Derivatives (Gain Loss on Interest Rate Swaps Included in Earnings) (Details) (USD $)	3 Months Ended		6 Months Ended		0 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		0 Months Ended			3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jul. 02, 2013 Interest rate agreements [Member]	Jun. 30, 2014 Interest rate agreements [Member]	Jun. 30, 2013 Interest rate agreements [Member]	Jun. 30, 2014 Interest rate agreements [Member]	Jun. 30, 2013 Interest rate agreements [Member]	Jun. 30, 2014 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Jun. 30, 2013 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Jun. 30, 2014 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Jun. 30, 2013 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Jun. 30, 2014 Interest rate agreements [Member] Other Income (Expense) [Member]	Jun. 30, 2013 Interest rate agreements [Member] Other Income (Expense) [Member]	Jun. 30, 2014 Interest rate agreements [Member] Other Income (Expense) [Member]	Jun. 30, 2013 Interest rate agreements [Member] Other Income (Expense) [Member]	Jun. 30, 2014 Senior Notes [Member]	Jun. 30, 2013 Senior Notes [Member]	Jun. 30, 2014 Senior Notes [Member]	Jun. 30, 2013 Senior Notes [Member]	Jul. 02, 2013 Senior Notes [Member] Interest rate agreements [Member]	May 13, 2014 Fair Value Hedging [Member] Senior Notes [Member] Interest rate agreements [Member]	May 09, 2014 Fair Value Hedging [Member] Senior Notes [Member] Interest rate agreements [Member]	Jun. 30, 2014 Fair Value Hedging [Member] Senior Notes [Member] Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Apr. 09, 2014 Fair Value Hedging [Member] Designated as Hedging Instrument [Member] Senior Notes [Member] Interest rate agreements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, notional amount																								$ 45,000,000		$ 40,500,000
Derivative, payment on hedge																							1,100,000
Derivative, notional amount de-designated, percent of total					10.00%
Derivative, notional amount de-designated																						4,500,000
Gain (loss) from de-designated portion of Interest Rate Agreement	(549,000)	0	(449,000)	0		40,000	0	140,000	0									(589,000)	0	(589,000)	0
Gain (loss) from designated portion of Interest Rate Agreement	(208,000)	(347,000)	(238,000)	(569,000)		168,000	(1,723,000)	497,000	(2,079,000)									(376,000)	1,376,000	(735,000)	1,510,000
Gain (loss) on the hedged long-term debt netted with the offsetting gain (loss) on the related designated and de-designated interest rate swap						$ (757,000)	$ (347,000)	$ (687,000)	$ (569,000)	$ (757,000)	$ 0	$ (757,000)	$ 0	$ 0	$ (347,000)	$ 70,000	$ (569,000)								$ (800,000)