CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 110,815	$ 20,717
Short-term investments	58,615	76,573
Accounts receivable, net of allowance for credit losses of $500 and $400, respectively	20,422	20,674
Inventory	20,547	17,282
Prepaid expenses and other current assets	2,135	2,365
Total current assets	212,534	137,611
Property and equipment, net	17,579	15,564
Operating lease right-of-use assets	3,372	4,002
Other non-current assets	340	375
TOTAL ASSETS	233,825	157,552
Current liabilities:
Accounts payable	6,157	6,279
Accrued liabilities and other	10,642	13,511
Operating lease liabilities, current portion	1,403	1,388
Total current liabilities	18,202	21,178
Long-term borrowings	35,980	35,171
Operating lease liabilities, net of current portion	2,212	2,871
Other long-term liabilities	24	30
TOTAL LIABILITIES	56,418	59,250
Commitments and contingencies (Note 6)
STOCKHOLDERS’ EQUITY
Preferred stock, $0.0001 par value; 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.0001 par value; 100,000,000 shares authorized; 40,087,765 and 34,731,577 shares issued and outstanding, respectively	4	3
Additional paid-in capital	556,541	455,172
Accumulated other comprehensive income	298	232
Accumulated deficit	(379,436)	(357,105)
TOTAL STOCKHOLDERS’ EQUITY	177,407	98,302
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 233,825	$ 157,552