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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2020
Pension Benefits [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Components of Net Periodic Benefit Cost |
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
Pension Benefits | 2020 |  | 2019 |  | 2020 |  | 2019
Interest cost | $ | 358 |  | $ | 466 |  | $ | 1,074 |  | $ | 1,398
Expected return on plan assets |  | (609) |  |  | (555) |  |  | (1,828) |  |  | (1,665)
Amortization of unrecognized net loss |  | 140 |  |  | 138 |  |  | 421 |  |  | 412
| $ | (111) |  | $ | 49 |  | $ | (333) |  | $ | 145
Postretirement Benefit Plan [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Components of Net Periodic Benefit Cost |
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
Postretirement Benefit Plan | 2020 |  | 2019 |  | 2020 |  | 2019
Service cost | $ | - |  | $ | 5 |  | $ | - |  | $ | 15
Interest cost |  | - |  |  | 46 |  |  | - |  |  | 136
Amortization of prior service cost |  | - |  |  | 4 |  |  | - |  |  | 11
Amortization of unrecognized net gain |  | - |  |  | (98) |  |  | - |  |  | (292)
| $ | - |  | $ | (43) |  | $ | - |  | $ | (130)

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + 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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