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Reserve for Severance Activity in reserve (Details) (Employee Severance [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Employee Severance [Member]
Reserve for severance and related payments
Balance at beginning of period	$ 1,769	$ 4,417	$ 1,282
Charged to earnings current year	631	837	8,021
Cash paid and exchange rate variance	(2,089)	(3,485)	(4,886)
Balance at end of the period	$ 311	$ 1,769	$ 4,417

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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