Quarterly report pursuant to Section 13 or 15(d)

Income Tax - Additional Information (Detail)

v3.7.0.1
Income Tax - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Income Tax Holiday [Line Items]    
Income tax (expense) benefit $ (32) $ (47)
Effective income tax rate reconciliation, at federal statutory income tax rate, Percent 35.00%  
Effective income tax rate reconciliation, State and local income taxes, Percent 5.00%  
Maximum [Member]    
Income Tax Holiday [Line Items]    
Income tax (expense) benefit $ 100 $ 100