Note 10 - Pension and Other Postretirement Benefits (Details) - Components of Net Periodic Benefit Cost (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
General and Administrative Expense [Member] | U.S. Plan [Member]
Note 10 - Pension and Other Postretirement Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Service cost			$ 21,100
Interest cost	155,248	166,534	172,221
Expected return on plan assets	(167,347)	(154,411)	(142,104)
Net actuarial loss	116,814	93,661	51,287
Settlement costs	138,357
Net periodic benefit cost	243,072	105,784	102,504
General and Administrative Expense [Member] | Canadian Plan [Member]
Note 10 - Pension and Other Postretirement Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Interest cost	55,158	58,812	76,866
Expected return on plan assets	(68,171)	(73,715)	(84,452)
Amortization of prior service cost	36,319	34,007	15,070
Net periodic benefit cost	23,306	19,104	7,484
U.S. Plan [Member]
Note 10 - Pension and Other Postretirement Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Interest cost	155,248	166,534
Net actuarial loss	394,013	(389,763)
Canadian Plan [Member]
Note 10 - Pension and Other Postretirement Benefits (Details) - Components of Net Periodic Benefit Cost [Line Items]
Interest cost	50,692	58,812
Net actuarial loss	$ (6,992)	$ (60,912)