Income Taxes Narrative 2 (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Contingency [Line Items]
Increase (decrease) in deferred taxes assets for certain adjustments	$ (454)
Change in valuation allowance	(13,256)
Deferred tax assets, operating loss carryforwards, domestic	324,608
Deferred tax assets, operating loss carryforwards, foreign	75,873
Deferred tax assets, operating loss carryforwards, state and local	575,419
Deferred tax assets, tax credit carryforwards, foreign	4,348
Effective income tax rate reconciliation, repatriation of foreign earnings, amount	30,581
Foreign earnings repatriated	95,662
Undistributed earnings of foreign subsidiaries	353,032	$ 334,445
Foreign Tax Authority
Income Tax Contingency [Line Items]
Deferred tax assets, operating loss carryforwards, subject to expiration within five years	$ 29,129
Loss carryovers expiration period, in years	5 years
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 31,586
Deferred tax assets, operating loss carryforwards, not subject to expiration	15,158
Deferred tax assets, tax credit carryforwards, foreign subject to expire in the next five years	2,195
Domestic Tax Authority
Income Tax Contingency [Line Items]
Deferred tax assets, operating loss carryforwards, subject to expiration within five years	$ 1,854
Loss carryovers expiration period, in years	5 years
Deferred tax assets, operating loss carryforwards, subject to expiration	$ 573,565
Adjustments in Other Comprehensive Income
Income Tax Contingency [Line Items]
Change in valuation allowance	(595)
Currency Translation Adjustments
Income Tax Contingency [Line Items]
Change in valuation allowance	$ 100