Note 10 - Short-term Borrowings - Overnight Repurchase Agreements (Details) - Federal Funds Purchased - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Average daily balance	$ 2,781	$ 8,637
Average daily interest rate	5.09%	1.76%
Maximum month-end balance	$ 2,230	$ 129,630
Weighted average rate as of December 31	5.20%	4.70%

Represents information about the maximum month end balance during the period.

No definition available.

Name:	qcrh_MaximumMonthEndBalanceDuringThePeriod
Namespace Prefix:	qcrh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration