Annual report pursuant to Section 13 and 15(d)

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

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Income Taxes - Summary of Provision (Benefit) for Income Taxes (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Current expense:      
Federal $ 13,415 $ 20,924 $ 19,802
State 5,293 6,804 6,503
Total current expense 18,708 27,728 26,305
Deferred expense (benefit):      
Federal 3,428 14,623 4,410
State 3,966 (1,727) 2,184
Total deferred expense 7,394 12,896 6,594
Provision for income taxes $ 26,102 $ 40,624 $ 32,899