Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 99,173	$ 91,436
Restricted cash	567	567
Marketable securities	0	23,280
Accounts receivable, net	23,638	20,310
Inventory	11,310	9,174
Prepaid expenses	11,402	13,279
Other current assets	38,461	22,502
Total current assets	184,551	180,548
Property and equipment, net	702	796
Intangible assets	5,385	5,785
Right of use assets - operating leases	740	3,933
Other assets	1,487	520
Total assets	192,865	191,582
Current liabilities:
Accounts payable	14,562	9,925
Accrued expenses and other current liabilities	66,085	59,758
Deferred revenue	0	1,000
Operating lease liability, current	1,121	2,490
Total current liabilities	81,768	73,173
Convertible notes payable	190,065	213,645
Term loan	147,848	24,905
Operating lease liability, long term	261	3,518
Total liabilities	419,942	315,241
Stockholders’ equity (deficit):
Common stock, 0.0001 par value; 200,000,000 shares authorized, 47,255,094 shares and 46,779,479 shares issued and outstanding at June 30, 2021 and December 31, 2020	5	5
Additional paid-in-capital	1,103,282	1,222,137
Accumulated other comprehensive income	0	21
Accumulated deficit	(1,330,364)	(1,345,822)
Total stockholders’ equity (deficit)	(227,077)	(123,659)
Total liabilities and stockholders’ equity (deficit)	$ 192,865	$ 191,582