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Note 6 - Long-Term Debt (Details) - Summary of Long-term Debt (USD $)	Sep. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt, gross	$ 49,676,000	$ 49,000,000
Less current portion	2,533,000	49,000,000
Long-term debt	47,143,000
Wells Fargo Revolving Loans [Member]
Debt Instrument [Line Items]
Long-term debt, gross	30,143,000	29,000,000
American AgCredit Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 19,533,000	$ 20,000,000

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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