Note 11 - Intangible assets, net (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Disclosure Text Block [Abstract]
Amortization of Intangible Assets	$ 262,000	$ 260,000	$ 791,000	$ 783,000
Finite-Lived Intangible Assets, AmortizationExpense, Next Three Months	262,000		262,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,049,000		1,049,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	1,049,000		1,049,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,009,000		1,009,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 509,000		$ 509,000