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Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Nov. 30, 2016
Dec. 31, 2014
May 31, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized stock based compensation expense $ 5,325        
2012 Equity Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Common stock shares authorized for issuance       880,000 440,000
2012 Equity Incentive Plan | Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Restricted stock shares issued 266,000 161,000      
Grant date fair value per share $ 15.82        
Stock compensation expense recognized $ 176 $ 189      
Unrecognized stock based compensation expense $ 5,325        
2012 Equity Incentive Plan | Minimum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Expiration period 5 years        
Percent of voting power 10.00%        
2012 Equity Incentive Plan | Minimum | Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Grant date fair value per share $ 1.89        
Shares vest over period 1 year        
2012 Equity Incentive Plan | Maximum          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Expiration period 10 years        
2012 Equity Incentive Plan | Maximum | Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Grant date fair value per share $ 19.00        
Shares vest over period 5 years        
2016 Omnibus Incentive Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Common stock shares authorized for issuance     3,911,000