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Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Sep. 30, 2012
Debt Instrument [Line Items]
Non current maturities	$ 14,457	$ 21,683
Less-current maturities	4,368	2,000
Total long-term debt	10,089	19,683
Revolving credit agreement
Debt Instrument [Line Items]
Non current maturities	5,089	11,338
Term loan
Debt Instrument [Line Items]
Non current maturities	7,000	8,000
Promissory Note
Debt Instrument [Line Items]
Non current maturities	$ 2,368	$ 2,345

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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