Acquisitions - Togo Group (Details) - USD ($) $ in Thousands			2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
	Aug. 01, 2020	Mar. 23, 2020	Mar. 23, 2020	Apr. 30, 2019	Mar. 23, 2020	Apr. 30, 2020	Apr. 30, 2019
Business Combinations [Abstract]
Payments to acquire interest in joint venture						$ 0	$ 5,250
Business Acquisition [Line Items]
Payments to acquire interest in joint venture						$ 0	5,250
Togo Group
Business Acquisition [Line Items]
Ownership percentage after all transactions		73.50%
Equity, fair value disclosure		$ 47,256	$ 47,256		$ 47,256
Preferred stock, dividend rate, percentage		3.00%
Preferred stock, liquidation preference		$ 20,180	20,180		20,180
Call option expiration period		4 years
Acquired finite-lived intangible assets, weighted average useful life		8 years
Losses from investment			$ 2,137	$ 2,285	$ 6,884		$ 5,984
Togo Group | Subsequent Event
Business Combinations [Abstract]
Payments to acquire interest in joint venture	$ 6,000
Business Acquisition [Line Items]
Payments to acquire interest in joint venture	$ 6,000