Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities
Net loss	$ (20,184)	$ (68,002)	$ (139,805)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Impairment of intangible assets	0	5,758	110,364
Impairment of long-lived assets	0	9,727	0
Gain on settlement of Global Cooling escrow	0	(5,115)	0
Depreciation	5,160	7,114	6,775
Amortization of intangible assets	3,501	5,181	9,697
Amortization of loan costs	0	13	18
Stock-based compensation	30,923	33,245	25,334
Non-cash lease expense	424	404	3,486
Deferred income tax benefit	(64)	(62)	(5,238)
Change in fair value of contingent consideration	0	(2,193)	(4,754)
Change in fair value of investments	4,074	0	(697)
Accretion of investments	(474)	(1,262)	(447)
Loss on disposal of assets held for rent, net	567	594	773
Loss on disposal of property and equipment, net	154	633	745
Net gain on disposal of subsidiaries	(15,877)	0	0
Other	0	0	166
Change in operating assets and liabilities
Accounts receivable, trade, net	(2,899)	15,351	(10,753)
Inventories	781	(8,552)	(6,559)
Prepaid expenses and other current assets	(2,407)	137	26
Accounts payable	26	(8,425)	414
Accrued expenses and other current liabilities	6,485	2,002	1,787
Sales taxes payable	(973)	1,311	1,526
Warranty liability	(528)	(454)	(1,086)
Other	(258)	97	(260)
Net cash provided by (used in) operating activities	8,431	(12,498)	(8,488)
Cash flows from investing activities
Purchases of property and equipment	(3,227)	(6,381)	(10,385)
Purchases of assets held for rent	(2,068)	(4,856)	(3,536)
Proceeds from sale of available-for-sale securities	3,518	3,469	420
Maturities of available-for-sale securities	18,400	52,700	8,500
Investment in available-for-sale securities	(18,415)	(27,095)	(53,116)
Purchases of intangible assets	(300)	0	0
Proceeds from sale of SciSafe and CBS	73,431	0	0
Payments on divestiture of Global Cooling	(13,039)	0	0
Net cash provided by (used in) investing activities	58,300	17,837	(58,117)
Cash flows from financing activities
Proceeds from term loan	0	0	20,000
Payments on term loan	(5,000)	(300)	(1,666)
Payments on equipment loans	(1,608)	(198)	(498)
Issuance of common stock	0	10,244	0
Fees paid related to issuance of common stock	0	0	(131)
Proceeds from exercise of common stock options	202	507	323
Proceeds from financed insurance premium	2,094	2,639	0
Payments on financed insurance premium	(2,397)	(2,365)	(1,375)
Other	(74)	64	(337)
Net cash (used in) provided by financing activities	(6,783)	10,591	16,316
Net increase in cash and cash equivalents	59,948	15,930	(50,289)
Cash and cash equivalents – beginning of period	35,438	19,473	69,870
Effects of currency translation on cash and cash equivalents	0	35	(108)
Cash and cash equivalents – end of period	95,386	35,438	19,473
Non-cash investing and financing activities
Assets acquired under operating leases	5,833	880	243
Assets acquired under finance leases	0	1,682	0
Purchase of property and equipment not yet paid	107	359	478
Unrealized (gain) loss on available-for-sale securities	(18)	(56)	50
Unrealized gain on currency translation	0	(12)	0
Stock issued as consideration for SciSafe earnout	0	2,263	817
Returned shares from settlement of Global Cooling escrow	0	(5,115)	0
Cash interest paid	$ 1,608	$ 1,927	$ 586