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Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Promissory note payable to affiliate	$ 22,515	$ 24,185
Less current maturities	1,000	1,000
Total long-term debt	21,515	23,185
Revolving bank credit facility [Member]
Debt Instrument [Line Items]
Promissory note payable to affiliate	2,035	1,955
Note payable to affiliate [Member]
Debt Instrument [Line Items]
Promissory note payable to affiliate	$ 20,480	$ 22,230

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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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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Section S99

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