v3.26.1
Note 7 - Related Party Transactions - Transactions With Related Parties (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Income $ 1,153 $ 924 $ 2,238 $ 1,842  
Expense (1,600) (955) (3,470) (1,832)  
Assets 49,684   49,684   $ 46,776
Liabilities 2,097   2,097   1,211
Alpha G Investment Management, Inc. [Member]          
Assets 0   0   0
Liabilities 66   66   0
GAMCO Investors, Inc. [Member]          
Income 370 366 716 714  
Expense 0 0 0 0  
Assets 41,536   41,536   36,175
Liabilities 0   0   0
Mtron Industries Inc [Member]          
Income 0 0 0 0  
Expense 40 22 80 8  
Assets 0   0   0
Liabilities 376   376   227
Alpha G Investment Management, Inc. [Member]          
Income 0 0 0 0  
Expense 66 0 66 0  
Related Party [Member]          
Income 370 366 716 714  
Expense 106 $ 22 146 $ 8  
Assets 41,536   41,536   36,175
Liabilities $ 442   $ 442   $ 227