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Note 7 - Unpaid Losses and Settlement Expenses - Short Duration Insurance Contracts, Claims Development (Details)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Incurred claims and allocated claim adjustment expense $ 297,508,000                  
Cumulative paid claims and allocated adjustment expense 243,680,000                  
Unpaid losses and settlement expense, net of reinsurance 54,004,000                  
Short-Duration Insurance Contracts, Accident Year 2013 [Member]                    
Incurred claims and allocated claim adjustment expense 22,456,000 $ 22,419,000 $ 22,351,000 $ 22,348,000 $ 22,140,000 $ 22,167,000 $ 21,375,000 $ 21,459,000 $ 21,861,000 $ 21,850,000
Incurred but not reported $ 20,000                  
Number of reported claims 1,771                  
Cumulative paid claims and allocated adjustment expense $ 22,308,000 22,245,000 22,011,000 21,836,000 21,252,000 20,446,000 18,661,000 15,834,000 12,235,000 8,435,000
Short-Duration Insurance Contracts, Accident Year 2014 [Member]                    
Incurred claims and allocated claim adjustment expense 24,789,000 24,721,000 24,737,000 24,781,000 24,698,000 24,601,000 23,139,000 22,330,000 22,250,000  
Incurred but not reported $ 80,000                  
Number of reported claims 1,953                  
Cumulative paid claims and allocated adjustment expense $ 24,554,000 24,204,000 24,175,000 23,707,000 23,027,000 21,398,000 17,261,000 11,718,000 7,782,000  
Short-Duration Insurance Contracts, Accident Year 2015 [Member]                    
Incurred claims and allocated claim adjustment expense 22,852,000 22,817,000 22,350,000 22,140,000 21,496,000 21,157,000 21,370,000 24,289,000    
Incurred but not reported $ 91,000                  
Number of reported claims 1,649                  
Cumulative paid claims and allocated adjustment expense $ 22,121,000 21,577,000 20,919,000 20,147,000 18,173,000 14,878,000 11,359,000 6,465,000    
Short-Duration Insurance Contracts, Accident Year 2016 [Member]                    
Incurred claims and allocated claim adjustment expense 26,995,000 26,740,000 25,951,000 25,236,000 24,612,000 22,824,000 25,618,000      
Incurred but not reported $ 201,000                  
Number of reported claims 1,617                  
Cumulative paid claims and allocated adjustment expense $ 26,002,000 25,114,000 22,643,000 20,561,000 16,425,000 13,112,000 7,654,000      
Short-Duration Insurance Contracts, Accident Year 2017 [Member]                    
Incurred claims and allocated claim adjustment expense 31,642,000 30,689,000 29,802,000 29,583,000 29,371,000 29,801,000        
Incurred but not reported $ 316,000                  
Number of reported claims 1,757                  
Cumulative paid claims and allocated adjustment expense $ 30,592,000 28,134,000 25,473,000 22,363,000 18,901,000 11,578,000        
Short-Duration Insurance Contracts, Accident Year 2018 [Member]                    
Incurred claims and allocated claim adjustment expense 27,654,000 27,955,000 28,048,000 28,236,000 29,762,000          
Incurred but not reported $ 723,000                  
Number of reported claims 1,853                  
Cumulative paid claims and allocated adjustment expense $ 25,805,000 23,481,000 20,337,000 16,665,000 10,451,000          
Short-Duration Insurance Contract, Accident Year 2019 [Member]                    
Incurred claims and allocated claim adjustment expense 34,442,000 34,551,000 33,958,000 33,563,000            
Incurred but not reported $ 1,820,000                  
Number of reported claims 1,927                  
Cumulative paid claims and allocated adjustment expense $ 29,683,000 26,987,000 21,614,000 15,285,000            
Short-Duration Insurance Contract, Accident Year 2020 [Member]                    
Incurred claims and allocated claim adjustment expense 30,457,000 29,162,000 31,356,000              
Incurred but not reported $ 2,335,000                  
Number of reported claims 1,571                  
Cumulative paid claims and allocated adjustment expense $ 23,566,000 19,367,000 13,055,000              
Short-Duration Insurance Contract, Accident Year 2021 [Member]                    
Incurred claims and allocated claim adjustment expense 36,787,000 33,968,000                
Incurred but not reported $ 6,135,000                  
Number of reported claims 1,579                  
Cumulative paid claims and allocated adjustment expense $ 22,537,000 14,740,000                
Short-Duration Insurance Contract, Accident Year 2022 [Member]                    
Incurred claims and allocated claim adjustment expense 39,434,000                  
Incurred but not reported $ 14,015,000                  
Number of reported claims 1,329                  
Cumulative paid claims and allocated adjustment expense $ 16,512                  
Short -duration Insurance Contracts, Last Ten Years [Member]                    
Unpaid losses and settlement expense - years 2013 through 2022 53,828,000                  
Short-duration Insurance Contracts, Prior Accident Years [Member]                    
Unpaid losses and settlement expense - years 2013 through 2022 176,000                  
Property Insurance [Member]                    
Incurred claims and allocated claim adjustment expense 118,405,000                  
