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Schedule of Fair Value of Option Units Weighted Average Assumptions (Detail) - Netsmart [Member] - Class B Non Voting Common Units
12 Months Ended
Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Average expected term in years 6 years 3 months 22 days
Risk free rate (weighted average) 2.30%
Expected dividends 0.00%
Average volatility 53.70%