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Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2018
Retirement Benefits [Abstract] |
Schedule of Defined Benefit Plans Disclosures | The changes in the projected benefit obligation and the fair value of plan assets of our Benefit Plan for the years ended December 31, 2018 and 2017 were as follows (in thousands):
| 2018 |  | 2017
Changes in projected benefit obligation: |  |  |
Projected benefit obligation as of the beginning of the period | $ | 30,877 |  |  | $ | 28,914 |
Service cost | 548 |  |  | 614 |
Interest cost | 1,107 |  |  | 1,192 |
Actuarial (gain) loss | (2,917 | ) |  | 1,091 |
Benefits paid | (2,076 | ) |  | (934 | )
Projected benefit obligation as of December 31 | $ | 27,539 |  |  | $ | 30,877 |
Changes in fair value of plan assets: |  |  |
Fair value of plan assets as of the beginning of the period | $ | 23,461 |  |  | $ | 21,345 |
Actual return on plan assets | (1,131 | ) |  | 3,050 |
Benefits paid | (2,076 | ) |  | (934 | )
Fair value of plan assets as of December 31 | $ | 20,254 |  |  | $ | 23,461 |
Schedule of Accumulated and Projected Benefit Obligations | The reconciliation of the underfunded status of our Benefit Plans of December 31, 2018 and 2017 was as follows:
| 2018 |  | 2017
Projected benefit obligation | $ | 27,539 |  |  | $ | 30,877 |
Fair value of plan assets | 20,254 |  |  | 23,461 |
Underfunded status | $ | 7,285 |  |  | $ | 7,416 |
Gross amounts recognized in accumulated other comprehensive income: (1) |  |  |
Net actuarial gain | $ | 3,494 |  |  | $ | 2,965 |
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(1) | As of December 31, 2018, we had $0.1 million in accumulated other comprehensive income that is expected to be amortized into net periodic benefit cost in 2019.
Schedule of Assumptions Used | Weighted-average assumptions used to measure our projected benefit obligation as of December 31, 2018 and 2017 and net periodic benefit costs for the years ended December 31, 2018 and 2017 and the period from July 14, 2016, the date of acquisition, to December 31, 2016 are as follows:
| 2018 |  | 2017 |  | 2016
Projected benefit obligation: |  |  |  |  |
Discount rate (1) | 4.20 | % |  | 3.65 | % |  | 4.20 | %
Rate of compensation increase | 3.00 | % |  | 3.00 | % |  | 4.30 | %
Net periodic benefit costs: |  |  |  |  |
Discount rate (1) | 3.65 | % |  | 4.20 | % |  | 3.80 | %
Expected long-term rate of return (2) | 6.50 | % |  | 6.25 | % |  | 7.00 | %
Rate of compensation increase | 3.00 | % |  | 4.30 | % |  | 4.03 | %
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(1) | In determining the discount rate, we use yields on high-quality fixed income investments with payments matched to the estimated distributions of benefits from our plans.
(2) | The expected long-term rate of return is based on a blend of historic returns of equity and debt securities.
Schedule of Net Benefit Costs | The net periodic benefit cost (credit) for the years ended December 31, 2018 and 2017 and the period from July 14, 2016 to December 31, 2016 includes the following components:
| 2018 |  | 2017 |  | 2016
Components of net periodic benefit cost (credit): |  |  |  |  |
Service cost | $ | 548 |  |  | $ | 614 |  |  | $ | 668 |
Interest cost | 1,107 |  |  | 1,192 |  |  | 598 |
Expected return on plan assets | (1,258 | ) |  | (1,189 | ) |  | (686 | )
Plan amendment effect | — |  |  | — |  |  | (3,067 | )
Net periodic benefit cost (credit) | $ | 397 |  |  | $ | 617 |  |  | $ | (2,487 | )
Schedule of Allocation of Plan Assets | The weighted-average asset allocation at December 31, 2018 is as follows:
| Target |  | Actual
Asset category: |  |  |
Equity securities | 54 | % |  | 54 | %
Debt securities | 35 | % |  | 33 | %
Real estate | 11 | % |  | 13 | %
Total | 100 | % |  | 100 | %
Schedule of Expected Benefit Payments | Based on current data and assumptions, the following benefit payments, which reflect expected future service, as appropriate, are expected to be paid over the next 10 years:
Year Ended |  |
2019 |  | $ | 1,140 |
2020 |  | 1,260 |
2021 |  | 1,130 |
2022 |  | 1,200 |
2023 |  | 1,270 |
Thereafter |  | 7,460 |
|  | $ | 13,460 |

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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2439-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=77993564&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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