XML 120 R105.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 12 - Junior Subordinated Debentures - Trust Preferred Securities (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016
Amount Outstanding |  | $ 40,210,000 | $ 35,570,000
Interest Rate |  | 3.82% | 3.26%
Trust Preferred Securities [Member] | QCR Holdings Statuory Trust II [Member] |  |  |
Date issued | [1] | February 2004 |
Amount Outstanding | [1] | $ 10,310,000 | $ 10,310,000
Interest Rate | [1] | 4.54% | 3.85%
Trust Preferred Securities [Member] | QCR Holdings Statuory Trust II [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Interest Rate, Basis Spread | [1] | 2.85% |
Trust Preferred Securities [Member] | QCR Holdings Statutory Trust III [Member] |  |  |
Date issued |  | February 2004 |
Amount Outstanding |  | $ 8,248,000 | $ 8,248,000
Interest Rate |  | 4.54% | 3.85%
Trust Preferred Securities [Member] | QCR Holdings Statutory Trust III [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Interest Rate, Basis Spread |  | 2.85% |
Trust Preferred Securities [Member] | QCR Holdings Statutory Trust V [Member] |  |  |
Date issued |  | February 2006 |
Amount Outstanding |  | $ 10,310,000 | $ 10,310,000
Interest Rate |  | 2.91% | 2.43%
Trust Preferred Securities [Member] | QCR Holdings Statutory Trust V [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Interest Rate, Basis Spread |  | 1.55% |
Trust Preferred Securities [Member] | Community National Statutory Trust II [Member] |  |  |
Date issued |  | September 2004 |
Amount Outstanding |  | $ 3,093,000 | $ 3,093,000
Interest Rate |  | 3.80% | 3.17%
Trust Preferred Securities [Member] | Community National Statutory Trust II [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Interest Rate, Basis Spread |  | 2.17% |
Trust Preferred Securities [Member] | Community National Statutory Trust III [Member] |  |  |
Date issued |  | March 2007 |
Amount Outstanding |  | $ 3,609,000 | $ 3,609,000
Interest Rate |  | 3.32% | 2.71%
Trust Preferred Securities [Member] | Community National Statutory Trust III [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Interest Rate, Basis Spread |  | 1.75% |
Trust Preferred Securities [Member] | Guaranty Bankshares Statutory Trust I [Member] |  |  |
Date issued |  | May 2005 |
Amount Outstanding |  | $ 4,640,000 |
Interest Rate |  | 3.34% |
Trust Preferred Securities [Member] | Guaranty Bankshares Statutory Trust I [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Interest Rate, Basis Spread |  | 1.75% |
[1] | Original amount issued for QCR Holdings Statutory Trust II was $12,372,000.

X
- Definition Trust preferred securities date issued. + References No definition available. + Details
Name: | qcrh_DateIssued
Namespace Prefix: | qcrh_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | invest_InvestmentAxis=qcrh_TrustPreferredSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=qcrh_QcrHoldingsStatuoryTrustIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=qcrh_QcrHoldingsStatutoryTrustIIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=qcrh_QcrHoldingsStatutoryTrustVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=qcrh_CommunityNationalStatutoryTrustIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=qcrh_CommunityNationalStatutoryTrustIIIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=qcrh_GuarantyBanksharesStatutoryTrustIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |