Note 5 - Investment Securities - Available For Sale (Details) - Short-term Investment - Continuous Unrealized Loss Position (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Available for Sale (all unrealized holding gains and losses are less than 12 months at date of measurement)
Bonds – corporate issuances	$ 32,038,638	$ 8,037,620
Bonds – corporate issuances	(305,831)	(126,607)
Debt Securities [Member]
Available for Sale (all unrealized holding gains and losses are less than 12 months at date of measurement)
Bonds – corporate issuances with unrealized gains	3,499,580	998,330
Bonds – corporate issuances with unrealized gains	1,858	1,063
Bonds – corporate issuances with unrealized losses	28,539,058	7,039,290
Bonds – corporate issuances with unrealized losses	(307,689)	(127,670)
Bonds – corporate issuances	32,038,638	8,037,620
Bonds – corporate issuances	$ (305,831)	$ (126,607)