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Stock Compensation Plans - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2015
Jun. 30, 2015
May. 13, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation   $ 52  
2014 Stock Incentive Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for grant     240,000
Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock units, granted 12,546 12,546  
Restricted stock units, vested 4,182 4,182  
Restricted stock units, nonvested outstanding 8,364 8,364  
Total unrecognized pre-tax compensation expense related to unvested restricted stock unit awards   $ 61