Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets (USD $)	Jun. 30, 2014
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | United States Pension Plan of US Entity [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	$ 68,534
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] | Canadian Plan [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	22,351
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | United States Pension Plan of US Entity [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	235,903
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member] | Canadian Plan [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	1,052,498
Corporate or Government Bonds [Member] | Fair Value, Inputs, Level 1 [Member] | United States Pension Plan of US Entity [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	623,364
Equities [Member] | Fair Value, Inputs, Level 1 [Member] | United States Pension Plan of US Entity [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	1,105,218
United States Pension Plan of US Entity [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	2,033,019
Canadian Plan [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	$ 1,074,849