Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Revenues	$ 15,103us-gaap_Revenues	$ 18,661us-gaap_Revenues
Costs and expenses:
Cost of sales	8,437us-gaap_CostOfRevenue	10,810us-gaap_CostOfRevenue
Selling, general and administrative	8,203	8,744
Research and development	872us-gaap_ResearchAndDevelopmentExpense	244us-gaap_ResearchAndDevelopmentExpense
Costs and expenses:	17,512us-gaap_CostsAndExpenses	19,798us-gaap_CostsAndExpenses
Operating loss	(2,409)us-gaap_OperatingIncomeLoss	(1,137)us-gaap_OperatingIncomeLoss
Interest expense	(27)us-gaap_InterestExpense	(29)us-gaap_InterestExpense
Interest income	7us-gaap_InvestmentIncomeInterest	11us-gaap_InvestmentIncomeInterest
Other expense	(96)us-gaap_OtherNonoperatingIncomeExpense	(30)us-gaap_OtherNonoperatingIncomeExpense
Loss before income taxes	(2,525)	(1,185)
Income tax benefit	871us-gaap_IncomeTaxExpenseBenefit	99us-gaap_IncomeTaxExpenseBenefit
Net loss	$ (1,654)us-gaap_NetIncomeLoss	$ (1,086)us-gaap_NetIncomeLoss
Net loss per common share:
Basic (in dollars per share)	$ (0.07)us-gaap_EarningsPerShareBasic	$ (0.05)us-gaap_EarningsPerShareBasic
Diluted (in dollars per share)	$ (0.07)us-gaap_EarningsPerShareDiluted	$ (0.05)us-gaap_EarningsPerShareDiluted
Weighted-average number of common shares outstanding:
Basic (in shares)	22,927	22,641
Diluted (in shares)	22,927	22,641

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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