Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 8,753	$ 11,834
Short-term investments	138,340	93,968
Accounts receivable	13,295	10,956
Inventories	17,945	14,835
Prepaid and other current assets	2,112	2,962
Total current assets	180,445	134,555
Property and equipment, net	10,533	10,138
Operating leases right-of-use assets	3,174	3,943
Restricted cash	761	761
Other assets	348	767
Total assets	195,261	150,164
Current liabilities:
Accounts payable	3,997	2,595
Accrued expenses and other current liabilities	10,588	12,672
Lease liabilities	1,980	1,970
Total current liabilities	16,565	17,237
Long-term lease liabilities	1,843	2,856
Term loan, net	19,589	40,169
Other long-term liabilities	76	0
Total liabilities	38,073	60,262
Commitments and contingencies (Note 9)
Stockholders' deficit:
Common stock, $0.001 par value, 900,000,000 shares authorized, 35,168,041 shares issued and outstanding as of June 30, 2023 and 28,268,389 shares issued and outstanding as of December 31, 2022	35	28
Preferred stock, $0.001 par value, 100,000,000 shares authorized, no shares issued and outstanding	0	0
Additional paid-in capital	730,274	636,001
Accumulated other comprehensive loss	(73)	(95)
Accumulated deficit	(573,048)	(546,032)
Total stockholders' deficit	157,188	89,902
Total liabilities and stockholders' equity	$ 195,261	$ 150,164