UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 33,084	$ 11,534
Restricted cash	40	1,790
Accounts receivable, net of allowance for doubtful accounts of $514 and $659 at June 30, 2022 and December 31, 2021, respectively	11,747	13,297
Accounts receivable, related party	11,603	0
Inventories, net	13,249	9,454
Other current assets	4,000	3,762
Current contract assets	6,260	0
Assets held for sale	535	2,762
Total current assets	80,518	42,599
Property and equipment, net	4,819	5,296
Operating lease right-of-use assets	1,771	2,041
Deferred tax assets, net	283	279
Other long-term assets	17	29
Long term contract assets	76,063	0
Total assets	163,471	50,244
Current liabilities:
Accounts payable	19,771	7,616
Accrued liabilities	7,115	8,996
Income taxes payable	103	4
Interest payable	106	82
Current portion of operating lease liabilities	636	602
Current portion of finance lease liabilities	34	41
Current portion of long-term debt	1,690	1,436
Convertible notes payable	18,323	0
Contract consideration convertible notes payable	67,220	0
Total current liabilities	114,998	18,777
Deferred revenue, long-term	84	91
Long-term operating lease liabilities	6,695	7,779
Long-term finance lease liabilities	38	53
Long-term debt	3,098	3,352
TOTAL LIABILITIES	124,913	30,052
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.0001 par value, 100,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.0001 par value, 140,000,000 shares authorized; 82,884,690 shares issued and 76,773,333 shares outstanding at June 30, 2022 ; 79,483,837 shares issued and 73,461,203 shares outstanding at December 31, 2021	8	8
Additional paid-in capital	386,310	363,417
Accumulated other comprehensive income	176	81
Accumulated deficit	(313,698)	(309,214)
Treasury stock, at cost; 6,111,357 and 6,022,634 shares at June 30, 2022 and December 31, 2021 , respectively	(34,238)	(34,100)
Total stockholders’ equity	38,558	20,192
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 163,471	$ 50,244