Unaudited Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total product, rental, and service revenue	$ 28,328	$ 29,237	$ 55,107	$ 58,419
Costs and operating expenses:
General and administrative	10,894	13,540	22,604	26,755
Sales and marketing	3,502	3,831	6,858	7,855
Research and development	2,382	3,793	4,776	7,033
Intangible asset amortization	910	1,406	1,824	2,823
Change in fair value of contingent consideration	0	(918)	0	(198)
Total operating expenses	31,123	39,865	62,063	77,679
Operating loss	(2,795)	(10,628)	(6,956)	(19,260)
Other (expense) income:
Change in fair value of equity investments	(4,074)	0	(4,074)	0
Gain on settlement of Global Cooling escrow	0	5,115	0	5,115
Interest expense, net	(361)	(387)	(529)	(767)
Other income	84	384	322	767
Total other (expense) income, net	(4,351)	5,112	(4,281)	5,115
Loss before income tax expense	(7,146)	(5,516)	(11,237)	(14,145)
Income tax expense	0	(2)	(121)	(94)
Net loss from continuing operations	(7,146)	(5,518)	(11,358)	(14,239)
Discontinued operations:
Loss from discontinued operations	(13,573)	(4,678)	(19,572)	(9,671)
Income tax expense	0	(3)	(10)	(3)
Loss from discontinued operations	(13,573)	(4,681)	(19,582)	(9,674)
Net loss	(20,719)	(10,199)	(30,940)	(23,913)
Loss from continuing operations, attributable to common shareholders:
Basic	(7,146)	(5,518)	(11,358)	(14,239)
Diluted	(7,146)	(5,518)	(11,358)	(14,239)
Loss from discontinued operations, attributable to common shareholders:
Basic	(13,573)	(4,681)	(19,582)	(9,674)
Diluted	$ (13,573)	$ (4,681)	$ (19,582)	$ (9,674)
Loss per share from continuing operations, attributable to common shareholders:
Basic (in dollars per share)	$ (0.16)	$ (0.12)	$ (0.25)	$ (0.33)
Diluted (in dollars per share)	(0.16)	(0.12)	(0.25)	(0.33)
Loss per share from discontinued operations, attributable to common shareholders:
Basic (in dollars per share)	(0.30)	(0.11)	(0.43)	(0.22)
Diluted (in dollars per share)	$ (0.30)	$ (0.11)	$ (0.43)	$ (0.22)
Net loss attributable to common shareholders:
Net loss from continuing operations allocated to common shareholders	$ (20,719)	$ (10,199)	$ (30,940)	$ (23,913)
Net loss from continuing operations allocated to common shareholders	$ (20,719)	$ (10,199)	$ (30,940)	$ (23,913)
Net loss per share attributable to common shareholders:
Basic (in dollars per share)	$ (0.45)	$ (0.23)	$ (0.68)	$ (0.55)
Diluted (in dollars per share)	$ (0.45)	$ (0.23)	$ (0.68)	$ (0.55)
Weighted average shares used to compute loss per share attributable to common shareholders:
Basic (in shares)	46,004,037	43,441,219	45,718,232	43,235,558
Diluted (in shares)	46,004,037	43,441,219	45,718,232	43,235,558
Product revenue
Total product, rental, and service revenue	$ 21,310	$ 22,786	$ 41,167	$ 46,307
Costs and operating expenses:
Cost of goods and services sold (exclusive of intangible assets amortization)	8,614	12,480	16,398	22,651
Service revenue
Total product, rental, and service revenue	4,427	4,175	9,513	8,197
Costs and operating expenses:
Cost of goods and services sold (exclusive of intangible assets amortization)	3,327	4,036	6,846	7,687
Rental revenue
Total product, rental, and service revenue	2,591	2,276	4,427	3,915
Costs and operating expenses:
Cost of goods and services sold (exclusive of intangible assets amortization)	$ 1,494	$ 1,697	$ 2,757	$ 3,073