Derivatives (Gain Loss on Interest Rate Swaps Included in Earnings) (Details) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		0 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Jul. 02, 2013 Interest rate agreements [Member]	Sep. 30, 2014 Interest rate agreements [Member]	Sep. 30, 2013 Interest rate agreements [Member]	Sep. 30, 2014 Interest rate agreements [Member]	Sep. 30, 2013 Interest rate agreements [Member]	Sep. 30, 2014 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Sep. 30, 2013 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Sep. 30, 2014 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Sep. 30, 2013 Interest rate agreements [Member] Loss on Redemption of Debt [Member]	Sep. 30, 2014 Interest rate agreements [Member] Other Income (Expense) [Member]	Sep. 30, 2013 Interest rate agreements [Member] Other Income (Expense) [Member]	Sep. 30, 2014 Interest rate agreements [Member] Other Income (Expense) [Member]	Sep. 30, 2013 Interest rate agreements [Member] Other Income (Expense) [Member]	Sep. 30, 2014 Senior Notes [Member]	Sep. 30, 2013 Senior Notes [Member]	Sep. 30, 2014 Senior Notes [Member]	Sep. 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]	Sep. 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	0	(163,000)	(449,000)	(163,000)		0	(163,000)	140,000	(163,000)									0	0	(589,000)	0
Gain (loss) from designated portion of Interest Rate Agreement	0	85,000	(238,000)	(484,000)		0	330,000	497,000	(1,749,000)									0	(245,000)	(735,000)	1,265,000
Gain (loss) on the hedged long-term debt netted with the offsetting gain (loss) on the related designated and de-designated interest rate swap						$ 0	$ (78,000)	$ (687,000)	$ (647,000)	$ 0	$ 0	$ (757,000)	$ 0	$ 0	$ (78,000)	$ 70,000	$ (647,000)								$ (800,000)