Noncontrolling Interests Income Attributable to NCI Reconciliation Schedule (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	$ 11,063	$ 16	$ 39,335	$ (993)
Net Income (Loss) Attributable to Noncontrolling Interest	13,088	16	45,067	(993)
Royce [Member]
Noncontrolling Interest [Line Items]
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	$ 2,025	$ 0	$ 5,732	$ 0