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STOCKHOLDERS' EQUITY AND REGULATORY MATTERS (Tables)
 12 Months Ended
Dec. 31, 2021
Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]  
The Actual and Required Capital Amounts and Ratios
The actual and required capital amounts and ratios were as follows:
 ActualFor Capital Adequacy
Purposes		To be Well
Capitalized
under Prompt
Corrective Action
Provisions
Dollars in thousandsAmountRatioAmount (1)Ratio (1)AmountRatio
CORPORATION      
As of December 31, 2021      
Tier 1 leverage ratio (to average assets)$249,574 8.91 %$     ≥112,027 ≥4.0%N/AN/A
Common Tier 1 risk-based capital ratio (to risk-weighted assets)243,574 16.08 ≥68,174 ≥4.5N/AN/A
Tier 1 risk-based capital ratio (to risk-weighted assets)249,574 16.47 ≥90,899 ≥6.0N/AN/A
Total risk-based capital ratio (to risk-weighted assets)283,511 18.71 ≥121,199 ≥8.0N/AN/A
As of December 31, 2020      
Tier 1 leverage ratio (to average assets)$224,605 8.90 %$     ≥100,892 ≥4.0%N/AN/A
Common Tier 1 risk-based capital ratio (to risk-weighted assets)224,605 13.68 ≥73,873 ≥4.5N/AN/A
Tier 1 risk-based capital ratio (to risk-weighted assets)224,605 13.68 ≥98,498 ≥6.0N/AN/A
Total risk-based capital ratio (to risk-weighted assets)244,831 14.91 ≥131,330 ≥8.0N/AN/A
BANK      
As of December 31, 2021      
Tier 1 leverage ratio (to average assets)$246,259 8.81 %$     ≥111,766 ≥4.0%$     ≥139,708 ≥5.0 %
Common Tier 1 risk-based capital ratio (to risk-weighted assets)246,259 16.32 ≥67,906 ≥4.5≥98,086 ≥6.5 
Tier 1 risk-based capital ratio (to risk-weighted assets)246,259 16.32 ≥90,541 ≥6.0≥120,722 ≥8.0 
Total risk-based capital ratio (to risk-weighted assets)265,126 17.57 ≥120,722 ≥8.0≥150,902 ≥10.0 
As of December 31, 2020      
Tier 1 leverage ratio (to average assets)$226,800 9.01 %$     ≥100,654 ≥4.0%$     ≥125,818 ≥5.0 %
Common Tier 1 risk-based capital ratio (to risk-weighted assets)226,800 13.86 ≥73,638 ≥4.5≥106,366 ≥6.5 
Tier 1 risk-based capital ratio (to risk-weighted assets)226,800 13.86 ≥98,184 ≥6.0≥130,912 ≥8.0 
Total risk-based capital ratio (to risk-weighted assets)247,119 15.10 ≥130,912 ≥8.0≥163,640 ≥10.0 
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(1) Amounts and ratios do not include capital conservation buffer.