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Preferred Stock Received in Troubled Asset Relief Program ("TARP") Capital Purchase Program ("CPP") (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Jun. 30, 2015
Sep. 30, 2014
Nov. 13, 2012
Dec. 23, 2008
Class of Stock [Line Items]        
Preferred stock, proceeds from Capital Purchase Program (CPP)       $ 16,640
Preferred stock shares issued 0 0    
Preferred stock per share liquidation value (in dollars per share) $ 1,000 $ 1,000    
Warrants to purchase shares of common stock       370,899
Warrant, exercise price per share (in dollars per share)       $ 6.73
Series A Preferred Stock        
Class of Stock [Line Items]        
Preferred stock shares issued     16,641 16,641
Preferred stock per share liquidation value (in dollars per share)       $ 1,000
Shares repurchased and retired (in shares) 4,576      
Shares repurchased and retired, amount $ 4,320      
Shares repurchased and retired, discount from par value $ 255      
Series A Preferred Stock | Minimum        
Class of Stock [Line Items]        
Preferred stock dividend rate       5.00%