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

Reference 1: 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=27012166&loc=d3e187085-122770

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- Definition

Date the declared dividend will be paid, 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

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

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent Events - Additional Information (Detail) - $ / shares	1 Months Ended		12 Months Ended
	Aug. 31, 2016	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Subsequent Event [Line Items]
Semi-annual cash dividend				$ 0.00	$ 0.00
Dividend payable date		Oct. 19, 2016
Dividend record date		Sep. 14, 2016
Class A Common Stock [Member]
Subsequent Event [Line Items]
Semi-annual cash dividend			$ 0.20
Class B Common Stock [Member]
Subsequent Event [Line Items]
Semi-annual cash dividend			$ 0.20
Subsequent Event [Member] \| Class A Common Stock [Member]
Subsequent Event [Line Items]
Semi-annual cash dividend	$ 0.10
Subsequent Event [Member] \| Class B Common Stock [Member]
Subsequent Event [Line Items]
Semi-annual cash dividend	$ 0.10