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Investment Securities Text Figures (Details)
 3 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Schedule of Investments [Line Items]    
Number of agencies with unrealized loss more than 12 months 8  
Available-for-sale $ 86,972,000 $ 101,185,000
Percentage Available-for-sale Securities 84.00%  
Held-to-maturity $ 16,596,000 11,922,000
Held-to-maturity Securities, Amortized Cost [1] $ 16,596,000 $ 11,922,000
Percentage Held-to-maturity Securities 16.00%  
Trading Securities $ 0  
Number of securities with unrealized loss 31 23
US Government Agency Securities    
Schedule of Investments [Line Items]    
Percentage Available-for-Sale, Continuos Unrealized Loss Position 70.60%  
Available-for-sale $ 50,708,000 $ 57,850,000
Mortgage-backed securities    
Schedule of Investments [Line Items]    
Percentage Available-for-Sale, Continuos Unrealized Loss Position 29.40%  
Number of MBS with unrealized loss more than 12 months 10  
Available-for-sale $ 25,607,000 27,019,000
Held-to-maturity Securities, Amortized Cost [1] $ 15,596,000 $ 11,922,000
[1] * The carrying amount and amortized cost are the same for all held-to-maturity securities, as no OTTI has been recorded.