Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 15,276	$ 25,217
Accounts receivable, net	14,124	11,913
Contract asset	8,934	8,565
Inventory	9,470	8,917
Prepaid expenses and other current assets	1,889	2,917
Total current assets	49,693	57,529
Property, plant and equipment, net	51,353	51,708
Operating lease asset	5,818	5,924
Intangible assets, net	3,612	3,833
Goodwill	41,077	41,077
Other assets	246	246
Total assets	151,799	160,317
Current liabilities:
Accounts payable	1,556	2,085
Current portion of related party debt	2,039	2,039
Current portion of operating lease liability	1,062	1,055
Accrued expenses and other current liabilities	6,344	12,556
Total current liabilities	11,001	17,735
Debt, net of current portion	93,240	92,127
Related party debt, net of current portion	3,477	3,369
Operating lease liability, net of current portion	4,850	4,932
Other liabilities	69	90
Total liabilities	112,637	118,253
Commitments and contingencies (note 7)
Shareholders' equity:
Preferred stock, $0.01 par value. 10,000,000 shares authorized, none issued or outstanding	0	0
Common stock, $0.01 par value. 95,000,000 shares authorized, 56,632,541and 46,681,453 shares issued and outstanding at March 31, 2022 and December 31, 2021, respectively	565	467
Additional paid-in capital	288,615	287,351
Accumulated deficit	(250,018)	(245,754)
Total shareholders' equity	39,162	42,064
Total liabilities and shareholders' equity	$ 151,799	$ 160,317