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Multiemployer Pension Plans (Details) - USD ($) $ in Thousands | 5 Months Ended | 7 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2016 | Jul. 19, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Contributions | $ 16,100 | $ 16,700 |  | $ 26,500
Plumbers Pipefitters Local 189, Local Pension Fund [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 31-0894807 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 700 | $ 677
Contributions greater than 5% of total contributions |  |  | Yes |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-19 |
Sheet Metal Workers’ Local Union 24 98 [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 31-6171213 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 550 | $ 380
Contributions greater than 5% of total contributions |  |  | Yes |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Pipefitter Local 537 [Member] |  |  |  |
Operating Location |  |  | MA |
EIN/Pension Plan Number |  |  | 51-6030859 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 778 | $ 1,025
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Aug-17 |
Sheet Metal Local 105 Orange Empire, Sheet Metal Workers Trust Fund [Member] |  |  |  |
Operating Location |  |  | CA |
EIN/Pension Plan Number |  |  | 95-6052257 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 1,383 | $ 911
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jun-20 |
Local 602 Steamfitters [Member] |  |  |  |
Operating Location |  |  | DC |
EIN/Pension Plan Number |  |  | 52-2187219 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 767 | $ 818
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jul-16 |
Sheet Metal Local 80 [Member] |  |  |  |
Operating Location |  |  | MI |
EIN/Pension Plan Number |  |  | 38-6105633 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 1,384 | $ 667
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Steamfitters Local Union No 420 Pension Fund [Member] |  |  |  |
Operating Location |  |  | PA |
EIN/Pension Plan Number |  |  | 23-2004424 |
PPA Zone Status |  |  |  | Red
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 510 | $ 375
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Apr-17 |
Plumbers Pipefitters Local Union No. 333 [Member] |  |  |  |
Operating Location |  |  | MI |
EIN/Pension Plan Number |  |  | 38-3545518 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 645 | $ 523
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Pipefitters Local 636 [Member] |  |  |  |
Operating Location |  |  | MI |
EIN/Pension Plan Number |  |  | 38-3009873 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 739 | $ 374
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-22 |
Pipefitters Local 250, Southern California Pipe Trades [Member] |  |  |  |
Operating Location |  |  | CA |
EIN/Pension Plan Number |  |  | 51-6108443 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 657 | $ 370
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jun-18 |
Plumbers Pipefitters Local 250 National Pension Fund [Member] |  |  |  |
Operating Location |  |  | CA |
EIN/Pension Plan Number |  |  | 52-6152779 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 264 | $ 158
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jun-18 |
Sheet Metal Workers National Benefit Funds [Member] |  |  |  |
Operating Location |  |  | CA |
EIN/Pension Plan Number |  |  | 52-6112463 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 577 | $ 399
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jun-20 |
Sheet Metal Workers Local 24 Dayton National Benefit Funds [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 52-6112463 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 89 | $ 0
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-20 |
Sheet Metal Workers Local 24 National Benefit Funds [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 52-6112463 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 254 | $ 164
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Sheet Metal Workers' National Benefit Funds 1 [Member] |  |  |  |
Operating Location |  |  | PA |
EIN/Pension Plan Number |  |  | 52-6112463 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 247 | $ 215
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jun-19 |
Plumbers Pipefitters Local 5 National Pension Fund [Member] |  |  |  |
Operating Location |  |  | MD |
EIN/Pension Plan Number |  |  | 52-6152779 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 280 | $ 341
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Jul-18 |
Plumbers Local 98 [Member] |  |  |  |
Operating Location |  |  | MI |
EIN/Pension Plan Number |  |  | 38-3031916 |
PPA Zone Status |  |  |  | Red
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 1,517 | $ 284
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-19 |
Plumbers Pipefitters Local 189 National Pension Fund [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 52-6152779 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 238 | $ 182
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-19 |
Local 26 Electricians, Local 26 IBEW NECA Trust Funds [Member] |  |  |  |
Operating Location |  |  | DC |
EIN/Pension Plan Number |  |  | 52-6117917 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 170 | $ 202
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Steamfitters Local 449 Multiple Funds [Member] |  |  |  |
Operating Location |  |  | PA |
EIN/Pension Plan Number |  |  | 25-6032401 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 168 | $ 179
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Plumbers Pipefitters Local 577 [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 31-6134953 |
PPA Zone Status |  |  |  | Red
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 172 | $ 271
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Local ARCA Pipe Refrigeration [Member] |  |  |  |
Operating Location |  |  | CA |
EIN/Pension Plan Number |  |  | 95-6035386 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 99 | $ 140
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Aug-19 |
Local 27 Plumbers [Member] |  |  |  |
Operating Location |  |  | PA |
EIN/Pension Plan Number |  |  | 25-6034928 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 74 | $ 134
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Plumbers Pipefitters Local 354 Combined Funds [Member] |  |  |  |
Operating Location |  |  | PA |
EIN/Pension Plan Number |  |  | 25-6148991 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 107 | $ 91
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-20 |
Sheet Metal Workers Local Union 7 [Member] |  |  |  |
Operating Location |  |  | MI |
EIN/Pension Plan Number |  |  | 38-6234066 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 58 | $ 175
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Apr-20 |
Local 596 Electricians, Local 596 IBEW NECA [Member] |  |  |  |
Operating Location |  |  | WV |
EIN/Pension Plan Number |  |  | 55-0675342 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 12 | $ 128
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-15 |
Plumbers Pipefitters Local 354 National Pension Fund [Member] |  |  |  |
Operating Location |  |  | PA |
EIN/Pension Plan Number |  |  | 52-6152779 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 84 | $ 68
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-20 |
Plumbers Pipefitters Local 537 National Pension Fund [Member] |  |  |  |
Operating Location |  |  | MA |
EIN/Pension Plan Number |  |  | 52-6152779 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 40 | $ 89
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | Aug-17 |
Plumbers Pipefitters Local 577 National Pension Fund [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 52-6152779 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 31 | $ 81
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-18 |
Local 307 [Member] |  |  |  |
Operating Location |  |  | MD |
EIN/Pension Plan Number |  |  | 52-1057284 |
PPA Zone Status |  |  |  | Green
FIP/RP Status |  |  | NA |
Contributions |  |  | $ 105 | $ 212
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-17 |
Sheet Metal Workers Local 24 Dayton [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 31-6171353 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 166 | $ 0
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-20 |
Plumbers Pipefitters Local 162 [Member] |  |  |  |
Operating Location |  |  | OH |
EIN/Pension Plan Number |  |  | 31-6125999 |
PPA Zone Status |  |  |  | Yellow
FIP/RP Status |  |  | Implemented |
Contributions |  |  | $ 65 | $ 2
Contributions greater than 5% of total contributions |  |  | No |
Surcharge Imposed |  |  | NA |
Expiration date of CBA |  |  | May-19 |

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