Note 7 - Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]

	Year Ended
	December 31, 2018		December 31, 2017
Unrealized loss at beginning of period, net of tax	$	(805,027)	$	(932,156)
Amount reclassified from accumulated other comprehensive income to noninterest expense related to hedge ineffectiveness		27,407		79,757
Amount reclassified from accumulated other comprehensive income to interest expense related to caplet amortization		575,247		405,134
Amount of loss recognized in other comprehensive income, net of tax		(1,073,815)		(357,762)
Unrealized loss at end of period, net of tax	$	(1,276,188)	$	(805,027)

Derivatives Not Designated as Hedging Instruments [Table Text Block]

		December 31, 2018				December 31, 2017
				Estimated				Estimated
		Notional Amount		Fair Value		Notional Amount		Fair Value
Non-Hedging Interest Rate Derivatives Assets:
Interest rate swap contracts	$	445,021,807	$	22,195,713	$	230,434,728	$	4,397,238
Non-Hedging Interest Rate Derivatives Liabilities:
Interest rate swap contracts	$	445,021,807	$	22,195,713	$	230,434,728	$	4,397,238

Interest rate cap

Notes Tables

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

			Balance Sheet			1-Month LIBOR			Fair Value as of
Hedged Instrument	Effective Date	Maturity Date	Location		Notional Amount	Strike Rate			December 31, 2018		December 31, 2017
1-month FHLB Advance	6/3/2014	6/5/2019	Other Assets	$	15,000,000	0.93	%	$	116,775	$	190,085
1-month FHLB Advance	6/5/2014	6/5/2021	Other Assets		15,000,000	1.43	%		342,037		316,615
				$	30,000,000			$	458,812	$	506,700

Interest rate swap

Notes Tables

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

			Balance Sheet							Fair Value as of
Hedged Instrument	Effective Date	Maturity Date	Location		Notional Amount	Receive Rate		Pay Rate		December 31, 2018
QCR Holdings Statutory Trust II	9/30/2018	9/30/2028	Other Liabilities	$	10,000,000	5.65	%	5.85	%	$	(298,367)
QCR Holdings Statutory Trust III	9/30/2018	9/30/2028	Other Liabilities		8,000,000	5.65	%	5.85	%		(238,693)
QCR Holdings Statutory Trust V	7/7/2018	7/7/2028	Other Liabilities		10,000,000	3.99	%	4.54	%		(287,716)
Community National Statutory Trust II	9/20/2018	9/20/2028	Other Liabilities		3,000,000	4.96	%	5.17	%		(89,008)
Community National Statutory Trust III	9/15//2018	9/15/2028	Other Liabilities		3,500,000	4.54	%	4.75	%		(103,858)
Guaranty Bankshares Statutory Trust I	9/15/2018	9/15/2028	Other Liabilities		4,500,000	4.54	%	4.75	%		(133,532)
				$	39,000,000	4.94	%	5.24	%	$	(1,151,174)