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Shareholders' Equity and Regulatory Capital - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 0 Months Ended
Mar. 31, 2014
Jan. 08, 2013
Equity [Abstract]    
Common stock, reserved 1,045,000  
Shares available to be issued 670,000  
Aggregate capital, amount   $ 80,000