Note 9 - Income Taxes (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Current Income Tax Expense (Benefit)	$ 600,000
Effective Income Tax Rate, Continuing Operations	8.60%	8.30%
Income Tax Expense Benefit - PreTax Income	1,400,000			400,000
Income Tax Expense Benefit - PreTax Income Percent	8.30%			3.30%
Income Tax Expense (Benefit)	555,000	(419,000)	1,412,000	368,000
Maximum [Member]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	37,000,000		37,000,000
Minimum [Member]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	10,500,000		10,500,000
Income Tax Provision [Member]
Income Tax Expense (Benefit)		$ 400,000