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Employee Benefit Plans - Schedule of Estimated Future Benefit Payments (Detail) $ in Thousands | Dec. 31, 2018 USD ($)
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Chesapeake Pension Plan |  |
Defined Benefit Plan, Expected Future Benefit Payments, Maturity [Line Items] |  |
2017 | $ 528 | [1]
2018 | 529 | [1]
2019 | 736 | [1]
2020 | 595 | [1]
2021 | 1,244 | [1]
Years 2022 through 2026 | 3,866 | [1]
FPU Pension Plan |  |
Defined Benefit Plan, Expected Future Benefit Payments, Maturity [Line Items] |  |
2017 | 3,091 | [1]
2018 | 3,221 | [1]
2019 | 3,299 | [1]
2020 | 3,485 | [1]
2021 | 3,558 | [1]
Years 2022 through 2026 | 18,570 | [1]
Chesapeake SERP |  |
Defined Benefit Plan, Expected Future Benefit Payments, Maturity [Line Items] |  |
2017 | 383 | [2]
2018 | 150 | [2]
2019 | 148 | [2]
2020 | 147 | [2]
2021 | 145 | [2]
Years 2022 through 2026 | 744 | [2]
Chesapeake Postretirement Plan |  |
Defined Benefit Plan, Expected Future Benefit Payments, Maturity [Line Items] |  |
2017 | 96 | [2]
2018 | 85 | [2]
2019 | 82 | [2]
2020 | 81 | [2]
2021 | 64 | [2]
Years 2022 through 2026 | 275 | [2]
FPU Medical Plan |  |
Defined Benefit Plan, Expected Future Benefit Payments, Maturity [Line Items] |  |
2017 | 94 | [2]
2018 | 87 | [2]
2019 | 91 | [2]
2020 | 93 | [2]
2021 | 80 | [2]
Years 2022 through 2026 | $ 402 | [2]
[1] | The pension plan is funded; therefore, benefit payments are expected to be paid out of the plan assets.
[2] | Benefit payments are expected to be paid out of our general funds.

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- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. + 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 (f) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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