XML 65 R54.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Note 9 - Revenue Recognition (Details) | 6 Months Ended
--- | ---
Jun. 30, 2018
REVENUE RECOGNITION |
Percent of Revenue not Subject to New Accounting Policy | 89.00%

X
- Definition The percent of the companies revenue that is not subject to certain new accounting policies. + References No definition available. + Details
Name: | qcrh_PercentOfRevenueNotSubjectToNewAccountingPolicy
Namespace Prefix: | qcrh_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RevenueFromContractWithCustomerAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration