Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 3,511	$ 425	$ 746
Cash paid for federal and state income taxes	2,498	3,020	2,251
Cash refund for NOL carryback under CARES Act	0	6,907	3,712
Non-cash transactions:
Change in accounts payable related to property and equipment additions	52	(52)	0
Property and equipment acquired under finance leases	17,940	7,873	2,083
Issuance of common shares in acquisition (see Note 6)	$ 0	$ 425	$ 0