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Segment Information - Summary of Revenue and Income from Operations of Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019
Revenue:
Revenue	$ 2,063,257	$ 1,509,713	$ 1,237,153
Income from operations:
Income from operations	209,459	106,715	60,532
Operating Segments [Member] | Retail Operations [Member]
Revenue:
Revenue	2,043,613	1,509,713	1,237,153
Income from operations:
Income from operations	207,034	$ 106,715	$ 60,532
Operating Segments [Member] | Product Manufacturing [Member]
Revenue:
Revenue	44,000
Income from operations:
Income from operations	6,940
Elimination of Intersegment [Member]
Revenue:
Revenue	(24,356)
Income from operations:
Income from operations	$ (4,515)

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