v3.26.1
Note 7 - Related Party Transactions - Transactions With Related Parties (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Income $ 1,085 $ 918  
Expense (1,870) (877)  
Assets 48,123   $ 46,776
Liabilities 1,494   1,211
GAMCO Investors, Inc. [Member]      
Income 346 348  
Expense 0 0  
Assets 41,188   36,175
Liabilities 0   0
Mtron Industries Inc [Member]      
Income 0 0  
Expense 40 (14)  
Assets 0   0
Liabilities 316   227
Related Party [Member]      
Income 346 348  
Expense 40 $ (14)  
Assets 41,188   36,175
Liabilities $ 316   $ 227