Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest		$ 369	$ 602
Cash paid for federal and state income taxes		1,827	1,297
Cash refund for NOL carryback under CARES Act		6,907	3,712
Non-cash transactions:
Change in accounts payable related to property and equipment additions		0	(72)
Property and equipment acquired under finance leases		4,353	2,083
Issuance of common shares for acquisition	$ 425	$ 1,364	$ 0