Segments and Customer Concentrations - Additional Information (Detail)
12 Months Ended
Dec. 31, 2015
segment
customer
Dec. 31, 2014
customer
Dec. 31, 2013
customer
Segment Reporting Information [Line Items]      
Number of reportable segments | segment 1    
Sales | Customer Concentration Risk | Ascension Affiliated Hospitals      
Segment Reporting Information [Line Items]      
Concentration percentage 45.00% 12.00% 73.00%
Sales | Customer Concentration Risk | Ascension Affiliated Hospitals | Affiliate      
Segment Reporting Information [Line Items]      
Concentration percentage 45.00% 12.00% 28.00%
Deferred customer billings | Customer Concentration Risk | The large health system      
Segment Reporting Information [Line Items]      
Concentration percentage 75.00% 76.00% 55.00%
RCM Service Fees | Minimum      
Segment Reporting Information [Line Items]      
Number of individual customers 25 25 25
Accumulated period on revenue recognition cash flows 3 years    
RCM Service Fees | Maximum      
Segment Reporting Information [Line Items]      
Number of individual customers 30 30 30
Accumulated period on revenue recognition cash flows 5 years