Credit Agreement and Guaranty - Carrying Amount Of term Loan (Details) - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Credit Agreement and Guaranty
Notes payable	$ 15,000,000		$ 20,000,000
Debt issuance costs	(478,000)		(550,000)
Warrant discount	(2,270,000)		(2,617,000)
Total	12,252,000		16,833,000
Less, current portion	12,252,000		$ 16,833,000
Warrants and debt issue costs	$ 412,000	$ 335,000

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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