Note 5 - Taxes On Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 0	$ 0	$ 0	$ 0
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	1,388		1,388		$ 1,031
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 156		$ 156		$ 135