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CONSOLIDATED STATEMENT OF CASH FLOWS INFORMATION (Schedule of Cash Flow Supplemental Disclosures) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
CONSOLIDATED STATEMENTS OF CASH FLOWS INFORMATION [Abstract]      
Cash paid for interest $ 5,721 $ 6,784 $ 7,691
Income tax payments 7,221 6,898 11,445
Income tax refunds 1,697 1,613 2,627
Capital lease additions 1,722 1,081 4,086
Capitalized interest $ 212 $ 210 $ 382