Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

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Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]        
Amortization $ 582 $ 1,882 $ 1,172 $ 3,762