Annual report pursuant to Section 13 and 15(d)

Income Taxes - Additional Information (Detail)

v3.3.1.900
Income Taxes - Additional Information (Detail) - USD ($)
 12 Months Ended
Oct. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Taxes [Line Items]        
State and Canadian net operating losses (NOLs)   $ 5,700,000 $ 3,500,000  
State and Canadian net operating losses (NOLs), expiration year   2019 2019  
Valuation allowance, deferred tax assets   $ 1,300,000 $ 728,000  
Change in valuation allowance, deferred tax assets   $ 583,000 $ 442,000 $ 86,000
Tax computed at federal rate, percentage   35.00% 35.00% 35.00%
Reduction to income tax payable   $ 10,100,000 $ 6,900,000  
Tax benefit related to settlement of DSUs, RSAs and IPO transaction costs   6,200,000 5,200,000  
Uncertain tax positions   0 0  
Unrecognized tax benefits related interest or penalties   $ 0 0  
Income Tax Examination, Description   The Company is not currently under income tax examination by any taxing authorities.    
Undistributed earnings of foreign subsidiary   $ 0    
Tax sharing agreement termination date   Oct. 31, 2013    
Deferred tax assets, net transferred from parent prior to IPO $ 26,600,000 $ 35,285,000 $ 34,865,000 $ 26,572,000
Minimum [Member]        
Income Taxes [Line Items]        
Open tax years subject to tax examinations   2010    
Maximum [Member]        
Income Taxes [Line Items]        
Open tax years subject to tax examinations   2015    
Tax-sharing agreement [Member]        
Income Taxes [Line Items]        
Effective income tax rate, pre-IPO 43.50%   43.50% 43.50%
Tax sharing agreement termination date   Oct. 31, 2013