Supplemental Cash Flow And Non-Cash Information (Schedule Of Supplemental Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow And Non-Cash Information [Abstract]
Income taxes paid, net	$ 62	$ 11,975	$ 7,759
Interest paid	1,757	1,353	1,290
Non-cash investing activity:
Additions to property, plant and equipment in accounts payable	$ 3,170	$ 2,020