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Employee Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2020
Employee Benefit Plans [Abstract] |
Schedule of Net Benefit Costs [Table Text Block] | Net periodic benefit cost for our defined benefit plans included the following components for the three and six months ended June 30, 2020 and 2019 (in thousands):
| Three Months Ended |  |  |  | Six Months Ended |  |
| June 30, |  |  |  | June 30, |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Service cost | $ | 856 |  |  | $ | 1,074 |  |  | $ | 1,526 |  |  | $ | 1,661 |
Interest cost | 731 |  |  | 1,010 |  |  | 1,449 |  |  | 1,995 |
Expected return on plan assets | (662) |  |  | (560) |  |  | (1,140) |  |  | (1,340) |
Amortization of actuarial loss | 555 |  |  | 37 |  |  | 669 |  |  | 290 |
Settlement loss | 2,100 |  |  | — |  |  | 2,100 |  |  | — |
Net periodic benefit cost | $ | 3,580 |  |  | $ | 1,561 |  |  | $ | 4,604 |  |  | $ | 2,606 |

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- Definition Employee Benefit Plans [Abstract] + References No definition available. + Details
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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=118255775&loc=d3e1928-114920 + Details
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