CONSOLIDATED STATEMENT OF CASH FLOWS INFORMATION (Schedule of Cash Flow Supplemental Disclosures) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 5,065	$ 5,721	$ 6,784
Income tax payments	7,376	7,221	6,898
Income tax refunds	1,060	1,697	1,613
Capital lease additions	2,708	1,722	1,081
Capitalized interest	$ 274	$ 212	$ 210