Note 11 - Losses and LAE Additional Disclosures: Claims Development (Details) $ in Thousands		Dec. 31, 2018 USD ($) payment default	Dec. 31, 2017 USD ($) default	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2009 USD ($)
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		$ 6,299,253
Short-duration Insurance Contracts, Accident Year 2009 | Property, Liability and Casualty Insurance Product Line
Claims Development [Line Items]
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net		2,025,828	$ 2,022,629	$ 2,018,907	$ 2,016,412	$ 1,991,796	$ 1,974,568	$ 1,939,479	$ 1,930,263	$ 1,894,783	$ 1,671,239
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 1,572
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	213,836
Short-duration Insurance Contracts, Accident Year 2010 | Property, Liability and Casualty Insurance Product Line
Claims Development [Line Items]
Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net		$ 1,221,938	1,219,469	1,218,264	1,220,289	1,207,774	1,195,056	1,192,482	1,215,136	$ 1,102,856
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 1,019
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	146,324
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		$ 1,060,376	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	[1]	$ 970
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	118,972
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		$ 713,750	714,783	715,646	720,502	711,213	763,969	$ 803,831
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 586
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	89,845
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		$ 400,243	402,259	404,333	401,444	405,334	$ 505,732
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 344
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	71,749
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		$ 260,098	264,620	265,891	247,074	$ 337,784
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 241
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	58,215
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		$ 183,952	178,042	198,186	$ 222,555
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 292
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	49,825
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		$ 149,753	165,440	$ 201,016
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 428
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	46,264
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		$ 151,802	$ 180,851
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 1,212
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	47,283
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		$ 131,513
Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net	[1]	$ 1,876
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	39,598
Hurricanes Harvey and Irma | Short-duration Insurance Contracts, Accident Year 2017 | Property, Liability and Casualty Insurance Product Line
Claims Development [Line Items]
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]		8,862
Hurricanes Harvey and Irma | Short-duration Insurance Contracts, Accident Year 2018 | Property, Liability and Casualty Insurance Product Line
Claims Development [Line Items]
Short-duration Insurance Contract, Cumulative Number of Reported Claims | default	[2]	3,776

[1] Represents reserves as of December 31, 2018 related to IBNR liabilities.

[2] Represents total number of new default notices received in each calendar year as compiled monthly based on reports received from loan servicers. As reflected in our Default to Claim Rate assumptions, a significant portion of reported defaults generally do not result in a claim. In certain instances, a defaulted loan may cure, and then re-default in a later period. Consistent with our reserving practice, each new event of default is treated as a unique occurrence and therefore certain loans that cure and re-default may be included as a reported default in multiple periods. Included in this amount for the year ended December 31, 2018 and December 31, 2017 are 3,776 and 8,862 notices, respectively, of new primary defaults related to the FEMA Designated Areas associated with Hurricanes Harvey and Irma.