Goodwill - Additional Information (Detail) - USD ($) |
6 Months Ended | ||
---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
|
Goodwill Disclosure [Abstract] | |||
Goodwill | $ 274,202,000 | $ 274,202,000 | |
Impairment charges on goodwill | $ 0 | $ 0 |
X | ||||||||||
- Definition Goodwill Disclosure [Abstract] No definition available.
|
X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|