Note 8 - Income Taxes (Detail) (USD $)	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Income Tax Expense (Benefit)	$ 577,383		$ 422,592	$ 1,755,284	$ 750,906
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	2,212,383		(755,668)	5,749,901	866,251
Income Tax Reconciliation, Tax Credits, Research						100,000
Valuation Allowance, Deferred Tax Asset, Change in Amount		3,600,000
Unrecognized Tax Benefits	$ 100,000	$ 200,000		$ 100,000		$ 200,000