Fair Value Of Financial Instruments, Derivative And Marketable Securities (Interest Rate Derivatives) (Details)					12 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2013 JPY (¥)	Dec. 31, 2012 USD ($)	Dec. 31, 2012 JPY (¥)	Dec. 31, 2013 Swap 3 [Member] USD ($)		Dec. 31, 2013 Swap 3 [Member] JPY (¥)
Derivative [Line Items]
Effective Date					Mar. 15, 2009		Mar. 15, 2009
Termination Date					Sep. 15, 2020		Sep. 15, 2020
Current Notional Amount	$ 46,700,000		$ 61,500,000		$ 46,712,880
Swap Rate (in thousandths)					2.065%	[1]	2.065%	[1]
Type					Variable-to-Fixed		Variable-to-Fixed
Exchange rate		102.53		86.74			105.31

[1] Notional Amount converted from Yen at December 31, 2013 at a Yen to USD exchange rate of 105.31.