Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Common Class A [Member]
Dividends declared (in dollars per share)	$ 0.06	$ 0.06
Common Class B [Member]
Dividends declared (in dollars per share)	$ 0.07	$ 0.07
Foreign currency translation adjustment, tax expense	$ 0	$ 26
Unrealized losses on interest rate swap cash flow hedge, tax	0	0
Change in unfunded SERP liability, tax	8	(4)
Unrealized loss on marketable securities arising during the period, tax	$ 0	$ 0

Aggregate dividends declared during the period for each share of common stock outstanding.

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