Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 111,533	$ 91,436
Restricted cash	567	567
Marketable securities	0	23,280
Accounts receivable, net	23,355	20,310
Inventory	11,373	9,174
Prepaid expenses	10,050	13,279
Other current assets	16,201	22,502
Total current assets	173,079	180,548
Property and equipment, net	647	796
Intangible assets	4,986	5,785
Right of use assets - operating leases	835	3,933
Other assets	1,995	520
Total assets	181,542	191,582
Current liabilities:
Accounts payable	17,625	9,925
Accrued expenses and other current liabilities	76,549	59,758
Deferred revenue	0	1,000
Operating lease liability, current	613	2,490
Total current liabilities	94,787	73,173
Convertible notes payable	190,479	213,645
Term loan	148,265	24,905
Operating lease liability, long term	315	3,518
Total liabilities	433,846	315,241
Commitments and contingencies
Stockholders’ equity (deficit):
Common stock, $0.0001 par value; 200,000,000 shares authorized, 47,359,573 shares and 46,779,479 shares issued and outstanding at December 31, 2021 and 2020, respectively	5	5
Additional paid-in-capital	1,115,672	1,222,137
Accumulated other comprehensive income (loss)	0	21
Accumulated deficit	(1,367,981)	(1,345,822)
Total stockholders’ equity (deficit)	(252,304)	(123,659)
Total liabilities and stockholders’ equity (deficit)	$ 181,542	$ 191,582