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DEBT - September Note Purchase Agreement, Schedule of Debt (Details) - Unsecured Debt - USD ($)	Sep. 30, 2021	Jan. 31, 2021
Series A
Line of Credit Facility [Line Items]
Debt instrument face amount		$ 75,000,000
Unsecured loan, fixed rate		3.84%
Series B
Line of Credit Facility [Line Items]
Debt instrument face amount		$ 50,000,000
Unsecured loan, fixed rate		3.69%
Series C
Line of Credit Facility [Line Items]
Debt instrument face amount		$ 50,000,000
Unsecured loan, fixed rate		2.70%
Series 2021-A
Line of Credit Facility [Line Items]
Debt instrument face amount	$ 35,000,000
Unsecured loan, fixed rate	2.50%
Series 2021-B
Line of Credit Facility [Line Items]
Debt instrument face amount	$ 50,000,000
Unsecured loan, fixed rate	2.62%
Series 2021-C
Line of Credit Facility [Line Items]
Debt instrument face amount	$ 25,000,000
Unsecured loan, fixed rate	2.68%
Series 2021-D
Line of Credit Facility [Line Items]
Debt instrument face amount	$ 15,000,000
Unsecured loan, fixed rate	2.78%

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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