Impairment of Long-Lived Assets - Additional Information (Detail) - USD ($) |
3 Months Ended | 9 Months Ended | |||
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Sep. 30, 2018 |
Sep. 30, 2017 |
Mar. 31, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
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| Impairment Of Long Lived Assets [Line Items] | |||||
| Impairment of long-lived assets | $ 0 | ||||
| Amortization of intangibles | $ 1,600,000 | $ 1,100,000 | $ 4,600,000 | $ 3,400,000 | |
| Adjustment To Fully Amortized Assets [Member] | |||||
| Impairment Of Long Lived Assets [Line Items] | |||||
| Impairment charges land held for sale | $ 1,900,000 | ||||
| Amortization of intangibles | $ 1,900,000 | ||||
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- Definition Impairment Of Long Lived Assets [Line Items] No definition available.
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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