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EMPLOYEE BENEFITS - Narrative (Details) | 12 Months Ended
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Dec. 31, 2024 USD ($) executive_officer retiree shares | Dec. 31, 2023 USD ($) retiree shares | Dec. 31, 2022 USD ($) retiree shares | Dec. 31, 2018 executive_officer | Dec. 31, 2013 executive_officer
Health Insurance Coverage [Abstract] |  |  |  |  |
Cost of health care benefits | $ 8,900,000 | $ 8,100,000 | $ 8,400,000 |  |
Health coverage eligibility for retiring employees, minimum years of service | 50 years |  |  |  |
Retirees participating in health insurance | retiree | 1 | 1 | 1 |  |
Employee Stock Ownership Plan (ESOP) [Abstract] |  |  |  |  |
Contributions to the employee stock ownership plan (ESOP) | $ 1,000,000.0 | $ 1,000,000.0 | $ 1,000,000.0 |  |
Shares owned by the ESOP (in shares) | shares | 352,473 | 366,791 |  |  |
Supplemental Unemployment Benefits [Abstract] |  |  |  |  |
Long-term disability coverage, minimum years of service rendered for officers to automatically qualify | 3 years |  |  |  |
Long-term disability coverage, minimum annual salary level for officers to automatically qualify | $ 50,000 |  |  |  |
Long-term disability coverage, maximum benefit provided, per month | $ 15,000 |  |  |  |
401(k) [Abstract] |  |  |  |  |
Requisite service period | 30 days |  |  |  |
401(k) Plan expense | $ 2,200,000 | $ 2,200,000 | $ 2,000,000.0 |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Noncash Adjustment To Pension Liability | $ 299,000 | $ (948,000) |  |  |
Retirement Plan |  |  |  |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Defined benefit pension plan, minimum eligibility age | 65 years |  |  |  |
Early retirement election at reduced benefit levels, minimum eligibility age | 55 years |  |  |  |
Discount rate | 5.58% | 5.13% |  |  |
Number of shares of Company stock included in plan assets (in shares) | shares | 0 | 240,666 |  |  |
Expected long-term rate of return on plan assets | 6.13% | 6.13% | 6.13% |  |
Funded (under funded) status | $ 9,181,000 | $ 8,386,000 | $ 6,866,000 |  |
Accrued benefit (liability) asset recognized | 9,181,000 | $ 8,386,000 | $ 6,866,000 |  |
Expected future employer contributions, next fiscal year | $ 0 |  |  |  |
Retirement Plan Acquired |  |  |  |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Discount rate | 5.71% | 5.13% |  |  |
Expected long-term rate of return on plan assets | 6.13% | 6.13% | 6.13% |  |
Funded (under funded) status | $ 1,095,000 | $ 839,000 | $ 749,000 |  |
Accrued benefit (liability) asset recognized | 1,095,000 | $ 839,000 | 749,000 |  |
Expected future employer contributions, next fiscal year | $ 0 |  |  |  |
Restoration Plan |  |  |  |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Discount rate | 5.47% | 5.13% |  |  |
Funded (under funded) status | $ (16,848,000) | $ (16,176,000) | (15,463,000) |  |
Accrued benefit (liability) asset recognized | (16,848,000) | $ (16,176,000) | $ (15,463,000) |  |
Expected future employer contributions, next fiscal year | $ 852,000 |  |  |  |
Equity securities | Retirement Plan |  |  |  |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Target allocation | 8.50% |  |  |  |
Fixed income securities | Retirement Plan |  |  |  |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Target allocation | 89.50% |  |  |  |
Cash equivalents | Retirement Plan |  |  |  |  |
Defined Benefit Plan [Abstract] |  |  |  |  |
Target allocation | 2.00% |  |  |  |
Stock options |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Granted (shares) | shares | 0 | 0 | 0 |  |
Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Nonvested awards outstanding (in shares) | shares | 252,028 | 197,943 |  |  |
Performance Based Restricted Stock Units |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Nonvested awards outstanding (in shares) | shares | 51,369 | 28,654 |  |  |
Incentive Plan 2009 |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Number of additional shares (in shares) | shares | 410,000 |  |  |  |
Incentive Plan 2017 |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Common stock shares reserved and available for issuance (in shares) | shares | 2,460,000 |  |  |  |
Shares remaining available for grant for future awards (in shares) | shares | 883,849 |  |  |  |
