Note 11 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Operating Loss Carryforwards		$ 5,500,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves		4,200,000
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Bad Debt Reserve for Tax Purposes of Qualified Lender		1,600,000		$ 1,600,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			$ 897,000
Unrecognized Tax Benefits, Income Tax Penalties Expense		0	$ 0
NUBILs [Member]
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 900,000
Domestic Tax Authority [Member] | Maximum [Member]
Operating Loss Carryforwards		405,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards		$ 0