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LOANS HELD FOR INVESTMENT, COVID-19 Related Deferral and Modification (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
Loan
Dec. 31, 2020
USD ($)
Loan
Dec. 31, 2019
USD ($)
CARES Act [Abstract]      
TDRs $ 0 $ 0 $ 0
Covid-19 [Member]      
CARES Act [Abstract]      
Number of loans modified under CARES Act | Loan 0    
Percentage of loans modified under CARES Act 0.65% 2.75%  
Number of outstanding loans subject to deferral and modification agreements | Loan 3 25  
Amount of outstanding loans subject to deferral and modification agreements $ 15,900 $ 61,000  
Covid-19 [Member] | Short-term Deferral Modification Program [Member]      
CARES Act [Abstract]      
Amount of outstanding principal balance of loans modified under CARES Act   $ 3,000  
Percentage of loans modified under CARES Act   0.14%  
Commercial [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Interest-Only Payment [Member]      
CARES Act [Abstract]      
Amount of outstanding principal balance of loans modified under CARES Act   $ 1,000  
Period of loan modification   6 months  
Commercial [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member]      
CARES Act [Abstract]      
Amount of outstanding principal balance of loans modified under CARES Act   $ 300  
Period of loan modification   90 days  
Consumer [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member]      
CARES Act [Abstract]      
Amount of outstanding principal balance of loans modified under CARES Act   $ 1,700  
Consumer [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member] | Minimum [Member]      
CARES Act [Abstract]      
Period of loan modification   1 month  
Consumer [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member] | Maximum [Member]      
CARES Act [Abstract]      
Period of loan modification   4 months