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Borrowings Borrowings (Contractual Maturities) (Details) - San Francisco [Member] - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]      
Within one year $ 25,011 $ 0  
Over one to two years 10,000 10,036  
Over two to three years 0 10,000  
Over three to four years 20,000 0  
Over four to five years 21,215 20,000  
Over five years 50,000 51,263  
Total borrowings $ 126,226 $ 91,299 $ 91,367
Weighted average interest rate 2.39% 2.78% 2.78%