SECURITIES HELD TO MATURITY - Additional Information (Detail) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Interest – bearing deposits in other
Schedule Of Held To Maturity Securities [Line Items]
Debt securities, held to maturity, restricted	$ 4,107,705	$ 4,327,429
Collateral Pledged \| Federal Funds Purchased and Securities Sold under Agreements to Repurchase
Schedule Of Held To Maturity Securities [Line Items]
Debt securities, held to maturity, restricted	$ 8,774,302	$ 11,057,973

Amount of restricted investment in debt security measured at amortized cost (held-to-maturity).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(f))
-URI http://asc.fasb.org/extlink&oid=120401367&loc=d3e600178-122990

Name:	us-gaap_HeldToMaturitySecuritiesRestricted
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant