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Consolidated Statements Of Operations And Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Products	$ 27,029	$ 28,004	$ 84,519	$ 85,067
Preservation services	16,970	17,248	52,357	50,284
Total revenues	43,999	45,252	136,876	135,351
Cost of products and preservation services:
Products	6,220	6,598	21,196	21,299
Preservation services	7,917	8,872	23,401	26,348
Total cost of products and preservation services	14,137	15,470	44,597	47,647
Gross margin	29,862	29,782	92,279	87,704
Operating expenses:
General, administrative, and marketing	24,756	20,592	71,016	69,302
Research and development	4,277	3,714	13,098	9,602
Total operating expenses	29,033	24,306	84,114	78,904
Gain from sale of business components				(7,915)
Operating income	829	5,476	8,165	16,715
Interest expense	851	742	2,486	2,256
Interest income	(64)	(18)	(159)	(48)
Other expense (income), net	21	21	(70)	(146)
Income before income taxes	21	4,731	5,908	14,653
Income tax (benefit) expense	(1,304)	1,738	(803)	6,772
Net income	$ 1,325	$ 2,993	$ 6,711	$ 7,881
Income per common share:
Basic	$ 0.04	$ 0.09	$ 0.20	$ 0.24
Diluted	$ 0.04	$ 0.09	$ 0.19	$ 0.24
Weighted-average common shares outstanding:
Basic	32,887	32,151	32,665	31,731
Diluted	34,057	33,165	33,851	32,568
Other comprehensive income (loss)	$ 217	$ (31)	$ 582	$ (459)
Comprehensive income	$ 1,542	$ 2,962	$ 7,293	$ 7,422

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