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Note 6 - Long-Term Debt (Details) - Long-Term Debt (USD $)	Dec. 31, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Long-term debt	$ 25,035,000us-gaap_LongTermDebt	$ 26,250,000us-gaap_LongTermDebt
Less payments due within one year included in current liabilities	2,375,000us-gaap_LongTermDebtCurrent	1,750,000us-gaap_LongTermDebtCurrent
Long-term debt less current maturities	22,660,000us-gaap_LongTermDebtNoncurrent	24,500,000us-gaap_LongTermDebtNoncurrent
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt	24,375,000	26,250,000
Note Payable, Maturing July 1, 2016 [Member]
Debt Instrument [Line Items]
Long-term debt	440,000
Note Payable, Maturing July 1, 2018 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 220,000

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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