CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 32,040	$ 33,271
Short-term investments	125,782	132,748
Accounts receivable, net of allowance for credit losses of $1,189 and $1,118, respectively	22,109	21,953
Inventory	21,049	20,249
Prepaid expenses and other current assets	2,647	3,173
Total current assets	203,627	211,394
Property and equipment, net	17,348	16,000
Operating lease right-of-use assets	2,415	2,706
Other non-current assets	323	325
TOTAL ASSETS	223,713	230,425
Current liabilities:
Accounts payable	7,661	4,588
Accrued liabilities and other	11,767	17,452
Operating lease liabilities, current portion	1,433	1,416
Total current liabilities	20,861	23,456
Long-term borrowings	36,107	36,065
Operating lease liabilities, net of current portion	1,192	1,511
Other long-term liabilities	16	18
TOTAL LIABILITIES	58,176	61,050
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; 41,078,762 and 40,693,299 shares issued and outstanding, respectively	4	4
Additional paid-in capital	576,612	569,477
Accumulated other comprehensive income	266	335
Accumulated deficit	(411,345)	(400,441)
TOTAL STOCKHOLDERS’ EQUITY	165,537	169,375
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 223,713	$ 230,425