CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Allowance for doubtful accounts	$ 35	$ 100
Common stock, par value	$ 0.0033	$ 0.0033
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	8,049,622	8,049,622
Common stock, shares outstanding	8,018,932	7,956,410
Treasury stock, shares	30,690	93,212