Acquisition (Details) (USD $)			12 Months Ended	0 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Developed Technology Rights [Member]	Jul. 02, 2013 Mirror42 Holding B.V. [Member]	Jul. 02, 2013 Mirror42 Holding B.V. [Member] Developed Technology Rights [Member]	Dec. 31, 2013 Mirror42 Holding B.V. [Member] Contract-Based Intangible Assets [Member]	Jul. 02, 2013 Mirror42 Holding B.V. [Member] Contract-Based Intangible Assets [Member]	Dec. 31, 2013 Mirror42 Holding B.V. [Member] Noncompete Agreements [Member]	Jul. 02, 2013 Mirror42 Holding B.V. [Member] Noncompete Agreements [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired				$ 13,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				(595,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill					5,530,000		297,000		31,000
Intangible Assets Useful Life			4 years			1 year 6 months		1 year 6 months
Goodwill	8,724,000	0		8,218,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent				(139,000)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				13,342,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 8,100,000