Stockholders' Equity and Noncontrolling Interests - Components of Accumulated Other Comprehensive Income (Details) $ in Thousands	9 Months Ended
	Dec. 31, 2017 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	$ 1,108,369
Ending balance	1,125,974
Pension funded status adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	25,555
Before Reclassifications	0
Amounts Reclassified from AOCI	(996)
Ending balance	24,559
Net unrealized gain (loss) on derivative instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	1,975
Before Reclassifications	309
Amounts Reclassified from AOCI	338
Ending balance	2,004
Foreign currency translation adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	(129,244)
Before Reclassifications	(86,782)
Amounts Reclassified from AOCI	0
Ending balance	(42,462)
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Beginning balance	(152,824)
Before Reclassifications	86,473
Amounts Reclassified from AOCI	1,334
Ending balance	$ (65,017)