v3.25.2
Note 5 - DERIVATIVES AND HEDGING ACTIVITIES - Summary of Hedged Interest Rate Swap and Cap Derivatives (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Derivative Asset $ 184,982 $ 186,781
Derivative Liabilities (209,505) (214,823)
Hedged Derivatives | Cash Flow Hedges | Interest rate swaps    
Derivative Liability, Notional Amount 300,000  
Derivative, Notional Amount 114,310  
Derivative Asset 852 1,905
Derivative Liabilities (23,056) (30,623)
Derivative Assets (Liabilities), net (211) 1,855
Derivative Liabilities (21,993) (30,573)
Hedged Derivatives | Cash Flow Hedges | QCR Holdings Statutory Trust V    
Derivative Asset, Notional Amount $ 10,000  
Receive Rate 6.61%  
Pay Rate 4.54%  
Derivative Asset $ 185 427
Hedged Derivatives | Cash Flow Hedges | Community National Statutory Trust III    
Derivative Asset, Notional Amount $ 3,500  
Receive Rate 6.33%  
Pay Rate 4.75%  
Derivative Asset $ 86 197
Hedged Derivatives | Cash Flow Hedges | Guaranty Bankshares Statutory Trust I    
Derivative Asset, Notional Amount $ 4,500  
Receive Rate 6.33%  
Pay Rate 4.75%  
Derivative Asset $ 67 153
Hedged Derivatives | Cash Flow Hedges | Community National Statutory Trust II    
Derivative Asset, Notional Amount $ 3,000  
Receive Rate 6.76%  
Pay Rate 5.17%  
Derivative Asset $ 58 132
Hedged Derivatives | Cash Flow Hedges | QCR Holdings Statutory Trust II    
Derivative Asset, Notional Amount $ 10,000  
Receive Rate 7.41%  
Pay Rate 5.85%  
Derivative Asset $ 193 443
Hedged Derivatives | Cash Flow Hedges | QCR Holdings Statutory Trust III    
Derivative Asset, Notional Amount $ 8,000  
Receive Rate 7.41%  
Pay Rate 5.85%  
Derivative Asset $ 154 353
Hedged Derivatives | Cash Flow Hedges | Guaranty Statutory Trust II    
Derivative Asset, Notional Amount $ 10,310  
Receive Rate 6.04%  
Pay Rate 4.09%  
Derivative Asset $ 109 200
Hedged Derivatives | Cash Flow Hedges | QCR Holdings Subordinated Note    
Derivative Liability, Notional Amount $ 65,000  
Receive Rate 4.36%  
Pay Rate 4.02%  
Derivative Liabilities $ (1,063) (50)
Hedged Derivatives | Cash Flow Hedges | Loans, one    
Derivative Liability, Notional Amount $ 35,000  
Receive Rate 1.40%  
Pay Rate 4.43%  
Derivative Liabilities $ (4,098) (5,445)
Hedged Derivatives | Cash Flow Hedges | Loans, two    
Derivative Liability, Notional Amount $ 50,000  
Receive Rate 1.40%  
Pay Rate 4.43%  
Derivative Liabilities $ (5,855) (7,779)
Hedged Derivatives | Cash Flow Hedges | Loans, three    
Derivative Liability, Notional Amount $ 40,000  
Receive Rate 1.40%  
Pay Rate 4.43%  
Derivative Liabilities $ (4,693) (6,233)
Hedged Derivatives | Cash Flow Hedges | Loans, four    
Derivative Liability, Notional Amount $ 25,000  
Receive Rate 1.30%  
Pay Rate 4.43%  
Derivative Liabilities $ (2,950) (3,916)
Hedged Derivatives | Cash Flow Hedges | Loan five    
Derivative Liability, Notional Amount $ 15,000  
Receive Rate 1.91%  
Pay Rate 4.43%  
Derivative Liabilities $ (440) (720)
Hedged Derivatives | Cash Flow Hedges | Loan six    
Derivative Liability, Notional Amount $ 50,000  
Receive Rate 1.91%  
Pay Rate 4.43%  
Derivative Liabilities $ (1,466) (2,400)
Hedged Derivatives | Cash Flow Hedges | Loan seven    
