Derivative Financial Instruments (Details) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Jul. 31, 2013
Debt Instrument [Line Items]
Gain upon settlement of cash flow hedges, (less than $0.1 million)	$ 100,000	$ 100,000
2013 Interest Rate Swap [Member]
Debt Instrument [Line Items]
Notional Amount				$ 175,000,000
Annualized borrowing rate	2.23%
Fixed interest rate				0.87%
2013 Credit Facility [Member]
Debt Instrument [Line Items]
Amount of hedged item				$ 175,000,000
Term loan	$ 279,800,000		$ 319,400,000	$ 350,000,000
Designated as Hedging Instrument [Member] | Level 2 [Member]
Debt Instrument [Line Items]
Derivative assets	$ 674,000		$ 26,000