Derivative Financial Instruments - Narrative (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013	Dec. 01, 2012
Derivative [Line Items]
Derivative Instruments, Percentage Designated As Cash Flow Hedges					86.00%
Derivative, Nonmonetary Notional Amount		$ 0		$ 0
Net gains (losses) on ineffectiveness	200,000		(400,000)
Net gains recognized in other comprehensive income (loss) (effective portion)	26,561,000	0	21,175,000	0
Restricted cash	0		0		8,084,000
Notional amount on interest rate swap transaction	10,000,000		10,000,000			10,000,000
Net losses to be reclassified into earnings within the next twelve months			18,800,000
Derivative Instruments, Percentage Excluded from Effectiveness Testing			14.00%
Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Net gains recognized in other comprehensive income (loss) (effective portion)	$ 26,561,000		$ 21,175,000
Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	32,800,000		32,800,000