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Subsequent Events (Details)				3 Months Ended		9 Months Ended
	Nov. 02, 2022 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares	Jun. 07, 2019 USD ($) $ / shares	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 $ / shares	Sep. 30, 2022 USD ($) $ / shares	Sep. 30, 2021 $ / shares	Nov. 07, 2022 employee	Nov. 04, 2022 USD ($)	Aug. 31, 2018 USD ($)	Aug. 30, 2018 USD ($)	Aug. 20, 2018 USD ($)
Subsequent Event [Line Items]
Face amount		$ 300,000,000		$ 300,000,000		$ 300,000,000
Conversion rate		65.8762	65.8762
Conversion price (in dollars per share) | $ / shares		$ 15.18	$ 15.18	$ 15.18		$ 15.18
Distributions declared per share (in dollars per share) | $ / shares				$ 0.30	$ 0.30	$ 0.90	$ 0.90
Convertible Notes
Subsequent Event [Line Items]
Face amount			$ 86,250,000							$ 115,000,000	$ 15,000,000	$ 100,000,000
Stated interest rate		5.75%		5.75%		5.75%
Subsequent Event
Subsequent Event [Line Items]
Conversion rate	0.0704225
Conversion price (in dollars per share) | $ / shares	$ 14.20
Distributions declared per share (in dollars per share) | $ / shares	$ 0.32
Subsequent Event | New Mountain Capital
Subsequent Event [Line Items]
Number of professionals | employee								215
Subsequent Event | Convertible Notes
Subsequent Event [Line Items]
Face amount	$ 200,000,000
Stated interest rate	7.50%
Maximum purchase amount									$ 201,250,000
Purchase amount per $1,000 principal amount									$ 1,000

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