Note 17 - Major Assumptions Used in Determining the Benefit Obligations and Net Benefit Cost (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
United States Pension Plan of US Entity [Member]
Discount rate	4.20%	3.85%
Discount rate	3.85%	4.80%	3.90%
Expected return on plan assets	7.00%	7.25%	7.25%
Supplemental Employee Retirement Plan [Member]
Discount rate	1.55%	1.35%
Discount rate	1.35%	1.40%	1.35%
Foreign Pension Plan [Member]
Discount rate	3.35%	2.40%
Rate of compensation increase	2.55%	2.20%
Discount rate	2.40%	3.70%	3.40%
Rate of compensation increase	2.20%	2.20%	2.50%