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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2021
Retirement Benefits [Abstract] |
Summary of Accumulated Benefit Obligation in Excess of Plan Assets | Pretax amounts for net periodic benefit cost and other amounts for the defined benefit pension plans consisted of the following components:
| Three months ended September 30, |  | Nine months ended September 30,
| 2021 |  | 2021
Service cost | $ | 104 |  |  | $ | 318 |
Interest cost | 5 |  |  | 16 |
Return on plan assets | (4) |  |  | (11) |
Net periodic pension cost | 105 |  |  | 323 |
Total recognized in net periodic benefit cost | $ | 105 |  |  | $ | 323 |
Defined benefit cost: |  |  |
Expected long-term rate of return on plan assets | 0.50 | % |  | 0.50 | %

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- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + 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 (i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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