Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.5.0.2
Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Operating Loss Carryforwards [Line Items]        
Provision (benefit) for income taxes for continuing operations $ 8,248,000 $ 10,569,000 $ 23,288,000 $ 27,722,000
Effective income tax rate 38.60% 43.10% 35.60% 41.60%
Valuation allowance $ 0   $ 0  
Tax Year 2014 [Member]        
Operating Loss Carryforwards [Line Items]        
Provision (benefit) for income taxes for continuing operations     $ 1,800,000