Goodwill and Other Intangible Assets (Change in Balance) (Details) $ in Thousands	6 Months Ended
	Sep. 30, 2015 USD ($)
Changes in goodwill
Goodwill, net, balance at the beginning of the period	$ 127,934
Goodwill, net, balance at the end of the period	127,934
Other intangible assets, net:
Other intangible assets, net, balance at beginning of the period	87,743
Purchase of intangible assets	3,800
Amortization expense	(4,358)
Changes in foreign currency exchange rates	783
Other intangible assets, net, balance at end of the period	$ 87,968