Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail)

v3.8.0.1
Income Taxes - Schedule of Provision (Benefit) for Income Taxes (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income (loss) before provision for income taxes:      
Income before provision for income taxes $ 99,226 $ 107,102 $ 113,368
Federal:      
Current 28,993 36,228 39,895
Deferred 13,249 (337) (1,853)
Provision for Income Taxes, Federal 42,242 35,891 38,042
State:      
Current 5,883 6,700 7,058
Deferred (423) (146) 1,918
Provision for Income Taxes, State 5,460 6,554 8,976
Provision for income taxes 47,702 42,445 47,018
United States [Member]      
Income (loss) before provision for income taxes:      
Income before provision for income taxes 100,031 108,797 116,448
Foreign [Member]      
Income (loss) before provision for income taxes:      
Income before provision for income taxes $ (805) $ (1,695) $ (3,080)