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Multiemployer Plans (Tables) | 12 Months Ended
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Dec. 31, 2018
Retirement Benefits [Abstract] |
Schedule of Multiemployer Plans [Table Text Block] |
| EIN/Pension Plan Number | Pension Protection Act Zone Status | FIP/RP Status Pending/Implemented | Contributions | Surcharge Imposed | Expiration Date of Collective Bargaining Agreement |
Pension Fund | 2018 |  | 2017 |  | 2018 |  | 2017 |  | 2016 |  |
|  |  |  |  | (In thousands) |  |  |
Alaska Laborers-Employers Retirement Fund | 91-6028298-001 | Yellow as of 6/30/2018 | Yellow as of 6/30/2017 | Implemented | $ | 732 |  | $ | 690 |  | $ | 766 |  | No | 12/31/2018 | *
Construction Industry and Laborers Joint Pension Trust for So Nevada, Plan A | 88-0135695-001 | Red | Red | Implemented | 346 |  | 377 |  | 523 |  | No | 6/30/2019 |
Edison Pension Plan | 93-6061681-001 | Green | Green | No | 12,111 |  | 12,725 |  | 6,242 |  | No | 6/30/2019 |
IBEW Local 212 Pension Trust | 31-6127280-001 | Green as of 4/30/2018 | Green as of 4/30/2017 | No | 1,341 |  | 1,312 |  | 1,146 |  | No | 6/2/2019 |
IBEW Local 357 Pension Plan A | 88-6023284-001 | Green | Green | No | 3,460 |  | 3,286 |  | 3,016 |  | No | 5/31/2021 |
IBEW Local 648 Pension Plan | 31-6134845-001 | Yellow as of 2/28/2018 | Red as of 2/28/2017 | Implemented | 2,175 |  | 2,254 |  | 773 |  | No | 8/29/2021 |
IBEW Local 82 Pension Plan | 31-6127268-001 | Green as of 6/30/2018 | Green as of 6/30/2017 | No | 1,569 |  | 1,757 |  | 2,560 |  | No | 12/1/2019 |
Idaho Plumbers and Pipefitters Pension Plan | 82-6010346-001 | Green as of 5/31/2018 | Green as of 5/31/2017 | No | 1,247 |  | 1,156 |  | 1,221 |  | No | 9/30/2019 |
Minnesota Teamsters Construction Division Pension Fund | 41-6187751-001 | Green as of 11/30/2017 | Green as of 11/30/2016 | No | 740 |  | 826 |  | 690 |  | No | 4/30/2019 |
National Automatic Sprinkler Industry Pension Fund | 52-6054620-001 | Red | Red | Implemented | 738 |  | 718 |  | 775 |  | No | 3/31/2021- 7/31/2024 |
National Electrical Benefit Fund | 53-0181657-001 | Green | Green | No | 8,468 |  | 8,891 |  | 6,366 |  | No | 1/31/2018- 5/31/2022 |
Pension Trust Fund for Operating Engineers | 94-6090764-001 | Yellow | Red | Implemented | 2,403 |  | 2,391 |  | 2,069 |  | No | 6/15/2019- 6/30/2020 |
Sheet Metal Workers Pension Plan of Southern CA, AZ, and NV | 95-6052257-001 | Yellow | Yellow | Implemented | 1,774 |  | 1,016 |  | 1,087 |  | No | 6/30/2019 |
Southwest Marine Pension Trust | 95-6123404-001 | Red | Red | Implemented | 81 |  | 48 |  | 50 |  | No | 1/31/2019 | *
Other funds |  |  |  |  | 21,537 |  | 19,298 |  | 17,243 |  |  |  |
Total contributions | $ | 58,722 |  | $ | 56,745 |  | $ | 44,527 |  |  |  |
* | Plan includes contributions required by collective bargaining agreements which have expired, but contain provisions automatically renewing their terms in the absence of a subsequent negotiated agreement.
The Company was listed in the plans' Forms 5500 as providing more than 5 percent of the total contributions for the following plans and plan years:
Pension Fund | Year Contributions to Plan Exceeded More Than 5 Percent of Total Contributions (as of December 31 of the Plan's Year-End)
Edison Pension Plan | 2017 and 2016
IBEW Local 82 Pension Plan | 2017 and 2016
IBEW Local 124 Pension Trust Fund | 2017 and 2016
IBEW Local 212 Pension Trust Fund | 2017 and 2016
IBEW Local 357 Pension Plan A | 2017 and 2016
IBEW Local 648 Pension Plan | 2017 and 2016
Idaho Plumbers and Pipefitters Pension Plan | 2017 and 2016
International Union of Operating Engineers Local 701 Pension Trust Fund | 2017 and 2016
Minnesota Teamsters Construction Division Pension Fund | 2017 and 2016
Pension and Retirement Plan of Plumbers and Pipefitters Local 525 | 2017 and 2016

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- Definition Tabular disclosure of the quantitative and qualitative information related to multiemployer plans in which the employer participates. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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