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Capitalized Software Development Costs (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Capitalized Software Development Costs [Line Items]      
Document Period End Date Jun. 30, 2017    
Capitalized Computer Software, Additions $ 1,345    
Capitalized Software Development Costs for Software Sold to Customers 6,602   $ 5,955
Capitalized Computer Software, Amortization $ 790 $ 654  
Continuing Medical Education Products [Member]      
Capitalized Software Development Costs [Line Items]      
Capitalized Computer Software, amortization period 5 years