Note 11 - Other Borrowings and Unused Lines of Credit (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Debt [Table Text Block]

	2016		2015
Wholesale structured repurchase agreements	$	45,000,000	$	110,000,000
Term note		30,000,000		-
Revolving line of credit		5,000,000		-
	$	80,000,000	$	110,000,000

Schedule of Wholesale Repurchase Agreements [Table Text Block]

	2016		2015
U.S. govt. sponsored agency securities	$	20,798,703	$	129,824,128
Residential mortgage-backed and related securities		31,321,028		-
Total securities pledged to wholesale customer repurchase agreements	$	52,119,731	$	129,824,128
Less: overcollateralized position		7,119,731		19,824,128
	$	45,000,000	$	110,000,000

Schedule of Prepayments of Debt [Table Text Block]

2016
Date of Restructuring	Amount		Weighted Average Interest Rate			Range of Maturity Dates	Prepayment Fees
First Quarter of 2016	$	10,000,000		3.97	%	July 2018	$	759,000
Third Quarter 2016		55,000,000		3.27	%	February 2019 to September 2020		4,010,000
Total for 2016	$	65,000,000		3.38	%		$	4,769,000

2015
Date of Restructuring	Amount		Weighted Average Interest Rate			Range of Maturity Dates	Prepayment Fees
Second Quarter of 2015	$	10,000,000		4.40	%	May 2019	$	1,202,000
Fourth Quarter of 2015		5,000,000		3.46	%	May 2019		382,000
Total for 2015	$	15,000,000		4.09	%		$	1,584,000

Schedule of Line of Credit Facilities [Table Text Block]

	December 31, 2016				December 31, 2015
			Weighted				Weighted
			Average				Average
			Interest Rate				Interest Rate
	Amount Due		at Year-End		Amount Due		at Year-End
Maturity:
Year ending December 31:
2017	$	10,000,000	3.00	%	$	10,000,000	3.00	%
2018		-	0.00			10,000,000	3.97
2019		10,000,000	3.44			45,000,000	3.40
2020		25,000,000	2.48			45,000,000	2.66
Total Wholesale Structured Repurchase Agreements	$	45,000,000	2.81	%	$	110,000,000	3.11	%

Schedule of Maturities of Long-term Debt [Table Text Block]

	As of December 31, 2016
2017		6,000,000
2018		6,000,000
2019		6,000,000
2020		6,000,000
2021		6,000,000
	$	30,000,000

Whole sale Repurchase Agreements [Member]

Notes Tables

Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets [Table Text Block]

	2016		2015
Secured	$	34,409,192	$	14,601,432
Unsecured		347,000,000		332,000,000
	$	381,409,192	$	346,601,432