Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 31,164	$ 31,807
Trade and other receivables, net	13,643	6,955
Inventories, net	2,863	2,461
Prepaid expenses and other current assets	2,540	3,402
Total current assets	50,210	44,625
Property and equipment, net	5,197	6,873
Right-of-use assets, net	2,917	3,448
Intangible assets, net	64	102
Other non-current assets	6,905	7,836
Total assets	65,293	62,884
Current liabilities:
Accounts payable	6,215	7,089
Accrued expenses	7,624	8,569
Lease liabilities, current	860	728
Deferred revenue, current	767	693
Liability related to the sale of future revenue, current	1,848	1,450
Loans payable, current	7,725	2,575
Total current liabilities	25,039	21,104
Loans payable, net	32,673	34,329
Liability related to the sale of future revenue, net	56,615	47,524
Lease liabilities	2,185	2,846
Deferred revenue	7,316	3,633
Other non-current liabilities	1,810	1,945
Total liabilities	125,638	111,381
Contingencies (Note 19)
Stockholders’ deficit:
Common stock, $0.001 par value. Authorized 250,000,000 shares; 40,083,245 and 34,569,254 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	40	35
Additional paid-in capital	167,466	137,725
Accumulated deficit	(227,851)	(186,257)
Total stockholders’ deficit	(60,345)	(48,497)
Total liabilities and stockholders’ deficit	$ 65,293	$ 62,884