Intangible Assets |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2018 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Goodwill and Intangible Assets Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intangible Assets | Intangible Assets Intangible assets consist of the following:
Amortization expense was $6.0 million and $18.0 million for the three and nine months ended September 30, 2018 and $6.0 million and $17.9 million for the three and nine months ended September 30, 2017, respectively. The unamortized portion of customer relationships will be expensed over their remaining useful lives, from 18 to 23 years. The weighted-average amortization period as of September 30, 2018 for customer relationships was 21.0 years. |
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