Note 10 - Income Taxes (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Increase (Decrease) in Accrued Taxes Payable (in Dollars)			$ (5,500,000)
Effective Income Tax Rate, Continuing Operations	38.90%	39.90%	29.10%
Deferred Tax Assets, Net of Valuation Allowance (in Dollars)	34,400,000
Deferred Tax Liabilities, Gross (in Dollars)	$ 35,237,000	$ 30,198,000