Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Fair Value Measurements - Cross Currency Swaps (Details)

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Fair Value Measurements Fair Value Measurements - Cross Currency Swaps (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2019
Dec. 31, 2019
Mar. 31, 2019
Fair Value Disclosures [Abstract]      
Intercompany receivable $ 66,248 $ 66,248  
Derivative [Line Items]      
Unrealized gain (loss) on intercompany note 1,974    
Cross Currency Swap      
Derivative [Line Items]      
Gain (loss) on long-term derivative contract   (1,895)  
Net gain (loss)   78  
Designated as Hedging Instrument | Cross Currency Swap      
Derivative [Line Items]      
Hedge assets $ 116 $ 116 $ 1,768