Condensed Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues:
Total revenues	$ 72,207	$ 65,131	$ 219,442	$ 185,331
Cost of products and preservation services:
Total cost of products and preservation services	24,418	21,999	73,302	62,138
Gross margin	47,789	43,132	146,140	123,193
Operating expenses:
General, administrative, and marketing	39,053	33,743	118,521	105,033
Research and development	9,972	5,755	26,086	17,633
Total operating expenses	49,025	39,498	144,607	122,666
Gain from sale of non-financial assets	(15,923)		(15,923)
Operating income	14,687	3,634	17,456	527
Interest expense	4,100	4,940	12,995	11,980
Interest income	(18)	(13)	(60)	(181)
Other expense, net	2,661	2,888	3,261	5,810
Income (loss) before income taxes	7,944	(4,181)	1,260	(17,082)
Income tax benefit	(2,638)	(1,311)	(4,006)	(3,858)
Net income (loss)	$ 10,582	$ (2,870)	$ 5,266	$ (13,224)
Income (loss) per share:
Basic	$ 0.27	$ (0.08)	$ 0.13	$ (0.35)
Diluted	$ 0.26	$ (0.08)	$ 0.13	$ (0.35)
Weighted-average common shares outstanding:
Basic	39,086	37,912	38,924	37,608
Diluted	44,453	37,912	39,496	37,608
Net income (loss)	$ 10,582	$ (2,870)	$ 5,266	$ (13,224)
Other comprehensive income (loss):
Foreign currency translation adjustments	(5,010)	8,698	(12,327)	8,669
Comprehensive income (loss)	5,572	5,828	(7,061)	(4,555)
Products [Member]
Revenues:
Total revenues	53,107	45,109	162,528	128,797
Cost of products and preservation services:
Total cost of products and preservation services	15,503	12,998	46,592	36,078
Preservation Services [Member]
Revenues:
Total revenues	19,100	20,022	56,914	56,534
Cost of products and preservation services:
Total cost of products and preservation services	$ 8,915	$ 9,001	$ 26,710	$ 26,060