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Investment Securities (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Investment Securities (Textual)    
Pledged securities $ 2,100 $ 2,100
Amortized cost 547  
Available-for-sale Securities, Estimated fair value $ 546 $ 48
Maturity date Dec. 31, 2020  
Agency bond [Member]    
Investment Securities (Textual)    
Amortized cost $ 501  
Available-for-sale Securities, Estimated fair value $ 500