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Investment in ARMA Energy, Inc - Additional Information (Detail) (Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member], Arma Energy, Inc. [Member], USD $)	12 Months Ended
	Jun. 27, 2013
Variable Interest Entities Not Consolidated [Line Items]
Preferred stock received	71.00%
Ownership stock sale percentage	58.00%
Equity method investments	$ 0
Promissory Note [Member]
Variable Interest Entities Not Consolidated [Line Items]
Promissory note, Principal amount	500,000
Promissory note, Maturity period	5 years
Annual principal payment	$ 100,000

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Initial Ownership Of Preferred Stock Received In Sale

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Face (par) amount of debt instrument at time of issuance.

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