Annual report pursuant to Section 13 and 15(d)

Income Taxes - components of the income tax provision (benefit) (Detail)

v3.8.0.1
Income Taxes - components of the income tax provision (benefit) (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current              
Federal         $ 1,074 $ 0  
State         439 0  
Deferred              
Federal         0 0  
State         0 0  
Total $ 1,513 $ 0 $ 0 $ 0 $ 1,513 $ 0 $ 0