CONSOLIDATED STATEMENT OF CASH FLOWS INFORMATION (Schedule of Cash Flow Supplemental Disclosures) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 4,468	$ 3,545
Income tax payments	2,811	3,794
Income tax refunds	1,791	492
Capital lease additions	906	884
Capitalized interest	$ 136	$ 143