Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified				3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Jun. 30, 2014 Tax Increment Financing Bond [Member]	Jun. 30, 2013 Tax Increment Financing Bond [Member]	Jun. 30, 2014 Tax Increment Financing Bond [Member]	Jun. 30, 2013 Tax Increment Financing Bond [Member]	Jun. 30, 2014 Cash Flow Hedges [Member]	Jun. 30, 2013 Cash Flow Hedges [Member]	Jun. 30, 2014 Cash Flow Hedges [Member]	Jun. 30, 2013 Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) Calculation [Roll Forward]
Beginning balance	$ (4,719)	$ (2,611)	$ (4,142)	$ (864)	$ (1,508)	$ (1,029)	$ (1,898)	$ (2,058)	$ (9,662)	$ (1,582)	$ (10,730)
Unrealized gains/(losses)				105	(91)	270	299	(2,846)	6,319	(4,250)	6,599
Amortization reclassified out of AOCL								944	800	1,872	1,588
Ending balance	(4,719)	(2,611)	(4,142)	(759)	(1,599)	(759)	(1,599)	(3,960)	(2,543)	(3,960)	(2,543)
Total accumulated other comprehensive loss	$ (4,719)	$ (2,611)	$ (4,142)	$ (759)	$ (1,599)	$ (759)	$ (1,599)	$ (3,960)	$ (2,543)	$ (3,960)	$ (2,543)