|9 Months Ended|
Sep. 30, 2018
|Goodwill and Intangible Assets Disclosure [Abstract]|
The carrying amounts of intangible assets subject to amortization are included in other long-term assets in the consolidated balance sheets.
Intangible assets consisted of the following (in thousands, except amortization period):
The following table sets forth the aggregate amortization of intangible assets for the periods presented (in thousands):
The following table sets forth the estimated annual aggregate amortization of intangible assets for the periods presented (in thousands):
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef