Note 9 - Options: Schedule of Share-based Compensation, Stock Options, Activity (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		39
Price Range Per Share Granted	- - -	49.18 - 50.72	- - -
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	7	4	3
Price Range Per Share Expired	26.58 - 49.18	25.59 - 49.18	17.71 - 33.30
Price Range Per Share Exercised		18.00 - 33.30	17.71 - 33.30
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	62	91	91
Price Range Per Share Outstanding	24.00 - 50.72	21.68 - 50.72	18.00 - 33.30
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	41	48	77
Price Range Per Share Total Exercisable	24.00 - 50.72	21.68 - 33.30	18.00 - 33.30
Common Stock
Common stock issued upon exercise of employee stock options, shares	22	35	55