Income Taxes Reconciliation of Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	2.30%	43.20%	4.00%
Effective Income Tax Rate Reconciliation, Uncertain Tax Benefits	1.30%	41.80%	1.80%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(3.90%)	(172.50%)	(4.80%)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	(1.10%)	33.20%	0.00%
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent	(5.40%)	(15.60%)	(0.50%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	1.60%	(33.90%)	(2.70%)
Effective Income Tax Rate Reconciliation,Other Reconciling Items, Percent	(0.50%)	39.10%	1.70%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Percent	(5.00%)	(0.00%)	(0.00%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	(1.60%)	(0.80%)	(0.50%)
Effective Income Tax Rate Reconciliation, Percent	22.70%	(30.50%)	34.00%
Tax Benefit, Impairment of Intangible Assets, Indefinite Lived (Excluding Goodwill)	$ 2,890	$ 66,780