Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Principles of Consolidation and Recent Events (Details)

v3.22.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Principles of Consolidation and Recent Events (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
Loan
Branch
Dec. 31, 2021
USD ($)
Loan
Dec. 31, 2020
USD ($)
Loan
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]      
Number of full service branch offices | Branch 26    
Interest-Only Modifications [Member]      
Recent Events [Abstract]      
Aggregate number of loan modifications made by other than troubled debt restructurings | Loan 726    
Aggregate amount of loan modifications made by other than troubled debt restructurings, aggregate principal balances $ 337,200,000    
PPP Loans [Member]      
Recent Events [Abstract]      
Number of loans originated | Loan 175 1,000 1,738
Loans originated $ 35,500,000 $ 128,100,000 $ 346,700,000
Fees generated for loans originated $ 1,000,000.0 $ 5,600,000 $ 10,000,000.0
Number of loans forgiven | Loan   1,722 765
Loans forgiven   $ 318,400,000 $ 113,500,000
Net fees recognized for loans forgiven   $ 8,300,000 $ 5,400,000
Number of loans outstanding | Loan 70    
Loans outstanding $ 7,700,000    
Net fees unrecognized for loans $ 281,000    
PPP Loans [Member] | Minimum [Member]      
Recent Events [Abstract]      
Contractual period 24 months    
PPP Loans [Member] | Maximum [Member]      
Recent Events [Abstract]      
Contractual period 60 months