XML 51 R37.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Goodwill and Intangible Assets (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Goodwill and Intangible Assets |
Schedule of goodwill by reporting unit | The change in goodwill by segment for 2018 and 2017 was as follows (in thousands):
|  | Power |  | Pipeline |  | Utilities |  | Transmission |  | Civil |  | Total |
Balance at January 1, 2017 |  | $ | 24,512 |  | $ | 42,252 |  | $ | 20,312 |  | $ | — |  | $ | 40,150 |  | $ | 127,226 |
Goodwill acquired during the year |  |  | — |  |  | 9,269 |  |  | 17,000 |  |  | — |  |  | — |  |  | 26,269 |
Purchase price allocation adjustments |  |  | (121) |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (121) |
Balance at January 1, 2018 |  | $ | 24,391 |  | $ | 51,521 |  | $ | 37,312 |  | $ | — |  | $ | 40,150 |  | $ | 153,374 |
Goodwill acquired during the year |  |  | 1,542 |  |  | 764 |  |  | — |  |  | 50,479 |  |  | — |  |  | 52,785 |
Balance at December 31, 2018 |  | $ | 25,933 |  | $ | 52,285 |  | $ | 37,312 |  | $ | 50,479 |  | $ | 40,150 |  | $ | 206,159 |
Summary of intangible asset categories, amounts and the average amortization periods | The table below summarizes the intangible asset categories, amounts and the average amortization periods, which are generally on a straight-line basis (in thousands):
|  |  |  | December 31, 2018 |  | December 31, 2017 |
|  | Weighted Average Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Intangible assets, net |  | Gross Carrying Amount |  | Accumulated Amortization |  | Intangible assets, net |
Tradename |  | 9 years |  | $ | 31,390 |  | $ | (25,156) |  | $ | 6,234 |  | $ | 32,175 |  | $ | (22,238) |  | $ | 9,937 |
Customer relationships |  | 16 years |  |  | 97,400 |  |  | (23,079) |  |  | 74,321 |  |  | 49,900 |  |  | (16,338) |  |  | 33,562 |
Non-compete agreements |  | 5 years |  |  | 1,900 |  |  | (1,387) |  |  | 513 |  |  | 1,900 |  |  | (820) |  |  | 1,080 |
Other |  | 3 years |  |  | 275 |  |  | (145) |  |  | 130 |  |  | 275 |  |  | (54) |  |  | 221 |
Total |  | 15 years |  | $ | 130,965 |  | $ | (49,767) |  | $ | 81,198 |  | $ | 84,250 |  | $ | (39,450) |  | $ | 44,800 |
Schedule of estimated future amortization expense for intangible assets | In the second quarter of 2017, we recorded a $0.5 million impairment charge related to a tradename intangible asset in our Pipeline segment. The impairment charge is included in “Selling, general and administrative expenses” in the Consolidated Statements of Income. Estimated future amortization expense for intangible assets as of December 31, 2018 is as follows (in thousands):
|  | Estimated |
|  | Intangible |
|  | Amortization |
For the Years Ending December 31, |  | Expense |
2019 |  | $ | 11,559 |
2020 |  |  | 8,814 |
2021 |  |  | 7,577 |
2022 |  |  | 6,416 |
2023 |  |  | 5,394 |
Thereafter |  |  | 41,438 |
|  | $ | 81,198 |

X
- Definition Tabular presentation of goodwill by reporting unit. + References No definition available. + Details
Name: | prim_ScheduleOfGoodwillByReportingUnitTableTextBlock
Namespace Prefix: | prim_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
Name: | us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
Name: | us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration