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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parentheticals) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Statements of Comprehensive Income        
Tax effect of unrealized holding gain (loss) from available for sale securities $ 313 $ (105) $ 539 $ (321)