Note 1 - Summary of Significant Accounting Policies (Detail) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2011
Restatement of Prior Year Income, Tax Effects (in Dollars)	$ (121,000)	$ (242,000)
Restatement of Prior Year Income, Net of Tax (in Dollars)	(175,000)	(349,000)
Impact of Restatement on Opening Retained Earnings, Net of Tax (in Dollars)	349,000	349,000
Other Pension Plans, Postretirement or Supplemental Plans, Defined Benefit [Member]
Restatement of Prior Year Income, Gross (in Dollars)	$ (296,000)	$ (591,000)

Net of tax adjustment in the annual report for the year in which a restatement is made, of the resulting effects on the net income of prior periods on the beginning balance of retained earnings for the current period.

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Resulting effect of restatement to correct an error, before tax effects, on the net income of prior periods for the year in which any adjustments are first made. In statements containing more than one period, discloses the effects for each period.

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- Definition

Resulting effect of restatement to correct an error, after tax effects, on the net income of prior periods for the year in which any adjustments are first made. In statements containing more than one period, discloses the effects for each period.

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- Definition

The tax effect of the restatement to correct an error in net income of prior periods for the year in which any adjustments are first made. In statements containing more than one period, disclose the effects for each period.

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