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Earnings Per Share (Narratives) (Details) - USD ($)		3 Months Ended		6 Months Ended
Earnings Per Share (Narratives) (Details) - USD ($)	Oct. 22, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Number Diluted Shares Outstanding Adjustment		295,000	449,000	300,000	427,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Other Increases (Decreases) in Period				203,000
Common Stock, Dividends, Per Share, Declared		$ 0.06	$ 0.05	$ 0.06	$ 0.05
2016 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total number of shares of common stock available for grant		2,500,000		2,500,000
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount				288,000
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount				134,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount					70,000
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends	$ 1,425,000