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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2023
Employee Benefit Plans |
Schedule of pension information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Arrow SERP |
(thousands) |  | 2023 |  | 2022 |
Accumulated benefit obligation | ​ | $ | 77,737 | ​ | $ | 74,438 | ​
Changes in projected benefit obligation: | ​ |  |  | ​ |  |  | ​
Projected benefit obligation at beginning of year | ​ |  | 84,148 | ​ |  | 105,474 | ​
Service cost | ​ |  | 3,250 | ​ |  | 3,296 | ​
Interest cost | ​ |  | 4,082 | ​ |  | 2,782 | ​
Actuarial loss (gain) | ​ |  | 1,328 | ​ |  | (25,709) | ​
Benefits paid | ​ |  | (4,724) | ​ |  | (4,724) | ​
Plan amendments | ​ |  | — | ​ |  | 3,029 | ​
Projected benefit obligation at end of year | ​ |  | 88,084 | ​ |  | 84,148 | ​
Funded status | ​ | $ | (88,084) | ​ | $ | (84,148) | ​
Amounts recognized in the company's consolidated balance sheets: | ​ |  |  | ​ |  |  | ​
Current liabilities | ​ | $ | (6,186) | ​ | $ | (5,084) | ​
Noncurrent liabilities | ​ |  | (81,898) | ​ |  | (79,064) | ​
Net liability at end of year | ​ | $ | (88,084) | ​ | $ | (84,148) | ​
Components of net periodic pension cost: | ​ |  |  | ​ |  |  | ​
Service cost | ​ | $ | 3,250 | ​ | $ | 3,296 | ​
Interest cost | ​ |  | 4,082 | ​ |  | 2,782 | ​
Amortization of prior service cost | ​ | ​ | 336 | ​ | ​ | — | ​
Amortization of net loss | ​ |  | (668) | ​ |  | 776 | ​
Net periodic pension cost | ​ | $ | 7,000 | ​ | $ | 6,854 | ​
Weighted-average assumptions used to determine benefit obligation: | ​ |  |  | ​ |  |  | ​
Discount rate | ​ |  | 4.80 | % |  | 5.00 | %
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 | ​ |  | 5.00 | % |  | 2.70 | %
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
2024 | ​ | $ | 6,186
2025 | ​ |  | 6,076
2026 | ​ |  | 6,238
2027 | ​ |  | 6,109
2028 | ​ |  | 6,136
2029 - 2033 | ​ |  | 36,358

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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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