Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net income	$ 50,493	$ (67,132)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	9,044	10,442
Gain on disposals of assets, net	421	89
Impairment of goodwill	482	0
Impairment of other noncurrent assets	638	543
Gain on sale of discontinued operations	(94,702)	0
Gain on debt retirement	(1,285)	0
Amortization of premiums on investments, net	667	893
Equity in net (income) loss of affiliates	(861)	3
Stock-based compensation expense	7,996	11,462
Shares issued as payment for services	576	577
Provision for credit losses	944	1,219
Accretion of debt discount and amortization of deferred financing costs	934	8,641
Deferred income taxes	(162)	(180)
Noncash gain on termination of operating leases	0	(4,602)
Other noncash items	105	0
Receivables:
Trade	(2,446)	(5,285)
Related parties	54	(47)
Other	230	(610)
Inventory	2,408	1,422
Prepaid expenses and other	(1,305)	(388)
Other assets	(1)	282
Accounts payable	728	(678)
Accrued compensation and benefits	(578)	(304)
Other accrued liabilities	(479)	1,505
Deferred revenue	(23,343)	903
Lease liabilities	(79)	107
Related party payables	(78)	4
Other long-term liabilities	(50)	(50)
Net cash used in operating activities	(49,649)	(41,182)
Cash flows from investing activities
Purchases of investments	0	(174,221)
Sales and maturities of investments	56,967	82,000
Purchases of property, plant and equipment	(4,871)	(4,474)
Proceeds from sale of assets	594	2,537
Proceeds from sale of discontinued operations	162,306	0
Proceeds from repayment of notes receivable	0	3,689
Net cash provided by (used in) investing activities	214,996	(90,469)
Cash flows from financing activities
Proceeds from issuance of shares, net of issuance costs	0	121,045
Repurchase of Convertible Notes	(115,658)	0
Payments of long-term debt	(353)	(351)
Proceeds from stock option exercises	1	603
Net cash (used in) provided by financing activities	(116,010)	121,297
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(804)	264
Net increase (decrease) in cash, cash equivalents, and restricted cash	48,533	(10,090)
Cash, cash equivalents, and restricted cash
Beginning of period	43,343	52,250
End of period	91,876	42,160
Supplemental disclosure of cash flow information
Cash paid during the period for interest	8,187	7,116
Cash paid during the period for income taxes	0	4
Significant noncash activities
Accrued compensation paid in equity awards	1,698	0
Purchases of property and equipment included in accounts payable and other accrued liabilities	199	108
Proceeds from sale of assets included in accounts receivable	147	124
Cash, cash equivalents, and restricted cash
Cash and cash equivalents	9,067
Restricted cash	82,443
Cash and cash equivalents included in current assets held for sale	0
Restricted cash included in other assets	366
Cash, cash equivalents, and restricted cash	$ 91,876	$ 42,160