Note 6 - Purchase of Financial Assets (Details) (USD $)	1 Months Ended	0 Months Ended	1 Months Ended	4 Months Ended	8 Months Ended
	Sep. 23, 2014	May 12, 2014	Feb. 27, 2014	Dec. 31, 2014	Dec. 31, 2014
Transfers and Servicing [Abstract]
Loan Purchase Agreement, Financial Asset For Which Transfer Is Accounted As a Purchase, Total Commitment To Purchase	$ 18,100,000	$ 40,000,000
Loan Purchase Agreement, Financial Asset For Which Transfer Is Accounted As a Purchase, Par Value Purchased			12,900,000	18,100,000	27,600,000
Loan Purchase Agreement Financial Asset for Which Transfer is Accounted as a Purchase Interest Accrued				77,000
Loan Purchase Agreement Financial Asset for Which Transfer is Accounted as a Purchase Net Discount (Premium)				377,000	1,400,000
Payments for Loans			12,700,000	18,500,000	26,200,000
Transfers of Financial Assets Accounted for as Sale, Initial Fair Value of Assets Obtained as Proceeds	18,100,000		12,700,000
Loan Purchase Agreement, Transfer Of Financial Assets Accounted For As a Purchase, Maximum Monthly Loan Purchase		4,000,000
Loan Purchase Agreement, Financial Asset For Which Transfer Is Accounted As Sale, Loan Payments					$ 3,200,000