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Debt - Convertible Debt (Details)
6 Months Ended
Sep. 30, 2023
USD ($)
$ / shares
Debt Instrument [Line Items]  
Value if converted above par | $ $ 1,000
2015 Senior Convertible Debt  
Debt Instrument [Line Items]  
Threshold percentage of stock price trigger 130.00%
2017 Senior Convertible Debt  
Debt Instrument [Line Items]  
Threshold percentage of stock price trigger 130.00%
Senior Convertible Debt | 2015 Senior Convertible Debt  
Debt Instrument [Line Items]  
Conversion Rate 34.3667
Approximate Conversion Price (in dollars per share) $ 29.10
Incremental Share Factor 17.1851
Maximum Conversion Rate 48.1125
Conversion rate, adjusted based on closing stock price 45.1450
Value if converted above par | $ $ 17,000,000
Senior Convertible Debt | 2017 Senior Convertible Debt  
Debt Instrument [Line Items]  
Conversion Rate 22.0373
Approximate Conversion Price (in dollars per share) $ 45.38
Incremental Share Factor 11.0194
Maximum Conversion Rate 31.4033
Conversion rate, adjusted based on closing stock price 26.6501
Value if converted above par | $ $ 41,100,000
Senior Convertible Debt | 2020 Senior Convertible Debt  
Debt Instrument [Line Items]  
Conversion Rate 10.8633
Approximate Conversion Price (in dollars per share) $ 92.05
Incremental Share Factor 0
Maximum Conversion Rate 15.2086
Common Stock  
Debt Instrument [Line Items]  
Share price (in dollars per share) $ 78.05