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Debt - Maturities of Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Jun. 30, 2012
Debt Instrument [Line Items]
Noncurrent portion of debt	$ 85,037	$ 92,167
Promissory Notes [Member]
Debt Instrument [Line Items]
2013 (remaining six months)	2,993
2014	3,364
2015	560
2016	50
2017
Long term debt, total	6,967
Less: imputed interest and unamortized discounts	(433)
Less: current portion	(5,112)
Noncurrent portion of debt	1,422
Credit Facility [Member]
Debt Instrument [Line Items]
2013 (remaining six months)	5,000
2014	12,500
2015	17,500
2016	20,000
2017	40,000
Long term debt, total	95,000
Less: imputed interest and unamortized discounts	(1,873)
Less: current portion	(9,512)
Noncurrent portion of debt	$ 83,615

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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