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STOCKHOLDERS' EQUITY AND REGULATORY MATTERS (Tables)
 12 Months Ended
Dec. 31, 2020
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, 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
As of December 31, 2019      
Tier 1 leverage ratio (to average assets)$176,403 10.19 %$     ≥69,239 ≥4.0%N/AN/A
Common Tier 1 risk-based capital ratio (to risk-weighted assets)176,403 14.50 ≥54,759 ≥4.5N/AN/A
Tier 1 risk-based capital ratio (to risk-weighted assets)176,403 14.50 ≥73,012 ≥6.0N/AN/A
Total risk-based capital ratio (to risk-weighted assets)190,319 15.64 ≥97,349 ≥8.0N/AN/A
BANK      
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 ≥4.5106,366 ≥6.5 
Tier 1 risk-based capital ratio (to risk-weighted assets)226,800 13.86 ≥98,184 ≥6.0130,912 ≥8.0 
Total risk-based capital ratio (to risk-weighted assets)247,119 15.10 ≥130,912 ≥8.0163,640 ≥10.0 
As of December 31, 2019      
Tier 1 leverage ratio (to average assets)$171,179 9.93 %$     ≥68,982 ≥4.0%$     ≥86,228 ≥5.0 %
Common Tier 1 risk-based capital ratio (to risk-weighted assets)171,179 14.13 ≥54,514 ≥4.5≥78,742 ≥6.5 
Tier 1 risk-based capital ratio (to risk-weighted assets)171,179 14.13 ≥72,685 ≥6.0≥96,913 ≥8.0 
Total risk-based capital ratio (to risk-weighted assets)185,095 15.28 ≥96,913 ≥8.0≥121,142 ≥10.0 
(1) Amounts and ratios do not include capital conservation buffer.