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

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Debt [Table Text Block]

	2018		2017
Wholesale structured repurchase agreements	$	35,000,000	$	35,000,000
Term notes		23,250,000		31,000,000
Subordinated debentures		4,782,318		—
Revolving line of credit		9,000,000		—
	$	72,032,318	$	66,000,000

Schedule of Wholesale Repurchase Agreements [Table Text Block]

	2018		2017
Residential mortgage-backed and related securities	$	38,870,228	$	40,503,002
Total securities pledged to wholesale customer repurchase agreements		38,870,228		40,503,002
Less: overcollateralized position		3,870,228		5,503,002
	$	35,000,000	$	35,000,000

Schedule of Prepayments of Debt [Table Text Block]

	2016
			Weighted		Range of
			Average		Maturity		Prepayment
Date of Restructuring	Amount		Interest Rate		Dates		Fees
First Quarter of 2016	$	10,000,000	3.97	%	July 2018	$	759,000
Third Quarter of 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

Schedule of Line of Credit Facilities [Table Text Block]

	December 31, 2018				December 31, 2017
			Weighted				Weighted
			Average				Average
			Interest Rate				Interest Rate
	Amount Due		at Year-End		Amount Due		at Year-End
Maturity:
Year ending December 31:
2019	$	10,000,000	3.59	%	$	10,000,000	3.44	%
2020		25,000,000	2.48			25,000,000	2.48
Total Wholesale Structured Repurchase Agreements	$	35,000,000	2.80	%	$	35,000,000	2.76	%

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

	As of December 31, 2018
2019	$	7,750,000
2020		7,750,000
2021		7,750,000
	$	23,250,000

Schedule of Subordinated Borrowing [Table Text Block]

	2018		2017
Note Payable to QCR Holdings Capital Trust II	$	10,310,000	$	10,310,000
Note Payable to QCR Holdings Capital Trust III		8,248,000		8,248,000
Note Payable to QCR Holdings Capital Trust V		10,310,000		10,310,000
Note Payable to Community National Trust II		3,093,000		3,093,000
Note Payable to Community National Trust III		3,609,000		3,609,000
Note Payable to Guaranty Bankshares Statutory Trust I*		4,640,000		4,640,000
Market Value Discount per ASC 805**		(2,539,957)		(2,723,513)
	$	37,670,043	$	37,486,487

*     As part of the acquisition of Guaranty Bank, the Company assumed one junior subordinated debenture with a fair value of $3,857,275.

**   Market value discount includes discount on junior subordinated debt acquired in 2013 as part of the purchase of Community National and junior subordinated debt acquired in 2017 as part of the purchase of Guaranty Bank.

Springfield Bancshares

Notes Tables

Schedule of Subordinated Borrowing [Table Text Block]

	Amount Outstanding	Interest Rate
	as of December 31, 2018	as of December 31, 2018		Maturity Date
Subordinated debenture dated 4/30/16	$ 2,000,000	4.00	%	4/30/2026
Subordinated debenture dated 9/15/16	3,000,000	4.00	%	9/15/2026
Market Value Discount per ASC 805	(217,682)
Total Subordinated Debentures	$ 4,782,318

Wholesale structured repurchase agreements

Notes Tables

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

	2018		2017
Secured	$	1,690,108	$	2,967,441
Unsecured		362,000,000		372,000,000
	$	363,690,108	$	374,967,441