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Income Taxes (Changes in Gross Amounts of Unrecognized Tax Benefits) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Beginning balance at December 31 $ 6,935 $ 8,673
Additions based on tax positions related to the current year 819 757
Additions for tax positions of prior years 3,608 31
Settlements with taxing authorities 0 (2,257)
Reductions due to lapse of statute of limitations (691) (207)
Decrease from currency translation 104 (62)
Ending balance at December 31 $ 10,775 $ 6,935