Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Sales:
Product	$ 14,863	$ 15,382
Service	25,348	24,998
Net sales	40,211	40,380
Costs and expenses:
Costs of product sales	10,539	10,670
Costs of service sales	13,268	12,991
Research and development	3,947	3,783
Sales, marketing and support	8,740	8,658
General and administrative	8,187	7,652
Total costs and expenses	44,681	43,754
Loss from operations	(4,470)	(3,374)
Interest income	166	105
Interest expense	353	375
Other expense, net	(68)	(77)
Loss before income tax expense (benefit)	(4,725)	(3,721)
Income tax expense (benefit)	160	(930)
Net income (loss)	$ (4,885)	$ (2,791)
Net loss per common share
Earnings Per Share, Basic and Diluted	$ (0.30)	$ (0.18)
Weighted average number of common shares outstanding:
Weighted Average Number of Shares Outstanding, Basic	16,261	15,723
Weighted Average Number of Shares Outstanding, Basic and Diluted		15,723
Diluted	16,261	15,723