Borrowings (Tables)

12 Months Ended

Sep. 30, 2022

Debt Disclosure [Abstract]

Schedule of Debt Securitization

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for the 2014 Debt Securitization were as follows:

	Year ended September 30,
	2022		2021		2020
Stated interest expense	$	—	$	—	$	2,498
Amortization of debt issuance costs	—		—		—
Total interest and other debt financing expenses	$	—	$	—	$	2,498
Cash paid for interest expense	$	—	$	—	$	3,298
Average stated interest rate	N/A		N/A		2.8		%
Average outstanding balance	$	—	$	—	$	90,526

For the years ended September 30, 2022, 2021 and 2020 the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for the 2018 Debt Securitization were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	10,542		$	7,598		$	12,616
Amortization of debt issuance costs	421			421			421
Total interest and other debt financing expenses	$	10,963		$	8,019		$	13,037
Cash paid for interest expense	$	8,410		$	7,712		$	14,188
Average stated interest rate	2.6		%	1.9		%	3.1		%
Average outstanding balance	$	408,200		$	408,200		$	408,200

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for the GCIC 2018 Debt Securitization were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	13,422		$	9,889		$	16,854
Accretion of discounts on notes issued	1,789			1,789			1,355
Amortization of debt issuance costs	68			47			—
Total interest and other debt financing expenses	$	15,279		$	11,725		$	18,209
Cash paid for interest expense	$	10,757		$	10,238		$	19,171
Average stated interest rate	2.5		%	1.8		%	3.1		%
Average outstanding balance	$	546,500		$	546,500		$	546,500

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for the 2020 Debt Securitization were as follows:

	Year ended September 30,
	2022		2021			2020
Stated interest expense	$	—	$	4,596		$	505
Amortization of debt issuance costs	—		1,580			74
Total interest and other debt financing expenses	$	—	$	6,176		$	579
Cash paid for interest expense	$	—	$	5,101		$	—
Average stated interest rate	N/A		2.7		%	2.7		%
Average outstanding balance	$	—	$	170,359		$	18,590

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for the SBA debentures were as follows:

	Year ended September 30,
	2022		2021			2020
Stated interest expense	$	—	$	3,851		$	9,075
Amortization of debt issuance costs	—		4,621			1,218
Total interest and other debt financing expenses	$	—	$	8,472		$	10,293
Cash paid for interest expense	$	—	$	4,396		$	9,237
Average stated interest rate	N/A		2.7		%	3.1		%
Average outstanding balance	$	—	$	143,179		$	289,003

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the MS Credit Facility II were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	702		$	3,000		$	11,018
Facility fees	529			262			551
Amortization of debt issuance costs	535			493			1,821
Total interest and other debt financing expenses	$	1,766		$	3,755		$	13,390
Cash paid for interest expense and facility fees	$	1,421		$	5,034		$	11,567
Average stated interest rate	4.0		%	2.7		%	3.1		%
Average outstanding balance	$	17,452		$	112,375		$	350,846

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the WF Credit Facility were as follows:

	Year ended September 30,
	2022		2021			2020
Stated interest expense	$	—	$	996		$	6,851
Facility fees	—		323			371
Total interest and other debt financing expenses	$	—	$	1,319		$	7,222
Cash paid for interest expense and facility fees	$	—	$	1,614		$	7,533
Average stated interest rate	N/A		2.2		%	3.0		%
Average outstanding balance	$	—	$	45,050		$	228,100

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the DB Credit Facility were as follows:

	Year ended September 30,
	2022		2021			2020
Stated interest expense	$	—	$	73		$	6,554
Facility fees	—		14			586
Total interest and other debt financing expenses	$	—	$	87		$	7,140
Cash paid for interest expense and facility fees	$	—	$	840		$	8,258
Average stated interest rate	N/A		2.2		%	3.2		%
Average outstanding balance	$	—	$	3,256		$	205,373

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the JPM Credit Facility were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	13,876		$	1,200		$	—
Facility fees	2,501			958			—
Amortization of debt issuance costs	1,865			710			—
Total interest and other debt financing expenses	$	18,242		$	2,868		$	—
Cash paid for interest expense and facility fees	$	14,948		$	1,593		$	—
Average stated interest rate	2.6		%	2.0		%	N/A
Average outstanding balance	$	524,105		$	59,612		$	—

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the SLF Credit Facility were as follows:

	Year ended September 30,
	2022		2021		2020
Stated interest expense	$	—	$	—	$	445
Cash paid for interest expense	—		—		445
Average stated interest rate	N/A		N/A		3.1		%
Average outstanding balance	$	—	$	—	$	14,542

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest

and facility fees, average interest rates and average outstanding balances for the GCIC SLF Credit Facility were as

follows:

	Year ended September 30,
	2022		2021		2020
Stated interest expense	$	—	$	—	$	480
Cash paid for interest expense	—		—		487
Average stated interest rate	N/A		N/A		3.0		%
Average outstanding balance	$	—	$	—	$	15,896

