v3.26.1
DERIVATIVES AND HEDGING (Schedule of cash flow hedging instruments, location) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative $ 244 $ (85) $ 475 $ (509)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 181 (268) 348 (860)
Net interest income 52,939 49,209 105,297 98,067
Cash Flow Hedging        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 1,144 (341) 2,101 (1,871)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 277 802 559 1,539
Cash Flow Hedging | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 614 (44) 1,224 (895)
Cash Flow Hedging | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 530 (297) 877 (976)
Cash Flow Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Cash Flow Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseDeposits        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax       1,293
Cash Flow Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 30 130 68 246
Cash Flow Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 30 130 68 246
Cash Flow Hedging | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 247 672 491  
Cash Flow Hedging | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 247 672 491 1,293
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 1,144 (341) 2,101 (1,871)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 277 802 559 1,539
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 614 (44) 1,224 (895)
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 530 (297) 877 (976)
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseDeposits        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax       1,293
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 30 130 68 246
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 30 130 68 246
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 247 672 491  
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Included Component | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 247 672 491 1,293
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 0 0 0 0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Amount of gain (loss) recognized in OCI on derivative 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseDeposits        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax       0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0  
Cash Flow Hedging | AOCI, Derivative Qualifying as Hedge, Excluded Component | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax 0 0 0 0
Fair Value Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge (878) 834 (2,062) 2,965
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments 872 (59) 2,053 (1,576)
Fair Value Hedging | Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseSubordinatedNotesAndDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0 0 0
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments 0 0 0 0
Fair Value Hedging | Location, Statement of Income, Balance [Axis]: cac:InterestExpenseBorrowingsExcludingSubordinatedNotesandDebentures | Interest rate contracts        
Derivative Instruments and Hedging Activities Disclosures [Line Items]        
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge 0 0 0 0
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments $ 0 $ 0 $ 0 $ 0