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Share Based Compensation (Additional Information) (Detail) - USD ($)
$ in Thousands
3 Months Ended 4 Months Ended 12 Months Ended
Mar. 31, 2015
May. 06, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Exercise period     5 years 5 months 1 day 5 years 29 days 5 years 4 months 2 days
Options exercised intrinsic value     $ 458    
Stock Options Granted, Net of Forfeitures     21,245    
Stock Options and Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Recognized Compensation expense     $ 1,900 $ 1,700 $ 1,500
Unrecognized Compensation expense     200 200 200
Stock Options Vested, Fair Value     200 200 200
Stock Option          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized Compensation expense     $ 200    
Expected cost recognition weighted average period     1 year 9 months 18 days    
Options exercised intrinsic value     $ 500 $ 100 $ 100
Stock Options Granted 21,245   0    
Vesting period 3 years        
Restricted Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Unrecognized Compensation expense     $ 3,900    
Expected cost recognition weighted average period     3 years 2 months 12 days    
Stock Options Granted 79,860   0    
Vesting period 5 years        
2015 Omnibus Incentive Plan | Common Stock          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Common stock, shares authorizes   1,500,000      
Term of share based compensation plan   10 years      
Exercise period   10 years      
Minimum grant price percentage   100.00%      
2015 Omnibus Incentive Plan | Common Stock | Stock Option          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Stock Options Granted     0