Aggregate dividends declared during the period for each share of common stock outstanding.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

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- Definition

Equity impact of common stock cash dividends declared by an entity during the period. This element includes paid and unpaid dividends declared during the period.

+ References

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Period Type:	duration

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 32

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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Cash Dividends Declared (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Dividends Payable [Line Items]
Dividend Per Share	$ 0.30	$ 0.24	$ 0.20
Total Dividend Amount	$ 19,878	$ 16,701	$ 14,250
November 11, 2010
Dividends Payable [Line Items]
Declaration Date		Nov. 11, 2010
Record Date		Dec. 10, 2010
Payment Date		Jan. 07, 2011
Dividend Per Share		$ 0.12
Total Dividend Amount		8,412
May 20, 2011
Dividends Payable [Line Items]
Declaration Date		May 20, 2011
Record Date		Jun. 20, 2011
Payment Date		Jul. 12, 2011
Dividend Per Share		$ 0.12
Total Dividend Amount		8,284
November 2, 2011
Dividends Payable [Line Items]
Declaration Date	Nov. 02, 2011
Record Date	Dec. 08, 2011
Payment Date	Jan. 10, 2012
Dividend Per Share	$ 0.15
Total Dividend Amount	10,085
May 14, 2012
Dividends Payable [Line Items]
Declaration Date	May 14, 2012
Record Date	Jun. 21, 2012
Payment Date	Jul. 12, 2012
Dividend Per Share	$ 0.15
Total Dividend Amount	$ 9,794