Joint Ventures and Variable Interest Entities - Equity in Earnings (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financial Information
Equity in earnings of joint ventures	$ 7,950	$ 8,201
Unconsolidated Joint Ventures
Financial Information
Equity in earnings of joint ventures	7,900	8,200
Unconsolidated Joint Ventures \| Pass through joint ventures
Financial Information
Equity in earnings of joint ventures	6,800	4,400
Unconsolidated Joint Ventures \| Other joint ventures
Financial Information
Equity in earnings of joint ventures	$ 1,100	$ 3,800

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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