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CONSOLIDATED STATEMENT OF CASH FLOWS INFORMATION (Schedule of Cash Flow Supplemental Disclosures) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
CONSOLIDATED STATEMENTS OF CASH FLOWS INFORMATION [Abstract]    
Cash paid during the period for interest $ 4,264 $ 4,895
Income tax payments 5,150 5,092
Income tax refunds 1,626 1,226
Capital lease additions 1,587 1,080
Capitalized interest $ 158 $ 141