CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
CURRENT ASSETS
Cash and cash equivalents		$ 69,935	$ 105,027
Restricted cash		2,768	2,768
Accounts receivable, net		3,194	3,122
Inventories		13,066	11,428
Prepaid expenses and other current assets		12,000	4,915
Deferred contract costs, current		0	7,580
TOTAL CURRENT ASSETS		100,963	134,840
Property and equipment, net		6,602	7,019
Unbilled receivables		11,044	8,891
Forward purchase receivable		58,184	60,050
Operating lease right-of-use asset	[1]	10,520	0
Goodwill		7,444	7,444
Prepaid expenses, noncurrent		10,702	0
Deferred contract costs, noncurrent		0	11,847
Other long-term assets		1,431	1,514
TOTAL ASSETS		206,890	231,605
CURRENT LIABILITIES
Accounts payable		16,542	28,936
Accrued expenses		10,600	6,392
Deferred revenue		1,904	2,020
Operating lease liabilities, current	[1]	3,270	0
Other current liabilities		18,031	21,899
SPAC warrant liabilities		19,820	22,045
TOTAL CURRENT LIABILITIES		70,167	81,292
PIPE Convertible Notes, net of transaction costs		77,371	77,047
Long-term debt		43,386	43,287
Forward purchase option derivative		17,609	4,203
Earnout liability		20,145	27,134
Operating lease, liability, noncurrent	[1]	7,703	0
Other long-term liabilities		104	217
TOTAL LIABILITIES		236,485	233,180
STOCKHOLDERS’ DEFICIT
Common stock, $0.0001 par value per share; 600,000,000 shares authorized as of both March 31, 2022 and December 31, 2021; 66,915,204 and 66,647,242 shares issued and outstanding as of both March 31, 2022 and December 31, 2021, respectively		7	7
Additional paid-in capital		391,257	383,066
Accumulated deficit		(420,859)	(384,648)
TOTAL STOCKHOLDERS’ DEFICIT		(29,595)	(1,575)
TOTAL LIABILITIES AND STOCKHOLDERS’ DEFICIT		$ 206,890	$ 231,605

[1] Figures as of March 31, 2022 reflect the Company’s January 1, 2022 adoption of Accounting Standards Update (“ASU”) No. 2016-02, Leases. For additional details, see Note 1.