CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS
Cash and cash equivalents	$ 33,271	$ 20,717
Short-term investments	132,748	76,573
Accounts receivable, net of allowance for credit losses of $1,118 and $400, respectively	21,953	20,674
Inventory	20,249	17,282
Prepaid expenses and other current assets	3,173	2,365
Total current assets	211,394	137,611
Property and equipment, net	16,000	15,564
Operating lease right-of-use assets	2,706	4,002
Other non-current assets	325	375
TOTAL ASSETS	230,425	157,552
CURRENT LIABILITIES
Accounts payable	4,588	6,279
Accrued liabilities and other	17,452	13,511
Operating lease liabilities, current portion	1,416	1,388
Total current liabilities	23,456	21,178
Long-term borrowings	36,065	35,171
Operating lease liabilities, net of current portion	1,511	2,871
Other long-term liabilities	18	30
TOTAL LIABILITIES	61,050	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; 40,693,299 and 34,731,577 shares issued and outstanding, respectively	4	3
Additional paid-in capital	569,477	455,172
Accumulated other comprehensive income	335	232
Accumulated deficit	(400,441)	(357,105)
TOTAL STOCKHOLDERS’ EQUITY	169,375	98,302
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 230,425	$ 157,552