Goodwill - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2019
Goodwill, Impairment Loss			$ 556,056
Retail [Member] \| Operating Segments [Member]
Goodwill, Impairment Loss	$ 271,500	$ 224,100
Wholesale [Member] \| Operating Segments [Member]
Goodwill, Impairment Loss	$ 25,400	$ 35,000

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
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