Note 4 - Investments - Fixed Maturity Securities by Contractual Maturities (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Due in one year or less, amortized cost	$ 0
Due in one year or less, amortized cost, percent	0.00%
Due in one year or less, fair value	$ 0
Due in one year or less, fair value, percent	0.00%
Due after one year through five years, amortized cost	$ 4,116
Due after one year through five years, amortized cost, percent	100.00%
Due after one year through five years, fair value	$ 4,116
Due after one year through five years, fair value, percent	100.00%
Due after five years through ten years, amortized cost	$ 0
Due after five years through ten years, amortized cost, percent	0.00%
Due after five years through ten years, fair value	$ 0
Due after five years through ten years, fair value, percent	0.00%
Due after ten years, amortized cost	$ 0
Due after ten years, amortized cost, percent	0.00%
Due after ten years, fair value	$ 0
Due after ten years, fair value, percent	0.00%
Total, amortized cost	$ 4,116
Total, amortized cost, percent	100.00%
Total, fair value	$ 4,116
Total, fair value, percent	100.00%

Percentage of total amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing after tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.