Borrowings (Interest Rate Swap on Senior Secured Notes) (Details) (USD $)							3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended
	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2013 Derivative asset [Member] Interest rate agreements [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2012 Derivative asset [Member] Interest rate agreements [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2013 Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2013 Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2013 Other Income (Expense) [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Other Income (Expense) [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2013 Other Income (Expense) [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Other Income (Expense) [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2013 Loss on Redemption of Debt [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Loss on Redemption of Debt [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2013 Loss on Redemption of Debt [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Loss on Redemption of Debt [Member] Fair Value Hedging [Member] Designated as Hedging Instrument [Member]	Jun. 30, 2012 Old Rate Agreement [Member] Interest Expense [Member] Fair Value Hedging [Member] Interest rate agreements [Member]	Jun. 30, 2012 Old Rate Agreement [Member] Loss on Redemption of Debt [Member] Fair Value Hedging [Member] Interest rate agreements [Member] Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Fair market value of Rate Agreements - asset (liability)	$ (1,435,000)		$ (81,000)		$ (1,781,000)	$ 298,000
Adjustment to (decrease) increase the carrying value of the related long-term debt	(1,102,000)	[1]	408,000	[1]
Net impact on Condensed Consolidated Statements of Operations							(347,000)	3,329,000	(569,000)	3,748,000	(347,000)	(173,000)	(569,000)	246,000	0	3,502,000	0	3,502,000
Gain (loss) on carrying value adjustment on debt related to interest rate swap																			$ 100,000	$ 3,500,000

[1] See Interest Rate Agreement under “Senior Secured Notes” below and in note 9.