Incurred but not reported $ (810,000)                  
Number of reported claims 683                  
Cumulative paid claims and allocated adjustment expense $ 114,721,000                  
Unpaid losses and settlement expense, net of reinsurance 3,689,000                  
Property Insurance [Member] | Short-Duration Insurance Contracts, Accident Year 2013 [Member]                    
Incurred claims and allocated claim adjustment expense 8,276,000 8,275,000 8,270,000 8,272,000 8,282,000 8,471,000 8,415,000 8,290,000 8,302,000 9,266,000
Incurred but not reported $ 9,000                  
Number of reported claims 626                  
Cumulative paid claims and allocated adjustment expense $ 8,270,000 8,271,000 8,270,000 8,271,000 8,272,000 8,265,000 8,238,000 8,200,000 8,079,000 6,856,000
Property Insurance [Member] | Short-Duration Insurance Contracts, Accident Year 2014 [Member]                    
Incurred claims and allocated claim adjustment expense 7,794,000 7,792,000 7,784,000 7,785,000 7,817,000 7,883,000 7,798,000 7,586,000 8,865,000  
Incurred but not reported $ 0                  
Number of reported claims 740                  
Cumulative paid claims and allocated adjustment expense $ 7,805,000 7,803,000 7,801,000 7,795,000 7,795,000 7,796,000 7,746,000 7,631,000 6,243,000  
Property Insurance [Member] | Short-Duration Insurance Contracts, Accident Year 2015 [Member]                    
Incurred claims and allocated claim adjustment expense 7,642,000 7,635,000 7,636,000 7,654,000 7,634,000 7,717,000 7,494,000 7,693,000    
Incurred but not reported $ 0                  
Number of reported claims 554                  
Cumulative paid claims and allocated adjustment expense $ 7,642,000 7,645,000 7,657,000 7,660,000 7,645,000 7,474,000 7,040,000 5,057,000    
Property Insurance [Member] | Short-Duration Insurance Contracts, Accident Year 2016 [Member]                    
Incurred claims and allocated claim adjustment expense 8,387,000 8,327,000 8,404,000 8,381,000 8,372,000 7,981,000 8,941,000      
Incurred but not reported $ 6,000                  
Number of reported claims 576                  
Cumulative paid claims and allocated adjustment expense $ 8,384,000 8,465,000 8,437,000 8,356,000 8,236,000 7,624,000 6,157,000      
Property Insurance [Member] | Short-Duration Insurance Contracts, Accident Year 2017 [Member]                    
Incurred claims and allocated claim adjustment expense 13,593,000 13,622,000 13,825,000 13,741,000 13,568,000          
Incurred but not reported $ 24,000                  
Number of reported claims 715                  
Cumulative paid claims and allocated adjustment expense $ 13,451,000 13,363,000 13,595,000 13,610,000 13,482,000 10,055,000        
Property Insurance [Member] | Short-Duration Insurance Contracts, Accident Year 2018 [Member]                    
Incurred claims and allocated claim adjustment expense 11,073,000 11,030,000 10,966,000 11,114,000 11,454,000          
Incurred but not reported $ 44,000                  
Number of reported claims 725                  
Cumulative paid claims and allocated adjustment expense $ 11,117,000 11,062,000 11,025,000 11,009,000 8,487,000          
Property Insurance [Member] | Short-Duration Insurance Contract, Accident Year 2019 [Member]                    
Incurred claims and allocated claim adjustment expense 15,078,000 14,976,000 14,758,000 13,933,000            
Incurred but not reported $ 3,000                  
Number of reported claims 833                  
Cumulative paid claims and allocated adjustment expense $ 14,902,000 14,855,000 14,161,000 11,621,000            
Property Insurance [Member] | Short-Duration Insurance Contract, Accident Year 2020 [Member]                    
Incurred claims and allocated claim adjustment expense 15,195,000 15,056,000 13,997,000              
Incurred but not reported $ 431,000                  
Number of reported claims 937                  
Cumulative paid claims and allocated adjustment expense $ 15,540,000 14,485,000 10,620,000              
Property Insurance [Member] | Short-Duration Insurance Contract, Accident Year 2021 [Member]                    
Incurred claims and allocated claim adjustment expense 14,799,000 12,968,000                
Incurred but not reported $ 312,000                  
Number of reported claims 746                  
Cumulative paid claims and allocated adjustment expense $ 14,712,000 11,220,000                
Property Insurance [Member] | Short-Duration Insurance Contract, Accident Year 2022 [Member]                    
Incurred claims and allocated claim adjustment expense 16,568,000                  
Cumulative paid claims and allocated adjustment expense 12,898,000                  
Property Insurance [Member] | Short -duration Insurance Contracts, Last Ten Years [Member]                    
Unpaid losses and settlement expense - years 2013 through 2022 3,684,000                  
Property Insurance [Member] | Short-duration Insurance Contracts, Prior Accident Years [Member]                    
Unpaid losses and settlement expense - years 2013 through 2022 5,000                  
Accident and Health Insurance Product Line [Member]                    
Incurred claims and allocated claim adjustment expense 179,103,000                  
