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Borrowings - Summary of 2018-2 Secured Notes (Details) - USD ($)
$ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2022

Dec. 31, 2021

Debt Instrument [Line Items]

Amortized Carrying Value

$ 363,802

$ 347,191

2018-2 Secured Notes Class A-1R-R Notes

Debt Instrument [Line Items]

Amortized Carrying Value

11,487

11,487

Outstanding Principal at Par

$ 11,580

$ 11,580

Rating

AAA(sf)

^[1]

AAA(sf)

^[2]

Stated Maturity

Nov. 20, 2029

^[3]

Nov. 20, 2029

^[4]

2018-2 Secured Notes Class A-1T-R Notes

Debt Instrument [Line Items]

Amortized Carrying Value

$ 78,322

$ 78,189

Outstanding Principal at Par

$ 78,933

$ 78,933

Rating

AAA(sf)

^[1]

AAA(sf)

^[2]

Stated Maturity

Nov. 20, 2029

^[3]

Nov. 20, 2029

^[4]

2018-2 Secured Notes Class A-2-R Notes

Debt Instrument [Line Items]

Amortized Carrying Value

$ 54,681

$ 54,681

Outstanding Principal at Par

$ 55,100

$ 55,100

Rating

AA (sf)

^[1]

AA (sf)

^[2]

Stated Maturity

Nov. 20, 2029

^[3]

Nov. 20, 2029

^[4]

2018-2 Secured Notes Class B-R Notes

Debt Instrument [Line Items]

Amortized Carrying Value

$ 18,103

$ 18,103

Outstanding Principal at Par

$ 18,250

$ 18,250

Rating

A (sf)

^[1]

A (sf)

^[2]

Stated Maturity

Nov. 20, 2029

^[3]

Nov. 20, 2029

^[4]

2018-2 Secured Notes

Debt Instrument [Line Items]

Amortized Carrying Value

$ 162,593

$ 162,460

Outstanding Principal at Par

$ 163,863

$ 163,863

LIBOR | 2018-2 Secured Notes Class A-1R-R Notes

Debt Instrument [Line Items]

Spread

1.58%

^[5]

1.58%

^[6]

LIBOR | 2018-2 Secured Notes Class A-1T-R Notes

Debt Instrument [Line Items]

Spread

1.58%

1.58%

LIBOR | 2018-2 Secured Notes Class A-2-R Notes

Debt Instrument [Line Items]

Spread

2.45%

2.45%

LIBOR | 2018-2 Secured Notes Class B-R Notes

Debt Instrument [Line Items]

Spread

3.17%

3.17%

[1]	Represents ratings from each of S&P and DBRS for the Class A-1R-R Notes and the Class A-1T-R Notes and from S&P for the Class A-2-R Notes and Class B-R Notes as of the closing of the CLO on October 18, 2018.
[2]	Represents ratings from each of S&P and DBRS for the Class A-1R-R Notes and the Class A-1T-R Notes and from S&P for the Class A-2-R Notes and Class B-R Notes as of the closing of the CLO on October 18, 2018.
[3]	The indenture governing our CLO permits the repricing or refinancing of the secured notes after November 20, 2020, which may result in the redemption of the outstanding notes occurring prior to their stated maturity.
[4]	The indenture governing our CLO permits the repricing or refinancing of the secured notes after November 20, 2020, which may result in the redemption of the outstanding notes occurring prior to their stated maturity.
[5]	Interest may be indexed to either the CP Rate (as defined in the governing indenture) or three-month USD LIBOR.
[6]	Interest may be indexed to either the CP Rate (as defined in the governing indenture) or three-month USD LIBOR.

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