Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v3.3.1.900
Summary of Significant Accounting Policies - Additional Information (Detail)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
Entity
Dec. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
Jun. 30, 2014
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
Customer
Entity
Dec. 31, 2014
USD ($)
Customer
Dec. 31, 2013
USD ($)
Customer
$ / shares
Dec. 31, 2012
USD ($)
Schedule Of Significant Accounting Policies [Line Items]                  
Operating income (loss)           $ (11,615) $ (15,503) $ 21,559  
Net (loss) income $ 3,900 $ 110 $ (3,257) $ (6,291) $ (836) $ (9,218) $ (10,274) $ 20,692 $ 20,692
Number of customer accounted for 10% or more of revenue | Customer           0 0 0  
Bed debt expense           $ 2,000 $ 1,500 $ 2,100  
Primary sources of revenue | Entity 3         3      
Revenue recognition access period (in years)           3 years      
Renewal of additional term license (in years)           1 year      
Advertising costs           $ 16,300 15,100 11,400  
Increase (decrease) in deferred tax liabilities $ 24,901 32,641       $ 24,901 32,641    
Minimum | Software and Software Development Costs                  
Schedule Of Significant Accounting Policies [Line Items]                  
Property plant and equipment, useful life (in years)           3 years      
Maximum | Software and Software Development Costs                  
Schedule Of Significant Accounting Policies [Line Items]                  
Property plant and equipment, useful life (in years)           5 years      
Revised Estimated Useful Lives of Data Processing Equipment and Internally Developed Software                  
Schedule Of Significant Accounting Policies [Line Items]                  
Operating income (loss)               3,500  
Net (loss) income               $ 1,900  
Increase in basic and diluted earnings per share | $ / shares               $ 0.03  
Length of Expected Customer Benefit of License Fees Billed at Initial Order Date                  
Schedule Of Significant Accounting Policies [Line Items]                  
Operating income (loss)               $ 2,800  
Net (loss) income               $ 1,500  
Increase in basic and diluted earnings per share | $ / shares               $ 0.02  
North America                  
Schedule Of Significant Accounting Policies [Line Items]                  
Net long-lived assets 77,400 66,500       $ 77,400 66,500    
International Subsidiaries                  
Schedule Of Significant Accounting Policies [Line Items]                  
Net long-lived assets $ 4,800 6,100       $ 4,800 $ 6,100    
Revenues                  
Schedule Of Significant Accounting Policies [Line Items]                  
Percentage of revenues           4.60% 4.90% 3.40%  
Early Adoption | Current Assets                  
Schedule Of Significant Accounting Policies [Line Items]                  
Increase (decrease) in net current deferred tax assets   (11,000)         $ (11,000)    
Increase (decrease) in deferred tax liabilities   (5,200)         (5,200)    
Early Adoption | Noncurrent Assets                  
Schedule Of Significant Accounting Policies [Line Items]                  
Increase (decrease) in net current deferred tax assets   11,000         11,000    
Increase (decrease) in deferred tax liabilities   $ 5,200         $ 5,200