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Summary of Significant Accounting Policies (Details)
12 Months Ended
Dec. 31, 2015
USD ($)
segment
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Number of reportable segments for goodwill purposes | segment 1    
Deferred Finance Costs [Abstract]      
Write off of deferred financing costs $ 200,000 $ 400,000 $ 200,000
Revenue Recognition [Abstract]      
Maintenance agreements revenue recognition period 1 year    
Advertising expenses $ 347,000 283,000 175,000
Foreign currency transaction losses $ 515,000 2,000 550,000
New Accounting Pronouncement, Early Adoption, Effect [Member] | Other Noncurrent Assets [Member]      
Revenue Recognition [Abstract]      
Debt issuance costs   (100,000)  
New Accounting Pronouncement, Early Adoption, Effect [Member] | Notes payable [Member]      
Revenue Recognition [Abstract]      
Debt issuance costs   100,000  
Minimum [Member]      
Revenue Recognition [Abstract]      
Subscription and support revenue recognition period 1 year    
Hosting services arrangement period 1 year    
Maximum [Member]      
Revenue Recognition [Abstract]      
Subscription and support revenue recognition period 3 years    
Hosting services arrangement period 3 years    
Trade Names [Member]      
Property, Plant and Equipment [Abstract]      
Impairment of intangible asset $ 0 $ 0 $ 1,100,000
Computer Equipment [Member] | Minimum [Member]      
Property, Plant and Equipment [Abstract]      
Estimated useful life 3 years    
Computer Equipment [Member] | Maximum [Member]      
Property, Plant and Equipment [Abstract]      
Estimated useful life 5 years    
Purchased Software and Licenses [Member] | Minimum [Member]      
Property, Plant and Equipment [Abstract]      
Estimated useful life 3 years    
Purchased Software and Licenses [Member] | Maximum [Member]      
Property, Plant and Equipment [Abstract]      
Estimated useful life 5 years    
Furniture and Fixtures [Member]      
Property, Plant and Equipment [Abstract]      
Estimated useful life 7 years