Statements of Operations and Comprehensive Income (Loss) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (LOSS)
Revenues	$ 25,448	$ 25,137	$ 78,299	$ 77,317
Cost of product revenues (exclusive of items shown separately below)	14,006	13,838	42,818	41,669
Gross profit	11,442	11,299	35,481	35,648
Sales and marketing expenses	4,113	4,174	13,102	13,106
General and administrative expenses	4,130	4,646	12,378	13,227
Research and development expenses	1,059	1,101	3,316	3,036
HART transaction costs	0	268	0	1,788
Restructuring charges (credits)	97	96	349	51
Amortization of intangible assets	618	600	1,839	1,955
Total Operating Expenses	10,017	10,885	30,984	33,163
Operating income	1,425	414	4,497	2,485
Other (expense) income:
Foreign exchange	0	(84)	(148)	(74)
Interest expense	(239)	(276)	(752)	(650)
Interest income	19	10	45	28
Other income (expense), net	(249)	(7)	(397)	(87)
Other expense, net	(469)	(357)	(1,252)	(783)
Income from continuing operations before income taxes	956	57	3,245	1,702
Total Income Tax Expense	323	105	871	725
Income from continuing operations	633	(48)	2,374	977
Discontinued Operations [Abstract]
Loss from Discontinued Operations, Net of Tax, Attributable to Parent	0	(935)	0	(2,051)
Net income (loss)	633	(983)	2,374	(1,074)
Earnings (loss) per share:
Basic earnings per common share from continuing operations	$ 0.02	$ 0	$ 0.07	$ 0.03
Discontinued operations	$ 0	$ (0.03)	$ 0	$ (0.07)
Basic earnings per common share	$ 0.02	$ (0.03)	$ 0.07	$ (0.04)
Diluted earnings per common share from continuing operations	$ 0.02	$ 0	$ 0.07	$ 0.03
Discontinued operations	$ 0	$ (0.03)	$ 0	$ (0.06)
Diluted Earnings Per Common Share	$ 0.02	$ (0.03)	$ 0.07	$ (0.03)
Weighted average common shares:
Basic	32,341,586	30,574,815	32,079,744	30,154,788
Diluted	33,414,857	30,574,815	33,097,012	31,762,466
Comprehensive Income Net Of Tax [Abstract]
Net income (loss)	633	(983)	2,374	(1,074)
Unrealized losses on pension benefit obligation, net of tax	0	0	(484)	0
Foreign currency translation adjustments	(3,168)	2,381	(2,584)	540
Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease [Abstract]
Loss on derivative instruments designated and qualifying as cash flow hedges	23	(23)	(57)	(69)
Amounts reclassified from accumulated other comprehensive income to net income	31	29	100	26
Total Comprehensive Income (Loss), Net of Tax, total	$ (2,481)	$ 1,404	$ (651)	$ (577)