Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.7.0.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Operating Loss Carryforwards [Line Items]          
Provision (benefit) for income taxes for continuing operations $ 9,057 $ 8,857 $ 17,685 $ 15,040  
Effective income tax rate 38.50% 38.50% 38.50% 34.20%  
Valuation allowance $ 1,000   $ 1,000   $ 1,000
Tax Year 2014 [Member]          
Operating Loss Carryforwards [Line Items]          
Provision (benefit) for income taxes for continuing operations     $ 1,800