Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities
Net loss	$ (96,520)	$ (65,549)
Adjustments to reconcile net loss to net cash and cash equivalents from operating activities:
Depreciation and amortization	16,464	11,962
Amortization of right-of-use assets	900	768
Loss on sales of property, plant, and equipment	1,957
Loss on extinguishment of note receivable	760
Share of net loss of equity method investee	133
Stock-based compensation expense	11,972	10,370
Change in fair value of warrant liabilities	4,508	(4,890)
Accretion of discounts on other long-term liabilities	78	174
Amortization of premiums and accretion of discounts on available-for-sale-securities	(7,829)	(10,975)
Change in operating assets and liabilities that provided (used) cash and cash equivalents:
Contract receivables	160	(31)
Contract receivables from related parties		319
Prepaid expenses and other assets	710	(1,510)
Accounts payable and other accrued liabilities	1,268	1,814
Deferred revenue	3,150	(50)
Deferred revenue from related parties	(828)	(3,172)
Accrued compensation	(11)	3,058
Operating lease liabilities	(771)	(549)
Net cash and cash equivalents used in operating activities	(63,899)	(58,261)
Cash Flows from Investing Activities
Purchases of property, plant and equipment	(15,942)	(34,512)
Purchases of available-for-sale securities	(216,193)	(327,591)
Proceeds from sales of available-for-sale securities	302,966	405,161
Proceeds from sales of property, plant and equipment	77
Cash paid for loan receivable from equity method investee	(5,610)
Cash paid for equity method investment	(656)
Purchases of intangible assets	(438)	(556)
Net cash and cash equivalents provided by investing activities	64,204	42,502
Cash Flows from Financing Activities
Payments of debt		(7)
Proceeds from exercise of stock options	273	220
Proceeds from issuance of shares of common stock under the ESPP	412	434
Cash paid for withholding of employee taxes related to stock-based compensation	(615)	(112)
Repurchase of shares of common stock	(9,072)
Payments on finance lease liabilities	(427)	(362)
Net cash and cash equivalents provided by (used in) financing activities	(9,429)	173
Net decrease in cash and cash equivalents	(9,124)	(15,586)
Cash and cash equivalents at beginning of period	34,537	50,123
Cash and cash equivalents at end of period	25,413	34,537
Supplemental information
Cash paid for interest	46	84
Accrued capital expenditures	$ 1,196	$ 814