Supplemental Disclosure of Cash Flow and Non-Cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest			$ 2,207	$ 3,731
Income taxes paid			157	13
Non-cash activities:
Lease right of use asset and liability			189	0
Note receivable for sale of property and equipment			75	0
Purchases of equipment in accounts payable			67	0
Fair value of non-cash consideration received for option exercise			380	0
Deemed dividends on Series B Convertible Preferred Stock	$ 464	$ 0	926	0
Deferred financing costs			0	1,715
Amendment fee on BT Term Loan			$ 0	$ 722