Debt - Long-term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finance leases – collateralized by vehicles, payable in monthly installments of principal, plus interest ranging from 4.55% to 6.45% through 2026	$ 5,132	$ 6,459
Total debt	40,013	45,459
Less - Current portion of long-term debt	(9,879)	(6,536)
Less - Unamortized discount and debt issuance costs	(318)	(2,410)
Long-term debt	$ 29,816	36,513
Minimum
Finance leases, interest rate	4.55%
Maximum
Finance leases, interest rate	6.45%
2019 Refinancing Term Loan – term loan payable in quarterly installments of principal, (commencing in September 2020) plus interest through April 2022
Long-term debt		39,000
Term Loan | A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, (commencing in December 2021) plus interest through February 2026
Long-term debt	$ 34,881	0
Term Loan | 2019 Refinancing Term Loan – term loan payable in quarterly installments of principal, (commencing in September 2020) plus interest through April 2022
Long-term debt	0	39,000
Revolving Credit Facility | A&R Wintrust Revolving Loan
Long-term debt	$ 0	$ 0