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Intangibles | 9 Months Ended
--- | ---
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangibles |
8. | Intangibles
The following table presents Sterling's acquired finite-lived intangible assets at September 30, 2018 and December 31, 2017 (in thousands):
|  |  | September 30, 2018 |  | December 31, 2017
| Weighted Average Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Customer relationships | 23 years |  | $ | 40,823 |  |  | $ | (2,707 | ) |  | $ | 40,823 |  |  | $ | (1,353 | )
Trade name | 13 years |  | 5,307 |  |  | (788 | ) |  | 5,307 |  |  | (394 | )
Noncompetition agreements | 7 years |  | 487 |  |  | (104 | ) |  | 487 |  |  | (52 | )
Total | 22 years |  | $ | 46,617 |  |  | $ | (3,599 | ) |  | $ | 46,617 |  |  | $ | (1,799 | )
Sterling's intangible expense was $0.6 million and $1.8 million for the three and nine months ended September 30, 2018 and $1.8 million for the year ended December 31, 2017.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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