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Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Sales:
Product	$ 19,020	$ 15,622	$ 54,464	$ 48,954
Service	26,826	28,833	77,728	81,661
Net sales	45,846	44,455	132,192	130,615
Costs and expenses:
Costs of product sales	11,001	10,275	34,660	32,777
Costs of service sales	13,576	14,454	39,826	41,407
Research and development	3,940	3,472	11,760	10,704
Sales, marketing and support	7,978	7,889	25,870	24,251
General and administrative	6,338	8,159	21,130	23,436
Total costs and expenses	42,833	44,249	133,246	132,575
Income (loss) from operations	3,013	206	(1,054)	(1,960)
Interest income	130	129	353	421
Interest expense	353	363	1,081	1,097
Other (expense) income, net	(56)	(382)	11	654
Income (loss) before income tax expense (benefit)	2,734	(410)	(1,771)	(1,982)
Income tax (benefit) expense	(129)	53	(1,037)	(134)
Net income (loss)	$ 2,863	$ (463)	$ (734)	$ (1,848)
Net income (loss) per common share
Earnings Per Share, Basic and Diluted	$ 0.18	$ (0.03)	$ (0.05)	$ (0.12)
Earnings Per Share, Diluted	$ 0.18	$ (0.03)	$ (0.05)	$ (0.12)
Weighted average number of common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic	15,845	15,661	15,798	15,608
Weighted Average Number of Shares Outstanding, Basic and Diluted		15,661		15,608
Diluted	15,915	15,661	15,798	15,608

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