Amount of expense related to estimated loss from loan and lease transactions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

Name:	us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Mortgage Revenue Bonds - Additional Information (Details) - USD ($)	1 Months Ended	9 Months Ended
	Jul. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Schedule Of Available For Sale Securities [Line Items]
Redemption of contingent interest income	$ 1,800,000
Provision for credit loss			$ 900,080
Mortgage Revenue Bond [Member]
Schedule Of Available For Sale Securities [Line Items]
Carrying value, inclusive of accrued interest		$ 4,600,000
Provision Center 2014-1 [Member]
Schedule Of Available For Sale Securities [Line Items]
Provision for credit loss			$ 900,000
Rosewood Townhomes and South Pointe Apartments [Member] \| Series A MRB [Member]
Schedule Of Available For Sale Securities [Line Items]
Redemption price	106.00%