Note 8 - Taxes on Income (Tax Benefits) Valuation Allowance Activity (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Valuation Allowance Activity [Abstract]
Balance, at beginning of year	$ 7,797,000	$ 6,574,000	$ 4,691,000
Additions	14,442,000	1,754,000	2,062,000
Reversals	(2,090,000)	(131,000)	(191,000)
Other adjustments	(796,000)	(400,000)	12,000
Balance, at end of year	19,353,000	7,797,000	6,574,000
Undistributed Earnings of Foreign Subsidiaries	$ 277,000,000