CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents		$ 13,748	$ 51,722
Accounts receivable, net		1,914	1,934
Inventory		7,236	4,338
Prepaid expenses and other current assets		3,357	901
Total current assets		26,255	58,895
Property and equipment, net		2,527	3,153
Operating lease right-of-use assets		2,943	3,308
Intangible assets, net		3,122	2,208
Goodwill		8,454	8,454
Other assets		115	123
Total assets		43,416	76,141
Current liabilities:
Accounts payable		1,987	1,930
Accrued expenses		4,476	3,247
Accrued compensation		3,391	3,714
Operating lease liabilities		935	802
Term loan			28,352
Other current liabilities		2,009	2,756
Total current liabilities		12,798	40,801
Warrant liabilities		4,225	1,914
Operating lease liabilities, net of current		1,964	2,449
Term loan, net of current		26,374
Forward obligation		3,300	2,750
Other liabilities		469	776
Total liabilities		49,130	48,690
Commitments and contingencies (Note 8)
Convertible preferred stock, par value $0.0001 17,528,207 shares authorized as of September 30, 2021 and December 31, 2020; 17,031,887 shares issued and outstanding as of September 30, 2021 and December 31, 2020; aggregate liquidation preference of $282,198 as of September 30, 2021 and December 31, 2020	[1]	281,342	281,342
Stockholders' deficit:
Common stock, par value $0.001; 21,643,836 shares authorized; 1,305,634 and 1,247,024 shares issued as of September 30, 2021 and December 31, 2020, respectively; 1,258,945 and 1,200,335 shares outstanding as of September 30, 2021 and December 31, 2020, respectively		2	2
Additional paid-in-capital		11,326	9,703
Accumulated deficit		(298,333)	(263,545)
Stockholders' deficit before treasury stock		(287,005)	(253,840)
Less: Treasury stock		(51)	(51)
Total stockholders’ deficit		(287,056)	(253,891)
Total liabilities, convertible preferred stock and stockholders’ deficit		$ 43,416	$ 76,141

[1] The carrying value reflects the gross proceeds received from the sale of the preferred stock less issuance costs and the fair value at issuance of preferred stock warrants classified as a liability.