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Share-based Compensation (Details Textual)
6 Months Ended
Sep. 30, 2018
USD ($)
shares
Stock Based Compensation (Textual) [Abstract]  
Maximum number of shares subject to stock options and restricted shares 1,300,000
Restricted Stock [Member]  
Stock Based Compensation (Textual) [Abstract]  
Unrecognized stock based compensation expense related to non-vested restricted stock | $ $ 3,400,000
Weighted-average vesting period 2 years 1 month 7 days
Stock Settled Stock Appreciation Rights (SSARS) [Member]  
Stock Based Compensation (Textual) [Abstract]  
Unrecognized stock based compensation expense related to non-vested SSARs | $ $ 900,000
Weighted-average vesting period 3 years
Performance Shares [Member]  
Stock Based Compensation (Textual) [Abstract]  
Deferred compensation liability | $ $ 450,000
Unrecognized stock based compensation expense related to non-vested restricted stock | $ $ 270,000
Weighted-average vesting period 6 months
Two Thousand and Sixteen Stock Incentive Plan [Member]  
Stock Based Compensation (Textual) [Abstract]  
Shares authorized under 2016 Stock incentive plan 2,000,000
Two Thousand and Sixteen Stock Incentive Plan [Member] | Stock Options [Member]  
Stock Based Compensation (Textual) [Abstract]  
Maximum number of shares subject to stock options and restricted shares 800,000
Two Thousand and Sixteen Stock Incentive Plan [Member] | Restricted Shares and Restricted Share Units [Member]  
Stock Based Compensation (Textual) [Abstract]  
Maximum number of shares subject to stock options and restricted shares 400,000
2011 Stock Incentive Plan [Member]  
Stock Based Compensation (Textual) [Abstract]  
Shares available for grant 957,575