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LOANS - Additional Information (Detail)
3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
Loan
Mar. 31, 2021
Loan
Jun. 30, 2021
USD ($)
Application
Dec. 31, 2020
USD ($)
Application
Dec. 31, 2021
USD ($)
Loan
Financing Receivable, Past Due [Line Items]          
Loans receivable from related parties $ 563,669       $ 577,143
Deferred loan fees 1,353,820       1,249,233
Fair value of PCI loans 5,142,148       5,565,827
Loan receivable outstanding balance 566,580,015       572,362,843
Impaired Financing Receivable, with Related Allowance, Recorded Investment 173,925       174,776
Amount of allowance for loan losses allocated 35,859       35,859
Gibraltar Bank          
Financing Receivable, Past Due [Line Items]          
Fair value of PCI loans 5,700,000        
Commercial Portfolio Segment          
Financing Receivable, Past Due [Line Items]          
Fair value of PCI loans         39,261
Loan receivable outstanding balance 3,494,447       $ 7,905,524
Number of troubled debt restructured loans | Loan         1
Impaired Financing Receivable, with Related Allowance, Recorded Investment         $ 173,925
Paycheck Protection Program | Commercial Portfolio Segment          
Financing Receivable, Past Due [Line Items]          
Number of applications received and processed | Application     54 113  
Loans received and processed     $ 6,900,000 $ 10,500,000  
Forgiveness applications processed outstanding amount 13,400,000        
Loan receivable outstanding balance 1,400,000       5,800,000
Residential | Commercial Real Estate Portfolio Segment          
Financing Receivable, Past Due [Line Items]          
Fair value of PCI loans 3,708,833       4,113,571
Loan receivable outstanding balance $ 316,657,570       $ 319,968,234
Number of troubled debt restructured loans | Loan 3       4
Troubled debt restructured loans $ 472,455       $ 728,288
Impaired Financing Receivable, with Related Allowance, Recorded Investment 173,925       174,776
Specific reserve for troubled debt restructured loans 35,859        
Amount of allowance for loan losses allocated $ 35,859       35,859
Financing receivable, modifications, number of contracts | Loan 0 0      
Financing receivable, troubled debt restructuring, subsequent default, number of contracts | Loan 0 0      
Other real estate owned $ 0       $ 0