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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract] |
Summary of Plan Information Relating to Participation in Multi-Employer Pension Plans | Information has been presented separately for individually significant plans and in the aggregate for all other plans.
|  | Employee Identification Number/ Pension Plan Number |  |  | PPA Zone Status |  |  | Subject to Financial Improve- ment/ Reha- bilitation Plan |  |  | Contributions (in thousands) |  |  | Sur- charge Imposed |  |  | Expiration Date of Collective Bargaining Agreement
Fund |  |  | 2013 |  |  | 2012 |  |  |  | 2013 |  |  | 2012 |  |  | 2011 |  |  |
National Electrical Benefit Fund |  |  | 53-0181657-001 |  |  |  | Green |  |  |  | Green |  |  |  | No |  |  | $ | 17,268 |  |  | $ | 18,509 |  |  | $ | 9,704 |  |  |  | No |  |  | Varies through May 2017
Laborers National Pension Fund |  |  | 75-1280827-001 |  |  |  | Green |  |  |  | Green |  |  |  | No |  |  |  | 4,681 |  |  |  | 1,906 |  |  |  | 1,903 |  |  |  | No |  |  | May 2014
Pipeline Industry Pension Fund |  |  | 73-6146433-001 |  |  |  | Green |  |  |  | Green |  |  |  | No |  |  |  | 4,511 |  |  |  | 7,434 |  |  |  | 101 |  |  |  | No |  |  | Varies through May 2014
Central Pension Fund of the IUOE & Participating Employers |  |  | 36-6052390-001 |  |  |  | Green |  |  |  | Green |  |  |  | No |  |  |  | 4,259 |  |  |  | 6,843 |  |  |  | 4,439 |  |  |  | No |  |  | May 2014
Eighth District Electrical Pension Fund |  |  | 84-6100393-001 |  |  |  | Green |  |  |  | Green |  |  |  | No |  |  |  | 1,790 |  |  |  | 4,415 |  |  |  | 3,533 |  |  |  | No |  |  | Varies through August 2016
Operating Engineers Local 324 Pension Fund |  |  | 38-1900637-001 |  |  |  | Red |  |  |  | Red |  |  |  | Yes |  |  |  | 818 |  |  |  | 135 |  |  |  | — |  |  |  | Yes |  |  | Varies through April 2018
Joint Pension Local Union 164 IBEW |  |  | 22-6031199-001 |  |  |  | Yellow |  |  |  | Yellow |  |  |  | Yes |  |  |  | 222 |  |  |  | 515 |  |  |  | 2,887 |  |  |  | No |  |  | May 2014
NECA-IBEW Pension Trust |  |  | 51-6029903-001 |  |  |  | Green |  |  |  | Green |  |  |  | No |  |  |  | 7 |  |  |  | 19 |  |  |  | 6,707 |  |  |  | No |  |  | May 2014
IBEW Local 246 Pension Plan |  |  | 34-6582842-001 |  |  |  | Yellow |  |  |  | Yellow |  |  |  | No |  |  |  | — |  |  |  | 130 |  |  |  | 1,977 |  |  |  | No |  |  | October 2012
Central States, Southeast, and Southwest Areas Pension Plan |  |  | 36-6044243-001 |  |  |  | Red |  |  |  | Red |  |  |  | Yes |  |  |  | — |  |  |  | 22 |  |  |  | 540 |  |  |  | Yes |  |  | (1)
All other plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 21,498 |  |  |  | 23,644 |  |  |  | 13,411 |  |  |  |  |  |  |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 55,054 |  |  | $ | 63,572 |  |  | $ | 45,202 |  |  |  |  |  |  |
(1) | Quanta effected a complete withdrawal from the Central States, Southeast, and Southwest Areas Pension Plan as of December 31, 2012.
Quanta’s contributions to the following plans were five percent or more of the total contributions to these plans for the periods indicated based on the Forms 5500 for these plans. Forms 5500 were not yet available for these plans for the year ended December 31, 2013.
Pension Fund |  | Plan Years in which Quanta Contributions Were Five Percent or More of Total Plan Contributions
Pipeline Industry Pension Fund |  | 2012
IBEW Local 246 Pension Plan |  | 2012 and 2011
Eighth District Electrical Pension Fund |  | 2012 and 2011
NECA — IBEW Pension Trust |  | 2011
Joint Pension Local Union 164 IBEW |  | 2011

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -URI http://asc.fasb.org/subtopic&trid=2235144 + Details
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