Note 11 - Debt - Component of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Long term debt, principal	$ 48,869	$ 46,296
Carrying value	47,061	44,416
Long term debt, fair value	48,497	45,756
Notes Payable to Banks [Member]
Long term debt, principal	33,869	31,296
Carrying value	33,410	30,822
Long term debt, fair value	34,846	32,162
Notes Payable to Banks [Member] | Ravix Bank Loan [Member]
Long term debt, principal	4,425	4,650
Carrying value	4,425	4,650
Long term debt, fair value	4,505	4,811
Notes Payable to Banks [Member] | The 2022 Ravix Loan [Member]
Long term debt, principal	4,775	4,925
Carrying value	4,628	4,769
Long term debt, fair value	5,034	5,027
Notes Payable to Banks [Member] | SNS Loan [Member]
Long term debt, principal	5,017	5,142
Carrying value	4,942	5,063
Long term debt, fair value	5,245	5,243
Notes Payable to Banks [Member] | DDI Loan [Member]
Long term debt, principal	5,600	5,600
Carrying value	5,537	5,534
Long term debt, fair value	5,604	5,841
Notes Payable to Banks [Member] | The 2020 KWH Bank Loan [Member]
Long term debt, principal	14,052	10,979
Carrying value	13,878	10,806
Long term debt, fair value	14,458	11,240
Subordinated Debt [Member]
Long term debt, principal	15,000	15,000
Carrying value	13,651	13,594
Long term debt, fair value	$ 13,651	$ 13,594