Note 6 - Pension Benefits (Details) (Canadian Plan [Member])	9 Months Ended
	Sep. 30, 2013
Canadian Plan [Member]
Note 6 - Pension Benefits (Details) [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	3.00%
Defined Contribution Plan Employee Elective Employer Contribution Percent	50.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent	5.00%