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Note 11 - Losses and LAE - Additional Disclosures: Claims Development (Details) $ in Thousands | Dec. 31, 2020 USD ($) payment default | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($)
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Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Number Of Payments Missed For Insured Loans | payment | 2 |  |  |  |  |  |  |  |  |
Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 3,636,200 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2011 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | 1,062,826 | $ 1,064,054 | $ 1,060,376 | $ 1,059,116 | $ 1,061,161 | $ 1,062,579 | $ 1,050,555 | $ 1,052,277 | $ 1,152,016 | $ 1,058,625
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 578 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 117,019 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2012 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 713,146 | 713,839 | 713,750 | 714,783 | 715,646 | 720,502 | 711,213 | 763,969 | $ 803,831 |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 313 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 88,555 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2013 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 399,317 | 399,356 | 400,243 | 402,259 | 404,333 | 401,444 | 405,334 | $ 505,732 |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 150 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 70,723 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2014 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 261,377 | 261,507 | 260,098 | 264,620 | 265,891 | 247,074 | $ 337,784 |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 73 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 57,541 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2015 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 184,066 | 183,546 | 183,952 | 178,042 | 198,186 | $ 222,555 |  |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 69 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 49,255 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2016 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 148,640 | 148,811 | 149,753 | 165,440 | $ 201,016 |  |  |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 75 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 45,824 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2017 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 130,274 | 133,357 | 151,802 | $ 180,851 |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 144 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 46,956 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2018 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 95,534 | 116,634 | $ 131,513 |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 279 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 39,341 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2019 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 136,860 | $ 143,475 |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 809 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 42,884 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Accident Year 2020 | Property, Liability and Casualty Insurance Product Line |  |  |  |  |  |  |  |  |  |
Claims Development [Line Items] |  |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net | $ 504,160 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net | $ 4,540 |  |  |  |  |  |  |  |  |
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default | 109,411 |  |  |  |  |  |  |  |  |

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- Definition Undiscounted amount, after reinsurance, of incurred-but-not-reported (IBNR) liabilities plus expected development on reported claims, for claims and allocated claim adjustment expense for short-duration insurance contracts. Excludes unallocated claim adjustment expense. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671321-158438 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 4D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116884468&loc=SL65671317-158438 + Details
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