Schedule II - Valuation and Qualifying Accounts (Details) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period		$ 57,980	$ 69,939	$ 64,356
Additions: Charges to expense	[1]	4,312	8,453	2,616
Deductions	[2]	(11,737)	(13,185)	0
Other changes	[3]	(5,039)	(7,227)	2,967
Balance at end of period		$ 45,516	$ 57,980	$ 69,939

[1] Additions to the deferred tax asset valuation allowance relate to movements on certain French, Irish and U.S. deferred tax assets where we continue to maintain a valuation allowance until sufficient positive evidence exists to support reversal.

[2] Deductions to the deferred tax asset valuation allowance include movements relating to utilization of NOLs and tax credit carryforwards, release in valuation allowance and other movements including adjustments following finalization of tax returns.

[3] Other changes to the deferred tax asset valuation allowance relate primarily to currency translation adjustments recorded directly in equity.