Risk Management and Use of Derivative Financial Instruments - Foreign Currency Derivatives Details (Details) € in Thousands, £ in Thousands, $ in Thousands	Sep. 30, 2023 EUR (€) derivative	Sep. 30, 2023 USD ($) derivative	Sep. 30, 2023 GBP (£) derivative
Derivative Disclosure
Fair value, foreign currency derivatives		$ 26,636
EUR | Foreign currency collars | Derivatives Not in Cash Flow Hedging Relationships
Derivative Disclosure
Number of Instruments | derivative	1	1	1
Notional Amount | €	€ 8,000
Fair value, foreign currency derivatives		$ 160
EUR | Foreign currency collars | Designated as Cash Flow Hedging Instruments | Derivatives Designated as Hedging Instruments
Derivative Disclosure
Number of Instruments | derivative	63	63	63
Notional Amount | €	€ 280,000
Fair value, foreign currency derivatives		$ 22,936
GBP | Foreign currency collars | Designated as Cash Flow Hedging Instruments | Derivatives Designated as Hedging Instruments
Derivative Disclosure
Number of Instruments | derivative	48	48	48
Notional Amount | £			£ 30,740
Fair value, foreign currency derivatives		$ 3,540