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the 2024 Notes were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	16,745		$	13,463		$	—
Accretion of discounts and amortization of premiums on notes issued	(1,327)			90			—
Amortization of debt issuance costs	1,932			1,583			—
Total interest and other debt financing expenses	$	17,350		$	15,136		$	—
Cash paid for interest expense	$	15,188		$	7,238		$	—
Average stated interest rate	3.4		%	3.4		%	N/A
Average outstanding balance	$	496,164		$	398,904		$	—

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the 2026 Notes were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	14,833		$	6,028		$	—
Accretion of discounts on notes issued	520			132			—
Amortization of debt issuance costs	1,588			595			—
Total interest and other debt financing expenses	$	16,941		$	6,755		$	—
Cash paid for interest expense	$	14,319		$	5,000		$	—
Average stated interest rate	2.5		%	2.5		%	N/A
Average outstanding balance	$	593,425		$	240,000		$	—

For the years ended September 30, 2022, 2021 2020, the components of interest expense, cash paid for interest and facility fees, average interest rates and average outstanding balances for the 2027 Notes were as follows:

	Year ended September 30,
	2022			2021			2020
Stated interest expense	$	7,176		$	1,156		$	—
Accretion of discounts on notes issued	733			118			—
Amortization of debt issuance costs	928			153			—
Total interest and other debt financing expenses	$	8,837		$	1,427		$	—
Cash paid for interest expense	$	7,415		$	—		$	—
Average stated interest rate	2.1		%	2.0		%	N/A
Average outstanding balance	$	350,000		$	56,575		$	—

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for the Adviser Revolver were as follows:

	Year ended September 30,
	2022		2021		2020
Stated interest expense	$	—	$	—	$	33
Cash paid for interest expense	—		—		42
Average stated interest rate	N/A		N/A		1.3		%
Average outstanding balance	$	—	$	—	$	2,594

For the years ended September 30, 2022, 2021 and 2020, the components of interest expense, cash paid for interest, average interest rates and average outstanding balances for short term borrowings were as follows:

	Year ended September 30,
	2022		2021		2020
Stated interest expense	$	—	$	—	$	1,533
Cash paid for interest expense	—		—		1,533
Average stated interest rate	N/A		N/A		5.0		%
Average outstanding balance	$	—	$	—	$	30,780

Interest Rate and Interest Differential Analysis

As of September 30, 2022, the classes, amounts, ratings and interest rates (expressed as a spread to three-month LIBOR) of the Class A, B and C-1 2018 Notes are as follows:

Description	Class A 2018 Notes	Class B 2018 Notes	Class C-1 2018 Notes
Type	Senior Secured Floating Rate	Senior Secured Floating Rate	Senior Secured Floating Rate
Amount Outstanding	$327,000	$61,200	$20,000
Fitch Rating	“AAA”	“NR”	“NR”
S&P Rating	“AAA”	“AA”	“A”
Interest Rate	LIBOR + 1.48%	LIBOR + 2.10%	LIBOR + 2.80%

As of September 30, 2022, the classes, amounts, ratings and interest rates (expressed as a spread to three-month LIBOR, as applicable) of the Class A-1 GCIC 2018 Notes, Class A-2 GCIC 2018 Notes, and Class B-1 GCIC 2018 Notes were as follows:

Description	Class A-1 GCIC 2018 Notes	Class A-2-R GCIC 2018 Notes	Class B-1 GCIC 2018 Notes
Type	Senior Secured Floating Rate	Senior Secured Fixed Rate	Senior Secured Floating Rate
Amount Outstanding	$490,000	$38,500	$18,000
Fitch’s Rating	"AAA"	"NR"	"NR"
S&P Rating	"AAA"	"AAA"	"AA"
Interest Rate	LIBOR + 1.48%	2.50%	LIBOR + 2.25%

Schedule of Maturities of Long-Term Debt

A summary of the Company’s maturity requirements for borrowings as of September 30, 2022 is as follows:

	Payments Due by Period
	Total		Less Than 1 Year		1 – 3 Years		3 – 5 Years		More Than 5 Years
2018 Debt Securitization	$	408,200	$	—	$	—	$	—	$	408,200
2018 GCIC Debt Securitization(1)	545,956		—		—		—		545,956
JPM Credit Facility	692,592		—		—		692,592		—
2024 Notes(2)	502,131		—		502,131		—		—
2026 Notes(2)	597,930		—		—		597,930		—
2027 Notes(2)	346,794		—		—		346,794		—
Total borrowings	$	3,093,603	$	—	$	502,131	$	1,637,316	$	954,156

(1) Represents principal outstanding less unaccreted discount recognized on the assumption of the 2018 GCIC Debt Securitization in the Merger.

(2) Represents principal outstanding plus unamortized premium and / or unaccreted original issue discount.