Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Trade Receivables, Net Of Provisions (Change In Allowance For Doubtful Trade Receivable) (Details)

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Trade Receivables, Net Of Provisions (Change In Allowance For Doubtful Trade Receivable) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Trade Receivables, Net Of Provisions [Abstract]      
Provision at beginning of period $ 2,606 $ 3,392 $ 11,983
Expense for doubtful accounts receivable 3,335 39 (29)
Discontinued operations (2,567) 1,128 992
Other 156 [1] (1,953) [1] (9,554) [1]
Provision at the end of period $ 3,530 $ 2,606 $ 3,392
[1] Other includes direct write offs and cash accounting for certain trade receivables.