Consolidated Statements Of Operations And Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Total revenues	$ 61,948	$ 45,059
Cost of products and preservation services:
Products	14,157	8,017
Preservation services	8,563	7,530
Total cost of products and preservation services	22,720	15,547
Gross margin	39,228	29,512
Operating expenses:
General, administrative, and marketing	37,348	22,871
Research and development	5,370	4,093
Total operating expenses	42,718	26,964
Operating (loss) income	(3,490)	2,548
Interest expense	3,656	801
Interest income	(59)	(40)
Other (income) expense, net	(181)	43
(Loss) income before income taxes	(6,906)	1,744
Income tax benefit	(3,051)	(479)
Net (loss) income	$ (3,855)	$ 2,223
(Loss) income per common share:
Basic	$ (0.11)	$ 0.07
Diluted	$ (0.11)	$ 0.06
Weighted-average common shares outstanding:
Basic	36,146	32,439
Diluted	36,146	33,604
Other comprehensive income (loss)	$ 7,139	$ 236
Comprehensive income	3,284	2,459
Products [Member]
Revenues:
Total revenues	43,598	27,396
Preservation Services [Member]
Revenues:
Total revenues	$ 18,350	$ 17,663