Fair Value Of Financial Instruments, Derivative And Marketable Securities (Narrative) (Details)	3 Months Ended	12 Months Ended					12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 USD ($) contract	Dec. 31, 2013 JPY (¥)	Dec. 31, 2012 JPY (¥) contract	Dec. 31, 2013 Other Comprehensive Income (Loss) [Member] USD ($)	Dec. 31, 2012 Other Comprehensive Income (Loss) [Member] USD ($)	Aug. 31, 2013 Foreign Exchange Contract 1 [Member] USD ($)	Aug. 31, 2013 Foreign Exchange Contract 1 [Member] MXN	Nov. 30, 2013 Foreign Exchange Contract 2 [Member] USD ($)	Nov. 30, 2013 Foreign Exchange Contract 2 [Member] MXN
Derivative Instruments, Gain (Loss) [Line Items]
Maximum potential future exposure on derivatives				$ 4,500,000
Unrealized loss related to derivative instruments included in accumulated other comprehensive loss							4,300,000	7,400,000
Number of forward purchase contracts				2	2
Number of foreign currency derivatives held				3	3
Notional amount of forward purchase contracts					3,300,000,000				1,200,000		600,000
Exchange rate					102.53	86.74				13.6103		13.3003
Projected Peso exposure represented by Mexican Peso foreign exchange contracts (in hundredths)				60.00%	60.00%
Number of forward sales contracts				0	0	0
Long-term debt, fair value				196,600,000
Notes receivable, carrying amount				33,700,000
Marketable securities, gain	447,000
Gain on sale of investments		580,000	(747,000)
Marketable securities held				$ 0