Note 7 - Investments - Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
US Government Agencies Debt Securities [Member]
Less than 12 months, estimated fair value	$ 4,543	$ 12,077
Less than 12 Months	126	84
Greater than 12 months, estimated fair value	10,537	0
Greater than 12 Months	591	0
Estimated fair value	15,080	12,077
Total, debt securities	717	84
US States and Political Subdivisions Debt Securities [Member]
Less than 12 months, estimated fair value	1,040	846
Less than 12 Months	73	5
Greater than 12 months, estimated fair value	937	0
Greater than 12 Months	85	0
Estimated fair value	1,977	846
Total, debt securities	158	5
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]
Less than 12 months, estimated fair value	2,248	5,388
Less than 12 Months	93	68
Greater than 12 months, estimated fair value	5,756	0
Greater than 12 Months	554	0
Estimated fair value	8,004	5,388
Total, debt securities	647	68
Asset-Backed Securities [Member]
Less than 12 months, estimated fair value	1,251	445
Less than 12 Months	39	4
Greater than 12 months, estimated fair value	299	0
Greater than 12 Months	33	0
Estimated fair value	1,550	445
Total, debt securities	72	4
Corporate Debt Securities [Member]
Less than 12 months, estimated fair value	3,244	7,542
Less than 12 Months	155	129
Greater than 12 months, estimated fair value	6,760	0
Greater than 12 Months	789	0
Estimated fair value	10,004	7,542
Total, debt securities	944	129
Fixed Maturities [Member]
Less than 12 months, estimated fair value	12,326	26,298
Less than 12 Months	486	290
Greater than 12 months, estimated fair value	24,289	0
Greater than 12 Months	2,052	0
Estimated fair value	36,615	26,298
Total, debt securities	$ 2,538	$ 290

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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