Note 10 - Pension and Other Postretirement Benefits (Details) - Summary of Amount in Accumulated Other Comprehensive Loss (USD $)	Dec. 31, 2013	Dec. 31, 2012
U.S. Plan [Member]
Note 10 - Pension and Other Postretirement Benefits (Details) - Summary of Amount in Accumulated Other Comprehensive Loss [Line Items]
Unrecognized net loss	$ 818,366	$ 1,636,551
	818,366	1,636,551
Canadian Plan [Member]
Note 10 - Pension and Other Postretirement Benefits (Details) - Summary of Amount in Accumulated Other Comprehensive Loss [Line Items]
Unrecognized net loss	514,541	599,824
	$ 514,541	$ 599,824