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Note 18 - Derivative Financial Instruments (Detail) (USD $)	Dec. 31, 2012
Junior Subordinated Notes	$ 61,900,000
Notional Amount of Interest Rate Derivative Instruments Not Designated as Hedging Instruments	118,000,000
Notional Amount of Interest Rate Cash Flow Hedge Derivatives	4,300,000
Floating Rate Junior Subordinated Debentures [Member]
Derivative, Amount of Hedged Item	$ 18,000,000

Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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