Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Operating activities
Net loss	$ (2,964)	$ (48,477)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	530	1,582
Amortization of finance lease right-of-use assets	18	19
Net accretion of premium and discount on investments	(1)	(1,681)
Investment income in unconsolidated variable interest entity	(1,108)	(1,766)
Impairment of property and equipment	2,062	0
Loss on disposal of property and equipment	0	306
Stock-based compensation	4,725	17,350
Changes in operating assets and liabilities:
Accounts receivable, net	(3,001)	5,962
Inventories	4,210	15,578
Prepaid expenses and other current assets	51,479	4,527
Operating lease right-of-use assets	620	6,806
Other assets	549	441
Accounts payable	(21,692)	(7,977)
Accrued and other liabilities	(30,700)	(52,663)
Operating lease liabilities, current	(434)	1,489
Deferred revenues	7,537	(29,501)
Accrued interest expense related to sale of future revenues	3,684	(1,904)
Accrued interest for finance lease liabilities	(11)	12
Operating lease liabilities, non-current	(205)	(8,128)
Other long-term liabilities	103	(1,132)
Net cash provided by (used in) operating activities	15,401	(99,157)
Investing activities
Purchases of property and equipment	(29)	(43)
Proceeds from sale of property and equipment	0	3
Purchases of available-for-sale securities		(8,628)
Proceeds from maturities of investments	0	132,183
Net cash provided by (used in) investing activities	(29)	123,515
Financing activities
Repayments of finance lease liabilities	(2)	(20)
Cash paid for payroll taxes on restricted stock unit releases	(49)	(229)
Payment of issuance cost under ATM Program	(46)	0
Proceeds from issuance of common stock under employee stock plans	0	116
Net cash used in financing activities	(97)	(133)
Effect of exchange rate change on cash and cash equivalents	2,388	2,801
Net increase in cash and cash equivalents	17,663	27,026
Total cash and cash equivalents at beginning of period	102,178	113,688
Total cash and cash equivalents at end of period	$ 119,841	$ 140,714