Note 11 - Fair Value of Financial Instruments (Details) - Carrying Value and Fair Value of Financial Assets and Liabilities (USD $)	Jun. 30, 2013		Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Marketable Securities	$ 3,776,530		$ 4,516,472
Investment in Marketable Securities	3,776,530		4,516,472
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in Marketable Securities	$ 3,776,530	[1]	$ 4,516,472

[1] The Company received $645,296 in principal repayments during the first six-months of 2013.