Annual report pursuant to Section 13 and 15(d)

Income Taxes - Recon of Beginning and Ending Amount of Unrecognized Tax Benefits (UTB's) (Detail)

v3.6.0.2
Income Taxes - Recon of Beginning and Ending Amount of Unrecognized Tax Benefits (UTB's) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Gross UTB's, Beginning balance $ 245 $ (141)
Additions for tax positions taken in a prior year (102)  
Additions for tax positions taken in the current year 206  
Gross UTB's, Ending balance $ 245 $ (141)