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Note 6 - Financial Instruments and Fair Value (Detail) (USD $)	12 Months Ended
	Dec. 31, 2011	Jun. 30, 2012
Available-for-sale Securities, Debt Securities, Noncurrent	$ 6,628,000	$ 6,628,000
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis		7,600,000
Derivative, Basis Spread on Variable Rate		225.00%
Asset Impairment Charges	1,000,000
Notional Amount of Interest Rate Cash Flow Hedge Derivatives		43,600,000
Interest Rate Cash Flow Hedge Liability at Fair Value	$ 2,233,000	$ 2,239,000

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The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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