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Commitments and Contingencies Commitments and Contingencies (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Mar. 31, 2016
Other Commitments [Line Items]    
Lines of credit $ 8,527 $ 6,144
Letters of credit 69 234
Commitment to fund private equity investment 640 852
Commitments and Contingencies 13,666 25,798
Commercial real estate    
Other Commitments [Line Items]    
Unused Commitments to Extend Credit 900 15,568
Business    
Other Commitments [Line Items]    
Unused Commitments to Extend Credit $ 3,530 $ 3,000