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Post-Employment Benefit Liabilities (Details) (Employee Severance [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Employee Severance [Member]
Schedule of actual liabilities reported under non current liabilities
Beginning balance	$ 6,930	$ 7,705
Amounts accrued	251	574
Payments to employees/government managed plan	(403)	(1,477)
Foreign currency impacts	(193)	128
Ending balance	$ 6,585	$ 6,930

For a classified balance sheet, the carrying amount as of the balance sheet date of the portion of the obligations recognized for the various benefits provided to former or inactive employees, their beneficiaries, and covered dependents after employment but before retirement that is payable after one year (or beyond the operating cycle if longer).

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