Credit Agreements (Details)	9 Months Ended				9 Months Ended		9 Months Ended			1 Months Ended	9 Months Ended		9 Months Ended					9 Months Ended
	Mar. 31, 2015 USD ($)	Oct. 15, 2014 USD ($)	Jun. 30, 2014 USD ($)	May 31, 2013	Mar. 31, 2015 JP Morgan [Member] USD ($)	Jun. 30, 2014 JP Morgan [Member] USD ($)	Mar. 31, 2015 JP Morgan UK [Member] USD ($)	Mar. 31, 2015 RBSNederlandNV [Member] EUR (€)	Mar. 31, 2015 Interest Rate Cap [Member] USD ($)	May 31, 2013 Interest Rate Swap [Member] USD ($)	Mar. 31, 2015 Interest Rate Swap [Member] USD ($)	Mar. 31, 2015 Senior Notes due in 2020 [Member] USD ($)	Mar. 31, 2015 2013 Credit Agreement LIBOR [Member]	Mar. 31, 2015 2013 Credit Agreement [Member] USD ($)	Mar. 22, 2013 Swingline Loan [Member] USD ($)	Mar. 31, 2015 Revolving Credit Facility [Member] USD ($)	Mar. 22, 2013 Revolving Credit Facility [Member] USD ($)	Mar. 31, 2015 2013 Credit Agreement One Month LIBOR Margin [Member]	Mar. 31, 2015 2013 Credit Agreement Swingline [Member]	Mar. 22, 2013 Term Loan [Member] USD ($)	Mar. 31, 2015 Senior Notes due in 2020 [Member] Senior Notes [Member] USD ($)	Jul. 25, 2013 Senior Notes due in 2020 [Member] Senior Notes [Member]	Mar. 31, 2015 Designated as Hedging Instrument [Member] USD ($)	Jun. 30, 2014 Designated as Hedging Instrument [Member] USD ($)	Mar. 31, 2015 Designated as Hedging Instrument [Member] Interest Rate Contract [Member] USD ($)
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage																						3.11%
Derivative, Notional Amount	$ 558,201,000		$ 568,853,000																				$ 369,777,000	$ 418,141,000	$ 150,000,000
Deferred Finance Costs, Noncurrent, Net												300,000		2,600,000
Long-term Debt																				200,000,000
Debt Instrument, Face Amount																	200,000,000
Line of Credit Facility, Current Borrowing Capacity															75,000,000		300,000,000
Letters of Credit Outstanding, Amount	9,600,000																10,000,000
Debt Instrument, Basis Spread on Variable Rate													1.75%					0.75%	0.75%
Credit agreement maximum borrowing capacity							4,500,000	4,000,000
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum							2.00%	2.00%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum							4.00%	4.00%
Long-term Debt, Gross		385,000,000																			100,000,000
Max commitment fee on revolving loan unused amount, percentage	0.30%
Remaining borrowing available under revolving credit facility							4,500,000	4,000,000								215,000,000
Interest rate swap, fixed interest rate	1.30%			0.73%
Derivative interest rate cap arrangement	2.00%
Principal amount of debt hedged with an interest rate swap agreement									25,000,000	100,000,000	75,000,000
Debt, Weighted Average Interest Rate														0.00%
Transfers of Financial Assets Including Debt Activity					90,400,000
Other Short-term Borrowings					$ 0	$ 0