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Note 11 - Accrued Pension Liabilities (Details) - Changes in the Pension Plans' Benefit Obligation and Fair Value of Assets - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Changes in the Pension Plans' Benefit Obligation and Fair Value of Assets [Abstract]      
Accumulated benefit obligation $ 937 $ 1,194  
Change in benefit obligation      
Benefit obligation at beginning of year 1,205 1,239  
Service cost 5 5 $ 5
Interest cost 17 29 35
Benefits paid from the plan (96) (152)  
Actuarial loss (62) 218  
Exchange rates and others (123) (134)  
Benefit obligation at end of year 946 1,205 1,239
Change in plan assets      
Fair value of plan assets at beginning of year 116 258  
Actual return on plan assets 5 6  
Benefits paid from the plan (56) (127)  
Exchange rates (11) (21)  
Fair value of plan assets at end of year $ 54 $ 116 $ 258