Incentive Plan |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Nonvested awards outstanding (in shares) | shares | 267,260 | 201,315 | 277,600 |  |
Unrecognized compensation expense | $ 6,000,000.0 | $ 5,700,000 | $ 7,400,000 |  |
Unrecognized compensation, weighted-average period for recognition | 2 years 2 months 12 days |  |  |  |
Incentive Plan | Stock options |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Weighted-average remaining contractual life of options exercisable | 3 years 3 months 18 days |  |  |  |
Awards contractual term | 10 years |  |  |  |
Total intrinsic value of outstanding stock options | $ 147,000 |  |  |  |
Total intrinsic value of exercisable stock options | $ 147,000 |  |  |  |
Incentive Plan | Stock options | Minimum |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Awards vesting period | 3 years |  |  |  |
Incentive Plan | Stock options | Maximum |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Awards vesting period | 4 years |  |  |  |
Incentive Plan | Restricted Stock Units (RSUs) | Minimum |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Awards vesting period | 3 years |  |  |  |
Incentive Plan | Restricted Stock Units (RSUs) | Maximum |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Awards vesting period | 4 years |  |  |  |
Incentive Plan | Performance Based Restricted Stock Units |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Shares earned, performance period | 3 years |  |  |  |
Performance earnings, minimum payout (as a percentage) | 50.00% |  |  |  |
Performance earnings, target payout (as a percentage) | 100.00% |  |  |  |
Performance earnings, maximum payout (as a percentage) | 150.00% |  |  |  |
Executive officers |  |  |  |  |
Deferred Compensation Arrangements [Abstract] |  |  |  |  |
Number of employees included in the deferred compensation agreement with the Company | executive_officer | 29 |  |  |  |
Aggregate payment amount provided in the deferred compensation agreements | $ 9,900,000 |  |  |  |
Deferred Compensation Arrangement with Individual, Maximum Contractual Term | 15 years |  |  |  |
Number of individuals receiving payments | executive_officer | 9 |  |  |  |
Deferred compensation expense | $ 330,000 | 86,000 | 310,000 |  |
Total deferred compensation plan liability | $ 3,200,000 |  |  |  |
Split Dollar Life Insurance Agreements [Abstract] |  |  |  |  |
Number of employees originally covered by the split dollar agreements | executive_officer | 9 |  |  |  |
Aggregate death benefit amount provided originally in agreement, before inflation adjustment | $ 5,700,000 |  |  |  |
Number of employees covered by the split dollar agreements, Actively employed with us | executive_officer | 3 |  |  |  |
Number of retired covered officers death benefits were paid | executive_officer | 1 |  |  | 1 |
Number of active covered officers death benefits were paid | executive_officer |  |  |  |  | 1
Number of remaining employees covered by the split dollar agreements | executive_officer | 6 |  |  |  |
Aggregate death benefits for remaining executives, inflation adjusted | $ 6,000,000.0 |  |  |  |
Expense (credit to expense) of Split Dollar Retirement Bonus | (28,000) | (95,000) | 27,000 |  |
Total split dollar liability | $ 1,600,000 |  |  |  |
Executive officers | Minimum |  |  |  |  |
Split Dollar Life Insurance Agreements [Abstract] |  |  |  |  |
Inflation adjustment factor applied to benefits, annual | 3.00% |  |  |  |
Executive officers | Maximum |  |  |  |  |
Split Dollar Life Insurance Agreements [Abstract] |  |  |  |  |
Inflation adjustment factor applied to benefits, annual | 5.00% |  |  |  |
Employee | Incentive Plan |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Share-based compensation expense | $ 2,900,000 | 3,200,000 | 2,900,000 |  |
Tax benefit from share-based compensation expense | 618,000 | 671,000 | 605,000 |  |
Director | Incentive Plan |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Share-based compensation expense | 580,000 | 359,000 | 342,000 |  |
Tax benefit from share-based compensation expense | $ 122,000 | $ 75,000 | $ 72,000 |  |
Director | Incentive Plan | Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Payment Arrangement, Noncash Expense [Abstract] |  |  |  |  |
Awards vesting period | 1 year |  |  |  |

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