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Redeemable Noncontrolling Interest (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Apr. 30, 2010	Jul. 31, 2010
Payments made to acquire noncontrolling interest		$ 31,000
Acquisition of noncontrolling interest	2,600	(2,690)
Specialty Sports Venture [Member]
Remaining percentage of ownership interest acquired	30.70%
Payments made to acquire noncontrolling interest	$ 31,000
Consolidated ownership interest	100.00%

X

- Definition

Acquisition Of Noncontrolling Interest

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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X

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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X

- Definition

The cash outflow associated with the purchase of noncontrolling interest during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 17
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3213-108585

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