Note 12 - Intangible assets, net (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Amortization of Intangible Assets	$ 260,000	$ 116,000	$ 783,000	$ 313,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	255,000		255,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,019,000		1,019,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,019,000		1,019,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,019,000		1,019,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 980,000		$ 980,000