Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Textual (Details) - Jun. 30, 2015 - USD ($)	Total
Derivative [Line Items]
Inception date	Dec. 19, 2011
Effective date	Jun. 07, 2013
Amount of cash flow hedge	$ 150,000,000
Term Loan, Amount Outstanding	$ 150,000,000
Credit spread	1.40%
All-in rate	2.66%
Lower range of basis spread	0.90%
Higher range of basis spread	1.90%
Fair value of the derivative in a net liability position	$ 1,700,000
Fair value of assets needed for immediate settlement	1,700,000
Derivative interest payable	86,000
Amount of other comprehensive income to be reclassified to earnings over the next twelve months	$ 1,200,000
2015 Derivative [Member]
Derivative [Line Items]
Fixed derivative rate	1.42%
All-in rate	2.82%
2018 derivative [Member]
Derivative [Line Items]
Fixed derivative rate	1.75%
All-in rate	3.15%
Fixed Rate Debt Hedged [Member]
Derivative [Line Items]
Fixed derivative 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
Fixed derivative rate	1.55%
All-in rate	2.95%