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Consolidated Statements Of Operations And Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Products	$ 27,396	$ 27,018
Preservation services	17,663	15,998
Total revenues	45,059	43,016
Cost of products and preservation services:
Products	8,017	7,003
Preservation services	7,530	8,392
Total cost of products and preservation services	15,547	15,395
Gross margin	29,512	27,621
Operating expenses:
General, administrative, and marketing	22,871	26,274
Research and development	4,093	2,609
Total operating expenses	26,964	28,883
Gain from sale of business components		(7,915)
Operating income	2,548	6,653
Interest expense	801	717
Interest income	(40)	(12)
Other expense (income), net	43	(109)
Income before income taxes	1,744	6,057
Income tax (benefit) expense	(479)	3,516
Net income	$ 2,223	$ 2,541
Income per common share:
Basic	$ 0.07	$ 0.08
Diluted	$ 0.06	$ 0.08
Weighted-average common shares outstanding:
Basic	32,439	31,029
Diluted	33,604	31,771
Other comprehensive income (loss)	$ 236	$ (96)
Comprehensive income	$ 2,459	$ 2,445

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