USD |
CY2019 | us-gaap |
Interest And Dividend Income Operating
InterestAndDividendIncomeOperating
|
141300000 | USD |
CY2021 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
111700000 | USD |
CY2020 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
85700000 | USD |
CY2019 | us-gaap |
Realized Investment Gains Losses
RealizedInvestmentGainsLosses
|
222800000 | USD |
CY2021 | us-gaap |
Other Income
OtherIncome
|
10000000.0 | USD |
CY2020 | us-gaap |
Other Income
OtherIncome
|
8300000 | USD |
CY2019 | us-gaap |
Other Income
OtherIncome
|
9000000.0 | USD |
CY2021 | us-gaap |
Interest Expense
InterestExpense
|
17100000 | USD |
CY2021Q4 | us-gaap |
Summary Of Investments Other Than Investments In Related Parties Cost
SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
|
4805522000 | USD |
CY2020 | us-gaap |
Interest Expense
InterestExpense
|
17000000.0 | USD |
CY2019 | us-gaap |
Interest Expense
InterestExpense
|
17000000.0 | USD |
CY2021 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
299300000 | USD |
CY2020 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
458500000 | USD |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
378100000 | USD |
CY2021 | us-gaap |
Net Income Loss
NetIncomeLoss
|
247900000 | USD |
CY2020 | us-gaap |
Net Income Loss
NetIncomeLoss
|
374600000 | USD |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
320100000 | USD |
CY2021 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3741900000 | USD |
CY2020 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3555600000 | USD |
CY2019 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3599400000 | USD |
CY2021 | us-gaap |
Direct Premiums Written
DirectPremiumsWritten
|
3907500000 | USD |
CY2020 | us-gaap |
Direct Premiums Written
DirectPremiumsWritten
|
3654200000 | USD |
CY2019 | us-gaap |
Direct Premiums Written
DirectPremiumsWritten
|
3774600000 | USD |
CY2019 | us-gaap |
Direct Premiums Earned
DirectPremiumsEarned
|
3655233000 | USD |
CY2021Q4 | us-gaap |
Summary Of Investments Other Than Investments In Related Parties Fair Value
SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue
|
5142589000 | USD |
CY2021Q4 | us-gaap |
Summary Of Investments Other Than Investments In Related Parties Carrying Amount
SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
|
5142589000 | USD |
CY2020Q4 | us-gaap |
Summary Of Investments Other Than Investments In Related Parties Cost
SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
|
4460115000 | USD |
CY2020Q4 | us-gaap |
Summary Of Investments Other Than Investments In Related Parties Fair Value
SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue
|
4729270000 | USD |
CY2020Q4 | us-gaap |
Summary Of Investments Other Than Investments In Related Parties Carrying Amount
SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
|
4729270000 | USD |
CY2021 | mcy |
Proceedsfrom Subsidiary Entity Dividendsor Distributions
ProceedsfromSubsidiaryEntityDividendsorDistributions
|
5200000 | USD |
CY2020 | mcy |
Proceedsfrom Subsidiary Entity Dividendsor Distributions
ProceedsfromSubsidiaryEntityDividendsorDistributions
|
12100000 | USD |
CY2019 | mcy |
Proceedsfrom Subsidiary Entity Dividendsor Distributions
ProceedsfromSubsidiaryEntityDividendsorDistributions
|
5200000 | USD |
CY2021 | us-gaap |
Proceeds From Dividends Received
ProceedsFromDividendsReceived
|
191000000 | USD |
CY2020 | us-gaap |
Proceeds From Dividends Received
ProceedsFromDividendsReceived
|
121000000 | USD |
CY2019 | us-gaap |
Proceeds From Dividends Received
ProceedsFromDividendsReceived
|
114431433 | USD |
CY2021 | us-gaap |
Direct Premiums Earned
DirectPremiumsEarned
|
3793664000 | USD |
CY2020 | us-gaap |
Direct Premiums Earned
DirectPremiumsEarned
|
3603780000 | USD |
CY2021 | us-gaap |
Ceded Premiums Earned
CededPremiumsEarned
|
65017000 | USD |
CY2020 | us-gaap |
Ceded Premiums Earned
CededPremiumsEarned
|
56212000 | USD |
CY2019 | us-gaap |
Ceded Premiums Earned
CededPremiumsEarned
|
56725000 | USD |
CY2021 | us-gaap |
Assumed Premiums Earned
AssumedPremiumsEarned
|
13301000 | USD |
CY2020 | us-gaap |
Assumed Premiums Earned
AssumedPremiumsEarned
|
8067000 | USD |
CY2019 | us-gaap |
Assumed Premiums Earned
AssumedPremiumsEarned
|
910000 | USD |
CY2021 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3741948000 | USD |
CY2020 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3555635000 | USD |
CY2019 | us-gaap |
Premiums Earned Net
PremiumsEarnedNet
|
3599418000 | USD |