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Goodwill and Other Intangible Assets Schedule of Changes in Intangible Assets (Details) - USD ($)
$ in Thousands
6 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Finite-lived Intangible Assets [Roll Forward]    
Intangible assets, net, beginning balance $ 57,850  
Amortization expense (3,400) $ (3,866)
Changes in foreign currency exchange rates (94)  
Intangible assets, net, ending balance $ 54,356