Note 12 - Commitments and Contingencies (Details) - Rent Expense and Rent Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Rent Expense and Rent Income [Abstract]
Rent income	$ 7	$ 3	$ 13	$ 11
Rent expense	142	142	426	424
Net	$ 135	$ 139	$ 413	$ 413