Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 79,655	$ 81,309
Short-term investments	49,195	84,475
Accounts receivable (net of allowances of $151 and $592 at September 30, 2023 and December 31, 2022, respectively)	16,560	17,280
Inventories, net	21,927	21,473
Prepaid expenses and other current assets	3,404	4,278
Total current assets	170,741	208,815
Property and equipment, net	24,538	25,652
Operating lease right-of-use asset, net	31,191	33,883
Other non-current assets	2,390	3,109
Developed technology, net	4,200	12,600
Goodwill	106,225	106,251
Total assets	339,285	390,310
Current liabilities:
Accounts payable	7,327	7,914
Accrued compensation and related benefits	10,423	9,153
Operating lease liabilities, current	3,980	3,682
Deferred revenue, current	11,234	10,792
Deferred grant income, current	3,637	3,644
Other accrued liabilities	10,199	6,175
Term loan, current	5,000	2,083
Total current liabilities	51,800	43,443
Convertible Notes Payable, Noncurrent	54,975	54,615
Term loan, non-current	4,615	8,194
Deferred tax liability	1,017	1,055
Operating lease liabilities, non-current	31,150	34,081
Deferred revenue, non-current	3,474	3,816
Deferred grant income, non-current	11,635	14,359
Other non-current liabilities	1,086	961
Total liabilities	159,752	160,524
Commitments and contingencies (Note 7)
Mezzanine equity:
Redeemable preferred stock: $0.001 par value; 256 shares authorized, issued and outstanding at September 30, 2023 and December 31, 2022; aggregate liquidation preference of $255,559 at September 30, 2023 and December 31, 2022	311,253	311,253
Stockholders’ deficit:
Preferred stock: $0.001 par value, 9,744 shares authorized at September 30, 2023 and December 31, 2022; no shares issued and outstanding at September 30, 2023 and December 31, 2022	0	0
Common stock: $0.001 par value, 400,000 shares authorized at September 30, 2023 and December 31, 2022; 82,527 and 79,904 shares issued at September 30, 2023 and December 31, 2022, respectively; 79,470 and 79,482 shares outstanding at September 30, 2023 and December 31, 2022, respectively	82	80
Additional paid-in capital	856,926	847,008
Accumulated other comprehensive loss	(1,949)	(1,896)
Accumulated deficit	(980,976)	(926,096)
Treasury stock at cost: 3,057 and 422 shares at September 30, 2023 and December 31, 2022, respectively	(5,803)	(563)
Total stockholders’ deficit	(131,720)	(81,467)
Total liabilities, mezzanine equity and stockholders’ deficit	$ 339,285	$ 390,310