Note 7 - Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Schedule of Related Party Transactions [Table Text Block]

	Three Months Ended March 31,
	2024					2023
	Income		Expense			Income		Expense
GAMCO Investors, Inc.	$	408	$	—		$	434	$	—
M-tron Industries, Inc.		—		(14	)		—		(16	)
Total	$	408	$	(14	)	$	434	$	(16	)

	March 31, 2024				December 31, 2023
	Assets		Liabilities		Assets		Liabilities
GAMCO Investors, Inc.	$	32,977	$	—	$	32,568	$	—
M-tron Industries, Inc.		5		—		—		—
Total	$	32,982	$	—	$	32,568	$	—