Regulatory Capital Requirements - Summary of Actual Capital Amounts and Ratios As Compared to Regulatory Requirements (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
PDL Community Bancorp
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	$ 186,940	$ 181,196
Tier 1 Capital to Risk-Weighted Assets, Actual Amount	177,307	172,603
Common Equity Tier 1 Capital Ratio, Actual Amount	177,307	172,603
Tier 1 Capital to Total Assets, Actual Amount	$ 177,307	$ 172,603
Total Capital to Risk-Weighted Assets, Actual Ratio	24.36%	26.57%
Tier 1 Capital to Risk-Weighted Assets, Actual Ratio	23.11%	25.31%
Common Equity Tier 1 Capital Ratio, Actual Ratio	23.11%	25.31%
Tier 1 Capital to Total Assets, Actual Ratio	18.13%	20.02%
Total Capital to Risk-Weighted Assets, For Capital Adequacy Amount	$ 61,385	$ 54,557
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Amount	46,038	40,917
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Amount	34,529	30,688
Tier 1 Capital to Total Assets, For Capital Adequacy Amount	$ 39,114	$ 34,486
Total Capital to Risk-Weighted Assets, For Capital Adequacy Ratio	8.00%	8.00%
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Ratio	6.00%	6.00%
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Ratio	4.50%	4.50%
Tier 1 Capital to Total Assets, For Capital Adequacy Ratio	4.00%	4.00%
Total Capital to Risk-Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 76,731	$ 68,196
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	61,385	54,557
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	49,875	44,327
Tier 1 Capital to Total Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 48,892	$ 43,108
Total Capital to Risk-Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	8.00%	8.00%
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 Capital to Total Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%	5.00%
Ponce Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital to Risk-Weighted Assets, Actual Amount	$ 148,486	$ 141,120
Tier 1 Capital to Risk-Weighted Assets, Actual Amount	138,872	132,577
Common Equity Tier 1 Capital Ratio, Actual Amount	138,872	132,577
Tier 1 Capital to Total Assets, Actual Amount	$ 138,872	$ 132,577
Total Capital to Risk-Weighted Assets, Actual Ratio	19.39%	20.73%
Tier 1 Capital to Risk-Weighted Assets, Actual Ratio	18.14%	19.48%
Common Equity Tier 1 Capital Ratio, Actual Ratio	18.14%	19.48%
Tier 1 Capital to Total Assets, Actual Ratio	13.66%	14.67%
Total Capital to Risk-Weighted Assets, For Capital Adequacy Amount	$ 61,261	$ 54,447
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Amount	45,946	40,835
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Amount	34,459	30,626
Tier 1 Capital to Total Assets, For Capital Adequacy Amount	$ 40,652	$ 36,152
Total Capital to Risk-Weighted Assets, For Capital Adequacy Ratio	8.00%	8.00%
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Ratio	6.00%	6.00%
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Ratio	4.50%	4.50%
Tier 1 Capital to Total Assets, For Capital Adequacy Ratio	4.00%	4.00%
Total Capital to Risk-Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 76,577	$ 68,059
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	61,261	54,447
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	49,775	44,238
Tier 1 Capital to Total Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 50,815	$ 45,190
Total Capital to Risk-Weighted Assets, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	10.00%	10.00%
Tier 1 Capital to Risk-Weighted Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	8.00%	8.00%
Common Equity Tier 1 Capital Ratio, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	6.50%	6.50%
Tier 1 Capital to Total Assets, For Capital Adequacy Ratio, To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio	5.00%	5.00%

Common equity tier one capital required for capital adequacy to risk weighted assets.

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Common equity tier one capital required to be well capitalized to average assets.

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The amount of total capital as defined in the regulations.

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The minimum amount of Total Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The amount of Total Capital required to be categorized as well as capitalized under the regulatory framework for prompt corrective action.

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The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

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Percentage of Common Equity Tier One Risk-based Capital to total risk-weighted assets, as defined by regulatory framework.

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Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as adequately capitalized under regulatory framework for prompt corrective action.

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Amount of Common Equity Tier 1 Risk-based Capital required to be categorized as well-capitalized under regulatory framework for prompt corrective action.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

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The minimum amount of Tier 1 Leverage Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action.

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The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

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Tier 1 Risk Based Capital as defined in the regulations.

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