XML 40 R29.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Note 2 - Investment Securities - Amortized Cost and Fair Values of General Obligation Bonds and Revenue Bonds by Issuer's State (Details) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
--- | --- | ---
General Obligation Bonds [Member] |  |
Number of issuers | 112 | 116
Amortized cost | $ 99,815,329 | $ 117,205,307
Other Investments | 99,318,523 | 116,472,635
Average exposure per issuer (fair value) | $ 886,773 | $ 1,004,074
General Obligation Bonds [Member] | Iowa [Member] |  |
Number of issuers | 27 | 27
Amortized cost | $ 32,227,250 | $ 32,258,612
Other Investments | 32,252,723 | 32,231,936
Average exposure per issuer (fair value) | $ 1,194,545 | $ 1,193,775
General Obligation Bonds [Member] | Missouri [Member] |  |
Number of issuers | 15 | 14
Amortized cost | $ 8,060,239 | $ 8,291,192
Other Investments | 8,097,352 | 8,323,245
Average exposure per issuer (fair value) | $ 539,823 | $ 594,518
General Obligation Bonds [Member] | North Dakota [Member] |  |
Number of issuers | 7 | 7
Amortized cost | $ 22,169,480 | $ 22,169,050
Other Investments | 21,572,627 | 21,499,075
Average exposure per issuer (fair value) | $ 3,081,804 | $ 3,071,296
General Obligation Bonds [Member] | Illinois [Member] |  |
Number of issuers | 17 | 19
Amortized cost | $ 12,915,605 | $ 29,214,559
Other Investments | 13,060,349 | 29,308,438
Average exposure per issuer (fair value) | $ 768,256 | $ 1,542,549
General Obligation Bonds [Member] | Ohio [Member] |  |
Number of issuers | 8 | 8
Amortized cost | $ 6,785,433 | $ 6,790,398
Other Investments | 6,635,402 | 6,651,897
Average exposure per issuer (fair value) | $ 829,425 | $ 831,487
General Obligation Bonds [Member] | Other States [Member] |  |
Number of issuers | 38 | 41
Amortized cost | $ 17,657,322 | $ 18,481,496
Other Investments | 17,700,070 | 18,458,044
Average exposure per issuer (fair value) | $ 465,791 | $ 450,196
Revenue Bonds [Member] |  |
Number of issuers | 123 | 120
Amortized cost | $ 256,933,052 | $ 257,470,290
Other Investments | 254,960,357 | 255,496,690
Average exposure per issuer (fair value) | $ 2,072,848 | $ 2,129,139
Revenue Bonds [Member] | Iowa [Member] |  |
Number of issuers | 31 | 31
Amortized cost | $ 70,400,232 | $ 70,788,393
Other Investments | 70,771,347 | 71,142,393
Average exposure per issuer (fair value) | $ 2,282,947 | $ 2,294,916
Revenue Bonds [Member] | Missouri [Member] |  |
Number of issuers | 50 | 47
Amortized cost | $ 92,894,184 | $ 90,784,441
Other Investments | 91,892,614 | 89,664,013
Average exposure per issuer (fair value) | $ 1,837,852 | $ 1,907,745
Revenue Bonds [Member] | North Dakota [Member] |  |
Number of issuers | 4 | 4
Amortized cost | $ 7,992,074 | $ 8,089,067
Other Investments | 7,722,774 | 7,796,381
Average exposure per issuer (fair value) | $ 1,930,694 | $ 1,949,095
Revenue Bonds [Member] | Indiana [Member] |  |
Number of issuers | 22 | 22
Amortized cost | $ 46,469,290 | $ 47,994,737
Other Investments | 45,838,852 | 47,582,138
Average exposure per issuer (fair value) | $ 2,083,584 | $ 2,162,824
Revenue Bonds [Member] | Ohio [Member] |  |
Number of issuers | 3 | 3
Amortized cost | $ 13,650,000 | $ 13,650,000
Other Investments | 13,380,921 | 13,405,222
Average exposure per issuer (fair value) | $ 4,460,307 | $ 4,468,407
Revenue Bonds [Member] | Kansas [Member] |  |
Number of issuers | 6 | 6
Amortized cost | $ 13,260,612 | $ 13,476,366
Other Investments | 13,243,053 | 13,427,491
Average exposure per issuer (fair value) | $ 2,207,176 | $ 2,237,915
Revenue Bonds [Member] | Other States [Member] |  |
Number of issuers | 7 | 7
Amortized cost | $ 12,266,660 | $ 12,687,286
Other Investments | 12,110,796 | 12,479,052
Average exposure per issuer (fair value) | $ 1,730,114 | $ 1,782,722

X
- Definition Amount of average exposure (fair value) of securities, per issuer. + References No definition available. + Details
Name: | qcrh_AverageExposurePerIssuerFairValue
Namespace Prefix: | qcrh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities not classified as available-for-sale, held-to-maturity, or trading. + References No definition available. + Details
Name: | qcrh_MarketableSecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
Namespace Prefix: | qcrh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of issuers of debt securities. + References No definition available. + Details
Name: | qcrh_NumberOfIssuers
Namespace Prefix: | qcrh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of investments classified as other. + 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 210.5-02.12) -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 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_InvestmentTypeAxis=qcrh_GeneralObligationBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_IowaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_MissouriMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_NorthDakotaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_IllinoisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_OhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_OtherStatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=qcrh_RevenueBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_IndianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=qcrh_KansasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |