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Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical)
6 Months Ended 9 Months Ended
Dec. 31, 2017
Mar. 31, 2019
ASU 2018-02 [Member]    
Increase (Decrease) in Stockholders' Equity [Roll Forward]    
Federal corporate tax rate 34.00% 21.00%