Derivative Financial Instruments Effectiveness Testing (Details) (Interest rate swap [Member], USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Gain/(loss) reclassified from accumulated other comprehensive income/(loss) into earnings due to ineffectiveness	$ 0		$ 0
Existing net losses realized and recorded as interest expense	600,000	1,200,000	1,000,000	1,900,000
Scenario, Forecast [Member]
Existing net losses expected to be realized within the next 12 months			$ 2,800,000