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Income Taxes (Detail Textuals) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Income Tax Disclosure [Abstract]        
Income tax expense $ 96 $ 220 $ 669 $ 720
Decrease in effective tax rate 14.20% 39.00% 25.10% 38.40%