Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Total product, rental, and service revenue	$ 30,571	$ 23,573	$ 85,678	$ 81,992
Costs and operating expenses:
General and administrative	11,351	10,813	33,953	37,568
Sales and marketing	3,543	4,876	10,401	12,731
Research and development	2,050	3,739	6,827	10,772
Asset impairment charges	0	8,310	0	8,310
Intangible asset amortization	910	1,312	2,734	4,135
Change in fair value of contingent consideration	0	(1,580)	0	(1,778)
Total operating expenses	32,130	39,048	94,193	116,727
Operating loss	(1,559)	(15,475)	(8,515)	(34,735)
Other (expense) income:
Change in fair value of equity investments	0	0	(4,074)	0
Gain on settlement of Global Cooling escrow	0	0	0	5,115
Interest expense, net	(267)	(449)	(796)	(1,216)
Other income	95	235	417	1,002
Total other (expense) income, net	(172)	(214)	(4,453)	4,901
Loss before income tax benefit (expense)	(1,731)	(15,689)	(12,968)	(29,834)
Income tax benefit (expense)	28	(115)	(93)	(209)
Net loss from continuing operations	(1,703)	(15,804)	(13,061)	(30,043)
Discontinued operations:
Loss from discontinued operations	0	(13,328)	(19,572)	(22,999)
Income tax expense	0	0	(10)	(3)
Loss from discontinued operations	0	(13,328)	(19,582)	(23,002)
Net loss	(1,703)	(29,132)	(32,643)	(53,045)
Loss from continuing operations, attributable to common shareholders:
Basic	(1,703)	(15,804)	(13,061)	(30,043)
Diluted	(1,703)	(15,804)	(13,061)	(30,043)
Loss from discontinued operations, attributable to common shareholders:
Basic	0	(13,328)	(19,582)	(23,002)
Diluted	$ 0	$ (13,328)	$ (19,582)	$ (23,002)
Loss per share from continuing operations, attributable to common shareholders:
Basic (in dollars per share)	$ (0.04)	$ (0.36)	$ (0.28)	$ (0.69)
Diluted (in dollars per share)	(0.04)	(0.36)	(0.28)	(0.69)
Loss per share from discontinued operations, attributable to common shareholders:
Basic (in dollars per share)	0	(0.31)	(0.43)	(0.53)
Diluted (in dollars per share)	$ 0	$ (0.31)	$ (0.43)	$ (0.53)
Net loss attributable to common shareholders:
Basic	$ (1,703)	$ (29,132)	$ (32,643)	$ (53,045)
Diluted	$ (1,703)	$ (29,132)	$ (32,643)	$ (53,045)
Net loss per share attributable to common shareholders:
Basic (in dollars per share)	$ (0.04)	$ (0.67)	$ (0.71)	$ (1.22)
Diluted (in dollars per share)	$ (0.04)	$ (0.67)	$ (0.71)	$ (1.22)
Weighted average shares used to compute loss per share attributable to common shareholders:
Basic (in shares)	46,175,345	43,570,438	45,871,715	43,348,412
Diluted (in shares)	46,175,345	43,570,438	45,871,715	43,348,412
Product revenue
Total product, rental, and service revenue	$ 23,457	$ 17,137	$ 64,624	$ 63,444
Costs and operating expenses:
Cost of goods and services sold (exclusive of intangible assets amortization)	8,765	6,572	25,163	29,223
Service revenue
Total product, rental, and service revenue	4,660	4,377	14,173	12,573
Costs and operating expenses:
Cost of goods and services sold (exclusive of intangible assets amortization)	3,401	3,937	10,247	11,624
Rental revenue
Total product, rental, and service revenue	2,454	2,059	6,881	5,975
Costs and operating expenses:
Cost of goods and services sold (exclusive of intangible assets amortization)	$ 2,110	$ 1,069	$ 4,868	$ 4,142