CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 66,054	$ 84,641
Accounts receivable, net	2,702	2,516
Inventory	10,134	8,150
Prepaid expenses and other current assets	3,968	3,552
Total current assets	82,858	98,859
Property and equipment, net	2,177	2,366
Operating lease right-of-use assets	2,478	2,746
Intangible assets, net	2,790	2,956
Goodwill	8,454	8,454
Other assets	118	118
Total assets	98,875	115,499
Current liabilities:
Accounts payable	2,235	3,061
Accrued expenses	4,416	4,758
Accrued compensation	2,513	3,376
Operating lease liabilities	966	975
Other current liabilities	1,957	2,482
Total current liabilities	12,087	14,652
Operating lease liabilities, net of current	1,474	1,730
Term loan, net of current	26,620	26,496
Other liabilities	517	558
Total liabilities	40,698	43,436
Commitments and contingencies (Note 8)
Stockholders' deficit:
Preferred stock, $0.001 par value; authorized -10,000,000 shares; issued and outstanding - none
Common stock, $0.001 par value; authorized - 500,000,000 shares; issued - 26,465,797 shares as of March 31,2022 and 26,383,225 shares as of December 31, 2021; outstanding - 26,419,108 shares as of March 31, 2022 and 26,336,536 shares as of December 31, 2021	26	26
Additional paid-in-capital	385,768	384,132
Accumulated deficit	(327,566)	(312,044)
Stockholders' deficit before treasury stock	58,228	72,114
Less: Treasury stock	(51)	(51)
Total stockholders' equity	58,177	72,063
Total liabilities and stockholders' equity	$ 98,875	$ 115,499