XML 32 R27.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Goodwill and Identifiable Intangible Assets, Net (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Goodwill and Identifiable Intangible Assets, Net |
Schedule of changes in the carrying amount of goodwill | The changes in the carrying amount of goodwill are as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Mechanical Services | ​ | Electrical Services | ​ | ​
​ |  | Segment |  | Segment | ​ | Total
Balance at December 31, 2017 | ​ | $ | 200,584 | ​ | $ | — | ​ | $ | 200,584
Acquisitions and purchase price adjustments (See Note 4) | ​ |  | 34,598 | ​ |  | — | ​ | ​ | 34,598
Impairment adjustment | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Balance at December 31, 2018 | ​ | ​ | 235,182 | ​ | ​ | — | ​ | ​ | 235,182
Acquisitions and purchase price adjustments (See Note 4) | ​ | ​ | 579 | ​ | ​ | 96,686 | ​ | ​ | 97,265
Impact of segment reorganization | ​ | ​ | (1,101) | ​ | ​ | 1,101 | ​ | ​ | —
Impairment adjustment | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Balance at December 31, 2019 | ​ | $ | 234,660 | ​ | $ | 97,787 | ​ | $ | 332,447
Schedule of components of identifiable intangible assets | Identifiable intangible assets consist of the following (dollars in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | December 31,
​ | ​ | Estimated | ​ | 2019 | ​ | 2018
​ |  | Useful Lives |  | Gross Book |  | Accumulated |  | Gross Book |  | Accumulated
​ |  | in Years |  | Value |  | Amortization |  | Value |  | Amortization
Customer relationships |  | 1 - 15 | ​ | $ | 183,061 | ​ | $ | (80,813) | ​ | $ | 128,480 | ​ | $ | (60,731)
Backlog |  | 1 - 2 | ​ |  | 7,400 | ​ |  | (6,388) | ​ |  | 9,100 | ​ |  | (8,260)
Tradenames |  | 2 - 25 | ​ |  | 71,995 | ​ |  | (15,281) | ​ |  | 39,395 | ​ |  | (12,709)
Total | ​ | ​ | ​ | $ | 262,456 | ​ | $ | (102,482) | ​ | $ | 176,975 | ​ | $ | (81,700)
​
Schedule of future amortization expense of identifiable intangible assets | At December 31, 2019, future amortization expense of identifiable intangible assets is as follows (in thousands):
​ | ​ | ​ | ​ | ​
Year ended December 31— |  | ​ |  | ​
2020 |  | $ | 23,246 |
2021 | ​ |  | 19,191 | ​
2022 | ​ |  | 16,545 | ​
2023 | ​ |  | 15,082 | ​
2024 | ​ |  | 13,732 | ​
Thereafter | ​ |  | 72,178 | ​
Total | ​ | $ | 159,974 | ​

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 goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
Name: | us-gaap_ScheduleOfGoodwillTextBlock
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