Income Taxes - Unrecognized Tax Benefit (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Expected future taxable income to fully realize the deferred tax assets		$ 62,000
Change in net deferred tax assets attributable to other comprehensive income		300
Domestic taxable income	$ 2,889	50,947	$ 125,289	$ 144,706
Unremitted earnings of non-US subsidiaries		454,000
Non-US Subsidiary Cash and Cash Equivalents		$ 233,000
Percentage of pre-tax earnings from a country which does not impose a corporate income tax		23.00%
Minimum percentage used to measure tax benefit of uncertain tax position		50.00%
Reconciliation of the beginning and ending amounts of total unrecognized tax benefits
Balance at the beginning of the period		$ 4,667	0
Gross increase related to current year tax positions		2,332	1,293
Gross increase related to prior year tax positions		2,059	3,374
Settlements		(363)
Balance at the end of the period	$ 0	8,695	4,667
Unrecognized tax benefits that would impact effective tax rate		3,996
Accrued interest on income tax contingencies		$ 1,842	$ 1,246