Note 7 - Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Three Months Ended September 30,
	2024					2023
	Income		Expense			Income		Expense
GAMCO Investors, Inc.	$	444	$	—		$	350	$	—
M-tron Industries, Inc.		—		(15	)		—		12
Total	$	444	$	(15	)	$	350	$	12

	Nine Months Ended September 30,
	2024					2023
	Income		Expense			Income		Expense
GAMCO Investors, Inc.	$	1,293	$	—		$	1,172	$	—
M-tron Industries, Inc.		—		(44	)		—		8
Total	$	1,293	$	(44	)	$	1,172	$	8

	September 30, 2024				December 31, 2023
	Assets		Liabilities		Assets		Liabilities
GAMCO Investors, Inc.	$	33,931	$	—	$	32,568	$	—
M-tron Industries, Inc.		—		34		—		—
Total	$	33,931	$	34	$	32,568	$	—