Cumulative paid claims and allocated adjustment expense 128,959,000                  
Unpaid losses and settlement expense, net of reinsurance 50,315,000                  
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contracts, Accident Year 2013 [Member]                    
Incurred claims and allocated claim adjustment expense 14,180,000 14,144,000 14,081,000 14,076,000 13,858,000 13,696,000 12,960,000 13,169,000 13,559,000 12,584,000
Incurred but not reported $ 11,000                  
Number of reported claims 1,145                  
Cumulative paid claims and allocated adjustment expense $ 14,038,000 13,974,000 13,741,000 13,565,000 12,980,000 12,181,000 10,423,000 7,634,000 4,156,000 $ 1,579,000
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contracts, Accident Year 2014 [Member]                    
Incurred claims and allocated claim adjustment expense 16,995,000 16,929,000 16,953,000 16,996,000 16,881,000 16,718,000 15,341,000 14,744,000 13,385,000  
Incurred but not reported $ 80,000                  
Number of reported claims 1,213                  
Cumulative paid claims and allocated adjustment expense $ 16,749,000 16,401,000 16,374,000 15,912,000 15,232,000 13,602,000 9,515,000 4,087,000 $ 1,539,000  
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contracts, Accident Year 2015 [Member]                    
Incurred claims and allocated claim adjustment expense 15,210,000 15,182,000 14,714,000 14,486,000 13,862,000 13,440,000 13,876,000 16,596,000    
Incurred but not reported $ 91,000                  
Number of reported claims 1,095                  
Cumulative paid claims and allocated adjustment expense $ 14,479,000 13,932,000 13,262,000 12,487,000 10,528,000 7,404,000 4,319,000 $ 1,408,000    
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contracts, Accident Year 2016 [Member]                    
Incurred claims and allocated claim adjustment expense 18,608,000 18,413,000 17,547,000 16,855,000 16,240,000 14,843,000 16,677,000      
Incurred but not reported $ 195,000                  
Number of reported claims 1,041                  
Cumulative paid claims and allocated adjustment expense $ 17,618,000 16,649,000 14,206,000 12,205,000 8,189,000 5,488,000 $ 1,497,000      
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contracts, Accident Year 2017 [Member]                    
Incurred claims and allocated claim adjustment expense 18,049,000 17,067,000 15,977,000 15,842,000 15,803,000 15,808,000        
Incurred but not reported $ 292,000                  
Number of reported claims 1,042                  
Cumulative paid claims and allocated adjustment expense $ 17,141,000 14,771,000 11,878,000 8,753,000 5,419,000 $ 1,523,000        
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contracts, Accident Year 2018 [Member]                    
Incurred claims and allocated claim adjustment expense 16,581,000 16,925,000 17,082,000 17,122,000 18,308,000          
Incurred but not reported $ 679,000                  
Number of reported claims 1,128                  
Cumulative paid claims and allocated adjustment expense $ 14,688,000 12,419,000 9,312,000 5,656,000 $ 1,964,000          
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contract, Accident Year 2019 [Member]                    
Incurred claims and allocated claim adjustment expense 19,364,000 19,575,000 19,200,000 19,630,000            
Incurred but not reported $ 1,817,000                  
Number of reported claims 1,094                  
Cumulative paid claims and allocated adjustment expense $ 14,781,000 12,132,000 7,453,000 $ 3,664,000            
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contract, Accident Year 2020 [Member]                    
Incurred claims and allocated claim adjustment expense 15,262,000 14,106,000 17,359,000              
Incurred but not reported $ 1,904,000                  
Number of reported claims 634                  
Cumulative paid claims and allocated adjustment expense $ 8,026,000 4,882,000 $ 2,435,000              
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contract, Accident Year 2021 [Member]                    
Incurred claims and allocated claim adjustment expense 21,988,000 21,000,000                
Incurred but not reported $ 5,823,000                  
Number of reported claims 833                  
Cumulative paid claims and allocated adjustment expense $ 7,825,000 $ 3,520,000                
Accident and Health Insurance Product Line [Member] | Short-Duration Insurance Contract, Accident Year 2022 [Member]                    
Incurred claims and allocated claim adjustment expense 22,866,000                  
Incurred but not reported $ 14,825,000                  
Number of reported claims 646                  
Cumulative paid claims and allocated adjustment expense $ 3,614,000                  
Accident and Health Insurance Product Line [Member] | Short -duration Insurance Contracts, Last Ten Years [Member]                    
Unpaid losses and settlement expense - years 2013 through 2022 50,144,000                  
Accident and Health Insurance Product Line [Member] | Short-duration Insurance Contracts, Prior Accident Years [Member]                    
Unpaid losses and settlement expense - years 2013 through 2022 $ 171,000