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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
Supplemental cash flows and non-cash transactions were as follows for the periods indicated (in thousands):

Year Ended December 31,
202120202019
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 Act3,712 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 
See Note 17 for information related to non-cash transactions related to leases.