Consolidated Statements Of Operations And Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues:
Total revenues	$ 298,836	$ 253,227	$ 276,222
Cost of products and preservation services:
Total cost of products and preservation services	101,322	85,443	93,209
Gross margin	197,514	167,784	183,013
Operating expenses:
General, administrative, and marketing	169,774	141,136	143,011
Research and development	35,546	24,207	22,960
Total operating expenses	205,320	165,343	165,971
Gain from sale of non-financial assets	15,923
Operating income	8,117	2,441	17,042
Interest expense	16,887	16,698	14,886
Interest income	(79)	(217)	(738)
Other expense, net	6,136	3,134	1,250
(Loss) income before income taxes	(14,827)	(17,174)	1,644
Income tax expense (benefit)	7	(492)	(76)
Net (loss) income	$ (14,834)	$ (16,682)	$ 1,720
(Loss) income per share:
Basic	$ (0.38)	$ (0.44)	$ 0.05
Diluted	$ (0.38)	$ (0.44)	$ 0.05
Weighted-average common shares outstanding:
Basic	38,983	37,861	37,118
Diluted	38,983	37,861	37,860
Net (loss) income	$ (14,834)	$ (16,682)	$ 1,720
Other Comprehensive loss:
Foreign currency translation adjustments	(16,630)	15,332	(2,517)
Comprehensive loss	(31,464)	(1,350)	(797)
Products [Member]
Revenues:
Total revenues	221,597	179,299	197,246
Cost of products and preservation services:
Total cost of products and preservation services	65,196	50,128	55,022
Preservation Services [Member]
Revenues:
Total revenues	77,239	73,928	78,976
Cost of products and preservation services:
Total cost of products and preservation services	$ 36,126	$ 35,315	$ 38,187