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Stock-Based Compensation Compensation Expense (Details 1)
shares in Thousands
3 Months Ended
Jun. 30, 2016
shares
Share-based Compensation Arrangement by Share-based Payment Award  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 3,289
Employee Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award  
Share-based Compensation Arrangement by Share-based Payment Award Granted Price as Percentage of Fair Market Value Minimum 100.00%
Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 8 years
Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 5 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years