Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 11,012	$ 11,834
Short-term investments	142,927	93,968
Accounts receivable	12,668	10,956
Inventories	18,067	14,835
Prepaid and other current assets	2,992	2,962
Total current assets	187,666	134,555
Property and equipment, net	9,804	10,138
Operating leases right-of-use assets	3,555	3,943
Restricted cash	761	761
Other assets	746	767
Total assets	202,532	150,164
Current liabilities:
Accounts payable	3,717	2,595
Accrued expenses and other current liabilities	9,181	12,672
Lease liabilities	1,978	1,970
Total current liabilities	14,876	17,237
Long-term lease liabilities	2,338	2,856
Term loan, net	40,309	40,169
Total liabilities	57,523	60,262
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock, $0.001 par value, 900,000,000 shares authorized, 33,966,697 shares issued and outstanding as of March 31, 2023 and 28,268,389 shares issued and outstanding as of December 31, 2022	34	28
Preferred stock, $0.001 par value, 100,000,000 shares authorized,no shares issued and outstanding	0	0
Additional paid-in capital	704,228	636,001
Accumulated other comprehensive loss	(9)	(95)
Accumulated deficit	(559,244)	(546,032)
Total stockholders' equity	145,009	89,903
Total liabilities and stockholders' equity	$ 202,532	$ 150,164