Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Textual (Details) (USD $)	6 Months Ended
	Jun. 30, 2014
Derivative [Line Items]
Inception date	Dec. 19, 2011
Effective date	Jun. 07, 2013
Amount of cash flow hedge	$ 125,000,000
Term Loan, Amount Outstanding	150,000,000
Credit spread	1.70%
All-in rate	2.96%
Lower range of basis spread	1.25%
Higher range of basis spread	2.20%
Fair value of the derivative in a net liability position	2,100,000
Fair value of assets needed for immediate settlement	2,100,000
Derivative interest payable	84,000
Amount of other comprehensive income to be reclassified to earnings over the next twelve months	1,400,000
Fixed Rate Debt Hedged [Member]
Derivative [Line Items]
Base rate	1.26%
2013 derivative [Domain]
Derivative [Line Items]
Inception date	Apr. 02, 2013
Effective date	Jun. 02, 2016
Amount of cash flow hedge	$ 125,000,000
Base rate	1.55%
All-in rate	3.25%