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v3.20.1

Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2020
Goodwill and Intangible Assets [Abstract] |
Changes in Carrying Amount of Goodwill |
|  |  |  |  |  |  | Specialty |  |  |
(in thousands) | Civil |  |  | Building |  | Contractors |  | Total
Gross goodwill | $ | 492,074 |  | $ | 424,724 |  | $ | 156,193 |  | $ | 1,072,991
Accumulated impairment |  | (286,931) |  |  | (424,724) |  |  | (156,193) |  |  | (867,848)
Balance as of December 31, 2019 |  | 205,143 |  |  | — |  |  | — |  |  | 205,143
Current year activity |  | — |  |  | — |  |  | — |  |  | —
Balance as of March 31, 2020 | $ | 205,143 |  | $ | — |  | $ | — |  | $ | 205,143
Intangible Assets |
| As of March 31, 2020 |  | Weighted
|  |  |  |  |  |  | Accumulated |  |  |  |  | Average
|  |  |  |  | Accumulated |  | Impairment |  | Carrying |  | Amortization
(in thousands) | Cost |  |  | Amortization |  | Charge |  | Value |  | Period
Trade names (non-amortizable) | $ | 117,600 |  | $ | — |  | $ | (67,190) |  | $ | 50,410 |  | Indefinite
Trade names (amortizable) |  | 74,350 |  |  | (21,889) |  |  | (23,232) |  |  | 29,229 |  | 20 years
Contractor license |  | 6,000 |  |  | — |  |  | (6,000) |  |  | — |  | N/A
Customer relationships |  | 39,800 |  |  | (21,311) |  |  | (16,645) |  |  | 1,844 |  | 12 years
Construction contract backlog |  | 149,290 |  |  | (81,315) |  |  | — |  |  | 67,975 |  | 3 years
Total | $ | 387,040 |  | $ | (124,515) |  | $ | (113,067) |  | $ | 149,458 |  |  |
| As of December 31, 2019 |  | Weighted
|  |  |  |  |  |  | Accumulated |  |  |  |  | Average
|  |  |  |  | Accumulated |  | Impairment |  | Carrying |  | Amortization
(in thousands) | Cost |  |  | Amortization |  | Charge |  | Value |  | Period
Trade names (non-amortizable) | $ | 117,600 |  | $ | — |  | $ | (67,190) |  | $ | 50,410 |  | Indefinite
Trade names (amortizable) |  | 74,350 |  |  | (21,267) |  |  | (23,232) |  |  | 29,851 |  | 20 years
Contractor license |  | 6,000 |  |  | — |  |  | (6,000) |  |  | — |  | N/A
Customer relationships |  | 39,800 |  |  | (21,048) |  |  | (16,645) |  |  | 2,107 |  | 12 years
Construction contract backlog |  | 149,290 |  |  | (76,388) |  |  | — |  |  | 72,902 |  | 3 years
Total | $ | 387,040 |  | $ | (118,703) |  | $ | (113,067) |  | $ | 155,270 |  |  |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with finite and infinite lives, by either major class or business segment. + References No definition available. + Details
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- References No definition available. + Details
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- 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
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