Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

Supplemental cash flows and non-cash transactions were as follows for the periods indicated (in thousands):

	Year Ended December 31,
	2021		2020		2019
Cash paid for interest	$	746	$	444	$	636
Cash paid for federal and state income taxes	2,251		418		234
Cash refund for NOL carryback under CARES Act	3,712		2,703		—
Non-cash transactions:
Change in accounts payable related to property and equipment     additions	—		(1,237)		(448)
Property and equipment acquired under finance leases	2,083		11,412		4,148
Issuance of common shares in asset acquisition (see Note 6)	—		—		392
Receivable for sale of property and equipment	—		—		952