Derivative Instruments (Statement of Operations Disclosures) (Details) (USD $) In Thousands, unless otherwise specified		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Aug. 08, 2012	Sep. 30, 2012 Interest Rate Contract [Member] Other Comprehensive Income (Loss) Cash Flow Hedging	Sep. 30, 2011 Interest Rate Contract [Member] Other Comprehensive Income (Loss) Cash Flow Hedging	Sep. 30, 2012 Interest Rate Contract [Member] Other Comprehensive Income (Loss) Cash Flow Hedging	Sep. 30, 2011 Interest Rate Contract [Member] Other Comprehensive Income (Loss) Cash Flow Hedging	Sep. 30, 2012 Interest Rate Contract [Member] Interest expense Cash Flow Hedging	Sep. 30, 2011 Interest Rate Contract [Member] Interest expense Cash Flow Hedging	Sep. 30, 2012 Interest Rate Contract [Member] Interest expense Cash Flow Hedging	Sep. 30, 2011 Interest Rate Contract [Member] Interest expense Cash Flow Hedging
Derivative Instruments, Gain (Loss)
Derivative, Cap Interest Rate	3.00%
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net
Amount of Gain/Loss Recognized in Accumulated Other Comprehensive Income on Derivative		$ (93)	$ (113)	$ (54)	$ (440)
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net
Amount of Gain/Loss Reclassified from Accumulated Other Comprehensive Income into Income						$ 92	$ 95	$ 273	$ 219