Note 12 - Intangible assets, net (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Amortization of Intangible Assets	$ 261,000	$ 132,000	$ 523,000	$ 198,000
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year	511,000		511,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,021,000		1,021,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,021,000		1,021,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,021,000		1,021,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 982,000		$ 982,000