Quarterly report pursuant to Section 13 or 15(d)

Income Tax - Additional Information (Detail)

v3.3.0.814
Income Tax - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Income Tax Holiday [Line Items]        
Income tax (expense) benefit $ (24,000) $ (607,000) $ (77,000) $ 163,000
TRS [Member]        
Income Tax Holiday [Line Items]        
Income tax (expense) benefit   $ (600,000)   $ 200,000
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%  
TRS [Member] | Maximum [Member]        
Income Tax Holiday [Line Items]        
Income tax (expense) benefit $ 100,000   $ 100,000