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Name:	us-gaap_VariableRateAxis=qnbc_FixedToFloatingRateMember
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Note 14 - Subordinated Debt (Details Textual) - USD ($) $ in Thousands		6 Months Ended
	Aug. 30, 2024	Jun. 30, 2026	Apr. 01, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Subordinated debt		$ 54,018		$ 39,268
Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument [Line Items]
Debt instrument basis point and interest rate	5.45%
Subordinated Debt [Member]
Debt Instrument [Line Items]
Issued of aggregate principal amount	$ 40,000
Debt instrument maturity date	Sep. 01, 2034
Interest fixed annual rate	8.875%
Debt instrument, frequency of periodic payment	semi-annually
Subordinated debt		14,650
Unamortized origination costs		$ 632
Subordinated Debt [Member] \| 2024 Subordinated Notes [Member]
Debt Instrument [Line Items]
Interest fixed annual rate		8.50%
Subordinated debt		$ 1,650
Subordinated Debt [Member] \| Victory Merger [Member]
Debt Instrument [Line Items]
Subordinated debt			$ 17,650
Subordinated Debt [Member] \| Victory Merger [Member] \| 2024 Subordinated Notes [Member]
Debt Instrument [Line Items]
Subordinated debt cancelled upon acquisition			$ 3,000
Subordinated Debt [Member] \| Fixed to Floating Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis point and interest rate	8.875%
Subordinated Debt [Member] \| Secured Overnight Financing Rate (SOFR) [Member] \| 2024 Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt instrument basis point and interest rate		4.42%