Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.10.0.1
Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 01, 2018
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Operating Loss Carryforwards [Line Items]            
Provision (benefit) for income taxes for continuing operations   $ 5,901 $ 9,057 $ 11,625 $ 17,685  
Effective income tax rate   27.50% 38.50% 27.70% 38.50%  
Valuation allowance   $ 2,800   $ 2,800   $ 2,800
Net deferred tax asset   35,500   35,500   32,500
Net current tax asset   $ 4,000   $ 4,000   $ 5,800
ASU 2018-02 [Member]            
Operating Loss Carryforwards [Line Items]            
Impact on retained earnings of adopting recent accounting pronouncement $ 399