Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Supplemental disclosures:
Interest paid	$ 2,811	$ 4,817	$ 2,412
Income taxes paid, Federal	39,394	50,200	15,742
Income taxes paid, State	10,530	13,176	3,551
Operating activities - other:
Gain on disposition of assets	(23)	(13)	(12)
Foreign currency transaction loss (gain)	37	(10)	41
Interest income on note receivable	(18)	(21)	(22)
Other	(4)	(44)	7
Non-cash investing and financing activities:
Non-cash capital expenditures	202	287	1,919
Contingent shares issued (Note 17)	$ 6,364	$ 0	$ 0