Note 8 - Other (Income) Expense (Details) - Other (income) expense: (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other (income) expense: [Abstract]
Loss (gain) on sale and impairment of investments			$ 70,148	$ (47,630)
Realized gain on trading securities			(253,419)
Loss on write-down of notes receivable to net realizable value			593,437
Dividend income		(70,000)		(127,500)
(Gain) on derivative liabilities	(12,842)		(35,842)
Rental income	(83,878)	(34,643)	(247,436)	(289,803)
Other	(24,945)	(51,763)	(49,221)	(47,177)
Other (income) expense	$ (121,665)	$ (156,406)	$ 77,667	$ (512,110)