Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified				3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014 Tax Increment Financing Bond [Member]	Mar. 31, 2013 Tax Increment Financing Bond [Member]	Mar. 31, 2014 Cash Flow Hedges [Member]		Mar. 31, 2013 Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) Calculation [Roll Forward]
Beginning balance	$ (2,922)	$ (2,611)	$ (11,170)	$ (1,029)	$ (1,898)	$ (1,582)		$ (10,730)
Unrealized gains/(losses)				165	390	(1,404)		280
Amortization reclassified out of AOCL						928	[1]	788	[1]
Ending balance	(2,922)	(2,611)	(11,170)	(864)	(1,508)	(2,058)		(9,662)
Total accumulated other comprehensive loss	$ (2,922)	$ (2,611)	$ (11,170)	$ (864)	$ (1,508)	$ (2,058)		$ (9,662)

[1] Amounts reclassified out of AOCL into contractual interest expense.