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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2024
Employee Benefit Plans |
Schedule of pension information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Arrow SERP |
(thousands) |  | 2024 |  | 2023 |
Accumulated benefit obligation | ​ | $ | 74,530 | ​ | $ | 77,737 | ​
Changes in projected benefit obligation: | ​ |  |  | ​ |  |  | ​
Projected benefit obligation at beginning of year | ​ |  | 88,084 | ​ |  | 84,148 | ​
Service cost | ​ |  | 3,193 | ​ |  | 3,250 | ​
Interest cost | ​ |  | 4,081 | ​ |  | 4,082 | ​
Actuarial (gain) loss | ​ |  | (6,602) | ​ |  | 1,328 | ​
Benefits paid | ​ |  | (5,724) | ​ |  | (4,724) | ​
Projected benefit obligation at end of year | ​ |  | 83,032 | ​ |  | 88,084 | ​
Funded status | ​ | $ | (83,032) | ​ | $ | (88,084) | ​
Amounts recognized in the company's consolidated balance sheets: | ​ |  |  | ​ |  |  | ​
Current liabilities | ​ | $ | (6,168) | ​ | $ | (6,186) | ​
Noncurrent liabilities | ​ |  | (76,864) | ​ |  | (81,898) | ​
Net liability at end of year | ​ | $ | (83,032) | ​ | $ | (88,084) | ​
Components of net periodic pension cost: | ​ |  |  | ​ |  |  | ​
Service cost | ​ | $ | 3,193 | ​ | $ | 3,250 | ​
Interest cost | ​ |  | 4,081 | ​ |  | 4,082 | ​
Amortization of prior service cost | ​ | ​ | 337 | ​ | ​ | 336 | ​
Amortization of net loss | ​ |  | (164) | ​ |  | (668) | ​
Net periodic pension cost | ​ | $ | 7,447 | ​ | $ | 7,000 | ​
Weighted-average assumptions used to determine benefit obligation: | ​ |  |  | ​ |  |  | ​
Discount rate | ​ |  | 5.50 | % |  | 4.80 | %
Rate of compensation increase | ​ |  | 5.00 | % |  | 5.00 | %
Expected return on plan assets | ​ |  | N/A | ​ |  | N/A | ​
Weighted-average assumptions used to determine net periodic pension cost: | ​ |  |  | ​ |  |  | ​
Discount rate | ​ |  | 4.80 | % |  | 5.00 | %
Rate of compensation increase | ​ |  | 5.00 | % |  | 5.00 | %
Expected return on plan assets | ​ |  | N/A | ​ |  | N/A | ​
Schedule of expected benefit payments | ​
​ | ​ | ​ | ​
(thousands) |  | Arrow SERP
2025 | ​ | $ | 6,168
2026 | ​ |  | 6,318
2027 | ​ |  | 6,183
2028 | ​ |  | 6,201
2029 | ​ |  | 6,792
2030 - 2034 | ​ |  | 36,382
Schedule of other comprehensive income items | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(thousands) |  | 2024 | ​ | 2023 | ​ | 2022
Actuarial (loss) gains, net of tax | ​ | $ | 5,027 | ​ | $ | (1,011) | ​ | $ | 19,548
Reclassification of actuarial loss (gain), net of tax (a) | ​ |  | (125) | ​ | ​ | (508) | ​ | ​ | 590
Prior service (costs), net of tax | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (2,304)
Reclassification of prior service costs, net of tax | ​ | ​ | 256 | ​ | ​ | 256 | ​ | ​ | —

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- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-4 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-2 + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (f) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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