CREDIT QUALITY ASSESSMENT - Narrative (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Period increase (decrease)	$ 0	$ 0
Other real estate owned	1,034,000	1,034,000
Non-accrual status
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans placed on non-accrual	1,503,000	8,146,000
Restructured Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans restructured during the period	32,000	14,600,000
Individual reserves		500,000
Other real estate owned	$ 1,000,000	$ 1,000,000