Derivative Liability, Notional Amount $ 35,000  
Receive Rate 1.91%  
Pay Rate 4.43%  
Derivative Liabilities $ (1,026) (1,680)
Hedged Derivatives | Cash Flow Hedges | Loan eight    
Derivative Liability, Notional Amount $ 50,000  
Receive Rate 1.91%  
Pay Rate 4.43%  
Derivative Liabilities $ (1,465) (2,400)
Hedged Derivatives | Fair Value Hedges | Interest rate swaps    
Derivative, Notional Amount 325,000  
Derivative Liabilities (2,393) (335)
Derivative Assets (Liabilities), net (2,393) (335)
Hedged Derivatives | Fair Value Hedges | Loan Nine    
Derivative, Notional Amount $ 15,000  
Receive Rate 4.32%  
Pay Rate 4.60%  
Derivative Liabilities $ (3) (35)
Hedged Derivatives | Fair Value Hedges | Loan ten    
Derivative, Notional Amount $ 25,000  
Receive Rate 4.32%  
Pay Rate 4.38%  
Derivative Liabilities $ (47) (77)
Hedged Derivatives | Fair Value Hedges | Loan Eleven    
Derivative, Notional Amount $ 15,000  
Receive Rate 4.32%  
Pay Rate 4.38%  
Derivative Liabilities $ (28) (46)
Hedged Derivatives | Fair Value Hedges | Loan Twelve    
Derivative, Notional Amount $ 20,000  
Receive Rate 4.32%  
Pay Rate 4.38%  
Derivative Liabilities $ (37) (61)
Hedged Derivatives | Fair Value Hedges | Loan Thirteen    
Derivative, Notional Amount $ 30,000  
Receive Rate 4.32%  
Pay Rate 4.21%  
Derivative Liabilities $ (144) (79)
Hedged Derivatives | Fair Value Hedges | Loan fourteen    
Derivative, Notional Amount $ 15,000  
Receive Rate 4.32%  
Pay Rate 4.21%  
Derivative Liabilities $ (72) (40)
Hedged Derivatives | Fair Value Hedges | Loan fifteen    
Derivative, Notional Amount $ 20,000  
Receive Rate 4.32%  
Pay Rate 4.21%  
Derivative Liabilities $ (96) (53)
Hedged Derivatives | Fair Value Hedges | Loan sixteen    
Derivative, Notional Amount $ 32,500  
Receive Rate 4.32%  
Pay Rate 4.08%  
Derivative Liabilities $ (270) (44)
Hedged Derivatives | Fair Value Hedges | Loan seventeen    
Derivative, Notional Amount $ 15,000  
Receive Rate 4.32%  
Pay Rate 4.08%  
Derivative Liabilities $ (125) (20)
Hedged Derivatives | Fair Value Hedges | Loan Eighteen    
Derivative, Notional Amount $ 20,000  
Receive Rate 4.32%  
Pay Rate 4.08%  
Derivative Liabilities $ (166) (27)
Hedged Derivatives | Fair Value Hedges | Loan Nineteen    
Derivative, Notional Amount $ 32,500  
Receive Rate 4.32%  
Pay Rate 3.98%  
Derivative Asset   14
Derivative Liabilities $ (364)  
Hedged Derivatives | Fair Value Hedges | Loan Twenty    
Derivative, Notional Amount $ 15,000  
Receive Rate 4.32%  
Pay Rate 3.98%  
Derivative Asset   6
Derivative Liabilities $ (168)  
Hedged Derivatives | Fair Value Hedges | Loan twenty one    
Derivative, Notional Amount $ 25,000  
Receive Rate 4.32%  
Pay Rate 3.98%  
Derivative Asset   11
Derivative Liabilities $ (280)  
Hedged Derivatives | Fair Value Hedges | Loan twenty two    
Derivative, Notional Amount $ 30,000  
Receive Rate 4.32%  
Pay Rate 3.90%  
Derivative Asset   77
Derivative Liabilities $ (395)  
Hedged Derivatives | Fair Value Hedges | Loan twenty three    
Derivative, Notional Amount $ 15,000  
Receive Rate 4.32%  
Pay Rate 3.90%  
Derivative Asset   $ 39
Derivative Liabilities $ (198)