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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2021
Compensation And Retirement Disclosure [Abstract] |
Components of Net Periodic Benefit Expense | The components of the Company’s net periodic benefit expense for its pension and post-retirement obligations were as follows (in thousands):
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2021 |  |  | 2020 |  |  | 2021 |  |  | 2020 |
Service cost |  | $ | 1,049 |  |  | $ | 924 |  |  | $ | 3,147 |  |  | $ | 2,770 |
Interest cost on projected benefit obligation |  |  | 551 |  |  |  | 635 |  |  |  | 1,653 |  |  |  | 1,905 |
Expected return on plan assets |  |  | (1,306 | ) |  |  | (1,284 | ) |  |  | (3,919 | ) |  |  | (3,852 | )
Amortization of unrecognized prior service credit |  |  | (1 | ) |  |  | (8 | ) |  |  | (2 | ) |  |  | (26 | )
Amortization of unrecognized net actuarial loss |  |  | 186 |  |  |  | 321 |  |  |  | 557 |  |  |  | 967 |
Net periodic benefit expense |  | $ | 479 |  |  | $ | 588 |  |  | $ | 1,436 |  |  | $ | 1,764 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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