Note 7 - Related Party Transactions (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Three Months Ended June 30,
	2024					2023
	Income		Expense			Income		Expense
GAMCO Investors, Inc.	$	441	$	—		$	388	$	—
M-tron Industries, Inc.		—		(15	)		—		12
Total	$	441	$	(15	)	$	388	$	12

	Six Months Ended June 30,
	2024					2023
	Income		Expense			Income		Expense
GAMCO Investors, Inc.	$	849	$	—		$	822	$	—
M-tron Industries, Inc.		—		(29	)		—		(4	)
Total	$	849	$	(29	)	$	822	$	(4	)

	June 30, 2024				December 31, 2023
	Assets		Liabilities		Assets		Liabilities
GAMCO Investors, Inc.	$	33,488	$	—	$	32,568	$	—
M-tron Industries, Inc.		—		74		—		—
Total	$	33,488	$	74	$	32,568	$	—