Credit Agreement and Guaranty - Carrying Amount Of term Loan (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Credit Agreement and Guaranty
Notes payable	$ 15,000,000		$ 15,000,000		$ 20,000,000
Debt issuance costs	(412,000)		(412,000)		(550,000)
Warrant discount	(1,958,000)		(1,958,000)		(2,617,000)
Total	12,630,000		12,630,000		16,833,000
Less, current portion	12,630,000		12,630,000		$ 16,833,000
Warrants and debt issue costs	$ 378,000	$ 398,000	$ 797,000	$ 734,000