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REGULATORY CAPITAL (Summary of actual capital amounts and ratios) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 leverage ratio (to average assets), Actual Amount | $ 641,082 | $ 575,380
Tier 1 leverage ratio (to average assets), Actual Ratio | 0.102 | 0.085
Tier 1 leverage ratio (to average assets), For Capital Adequacy Amount | $ 250,963 | $ 270,863
Tier 1 leverage ratio (to average assets), For Capital Adequacy Ratio | 0.040 | 0.040
Tier 1 common equity (to risk-weighted assets), Actual Amount | $ 620,462 | $ 554,760
Tier 1 common equity (to risk-weighted assets), Actual Ratio | 0.121 | 0.141
Tier 1 common equity (to risk-weighted assets), For Capital Adequacy Amount | $ 230,879 | $ 177,646
Tier 1 common equity (to risk-weighted assets), For Capital Adequacy Ratio | 0.045% | 0.045%
Tier 1 common equity (to risk-weighted assets), Minimum Capital Conservation Buffer | 0.025 | 0.025
Tier 1 capital (to risk-weighted assets), Actual Amount | $ 641,082 | $ 575,380
Tier 1 capital (to risk-weighted assets), Actual Ratio | 0.125 | 0.146
Tier 1 capital (to risk-weighted assets), For Capital Adequacy Amount | $ 307,838 | $ 236,861
Tier 1 capital (to risk-weighted assets), For Capital Adequacy Ratio | 0.060 | 0.060
Tier 1 capital (to risk-weighted assets), Minimum Capital Conservation Buffer | 0.025 | 0.025
Total capital (to risk-weighted assets), Actual Amount | $ 686,139 | $ 635,002
Total capital (to risk-weighted assets), Actual Ratio | 0.134 | 0.161
Total capital (to risk-weighted assets), For Capital Adequacy Amount | $ 410,451 | $ 315,815
Total capital (to risk-weighted assets), For Capital Adequacy Ratio | 0.080 | 0.080
Total capital (to risk-weighted assets), Minimum Capital Conservation Buffer | 0.025 | 0.025
Percentage of capital conversion buffer | 0.054% | 0.081%
Metropolitan Commercial Bank |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |
Tier 1 leverage ratio (to average assets), Actual Amount | $ 628,825 | $ 566,835
Tier 1 leverage ratio (to average assets), Actual Ratio | 0.100 | 0.084
Tier 1 leverage ratio (to average assets), For Capital Adequacy Amount | $ 250,920 | $ 270,800
Tier 1 leverage ratio (to average assets), For Capital Adequacy Ratio | 0.040 | 0.040
Tier 1 leverage ratio (to average assets), To be Well Capitalized under Prompt Corrective Action Regulations Amount | $ 313,650 | $ 338,499
Tier 1 leverage ratio (to average assets), To be Well Capitalized under Prompt Corrective Action Regulations Ratio | 0.050 | 0.050
Tier 1 common equity (to risk-weighted assets), Actual Amount | $ 628,825 | $ 566,835
Tier 1 common equity (to risk-weighted assets), Actual Ratio | 0.123 | 0.144
Tier 1 common equity (to risk-weighted assets), For Capital Adequacy Amount | $ 230,815 | $ 177,582
Tier 1 common equity (to risk-weighted assets), For Capital Adequacy Ratio | 0.045% | 0.045%
Tier 1 common equity (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Regulations Amount | $ 333,399 | $ 256,508
Tier 1 common equity (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Regulations Ratio | 0.065% | 0.065%
Tier 1 common equity (to risk-weighted assets), Minimum Capital Conservation Buffer | 0.025 | 0.025
Tier 1 capital (to risk-weighted assets), Actual Amount | $ 628,825 | $ 566,835
Tier 1 capital (to risk-weighted assets), Actual Ratio | 0.123 | 0.144
Tier 1 capital (to risk-weighted assets), For Capital Adequacy Amount | $ 307,753 | $ 236,777
Tier 1 capital (to risk-weighted assets), For Capital Adequacy Ratio | 0.060 | 0.060
Tier 1 capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Regulations Amount | $ 410,337 | $ 315,702
Tier 1 capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Regulations Ratio | 0.080 | 0.080
Tier 1 capital (to risk-weighted assets), Minimum Capital Conservation Buffer | 0.025 | 0.025
Total capital (to risk-weighted assets), Actual Amount | $ 673,876 | $ 601,740
Total capital (to risk-weighted assets), Actual Ratio | 0.131 | 0.152
Total capital (to risk-weighted assets), For Capital Adequacy Amount | $ 410,337 | $ 315,702
Total capital (to risk-weighted assets), For Capital Adequacy Ratio | 0.080 | 0.080
Total capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Regulations Amount | $ 512,922 | $ 394,628
Total capital (to risk-weighted assets), To be Well Capitalized under Prompt Corrective Action Regulations Ratio | 0.100 | 0.100
Total capital (to risk-weighted assets), Minimum Capital Conservation Buffer | 0.025 | 0.025
Percentage of capital conversion buffer | 0.051% | 0.073%

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