Derivative Financial Instruments - Schedule of Notional Amounts of Outstanding Derivative Positions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Derivative [Line Items]
Deferred gains on derivatives designated as cash flow hedges	$ 26,561	$ 0	$ 21,175	$ 0
Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Deferred gains on derivatives designated as cash flow hedges	$ 26,561		$ 21,175

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration