Derivative Financial Instruments (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Expected increase to interest expense	$ 3,200,000		$ 3,200,000
Derivatives designated as cash flow hedges in prepaid expenses and other assets l [Abstract]
Interest rate swaps	0		0		301,000
Derivatives designated as cash flow hedges in accounts payable, accrued expenses and other liabilities [Abstract]
Interest rate swaps	959,000		959,000		510,000
Amount of unrealized gains/(losses) recognized in AOCL on derivatives (effective portion) [Abstract]
Interest rate swaps	913,000	(1,798,000)	(3,337,000)	4,801,000
Amount of losses reclassified out of AOCL into contractual interest expense (effective portion) [Abstract]
Interest rate swaps	$ 952,000	$ 840,000	$ 2,824,000	$ 2,428,000