Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets (USD $)	Mar. 31, 2014
Cash and Cash Equivalents [Member] | U.S. Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	$ 122,413
Cash and Cash Equivalents [Member] | Canadian Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	19,916
Mutual Funds [Member] | U.S. Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	225,370
Mutual Funds [Member] | Canadian Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	1,243,752
Corporate Or Government Bonds [Member] | U.S. Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	636,540
Equities [Member] | U.S. Plan [Member] | Fair Value, Inputs, Level 1 [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	1,083,640
U.S. Plan [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	2,067,963
Canadian Plan [Member]
Note 6 - Pension Benefits (Details) - Fair Value Hierarchy of Plan Assets [Line Items]
Fair Value of Plan Assets	$ 1,263,668