Note 12 - Commitments and Contingencies (Details) - Rent Expense and Rent Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Rent Expense and Rent Income [Abstract]
Rent income	$ 2	$ 4	$ 6	$ 8
Rent expense	142	142	284	282
Net	$ 140	$ 138	$ 278	$ 274