XML 64 R54.htm IDEA: XBRL DOCUMENT
v3.24.3

LOANS HELD FOR INVESTMENT, NET - Amortized Cost of Loans Modified (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | $ 40,680 | $ 34,024 | $ 108,288 | $ 37,747
% of Total Class of Financing Receivable | 0.40% | 0.30% | 1.00% | 0.30%
Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | $ 15,971 |  | $ 16,077 | $ 126
Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  | $ 33,995 | 66,384 | 36,849
Term Extension and Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | 190 | 471
Significant Payment Delay and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | 24,709 | 29 | 24,737 | 301
Term Extension and Interest Rate Reductions |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | 900 |
Business Loans |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | $ 15,971 | $ 9,319 | $ 17,487 | $ 10,188
% of Total Class of Financing Receivable | 0.60% | 0.40% | 0.70% | 0.40%
Business Loans | Term Extension |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | $ 15,971 |  | $ 16,077 | $ 126
Business Loans | Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  | $ 9,290 | 1,192 | 9,290
Business Loans | Term Extension and Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | 190 | 471
Business Loans | Significant Payment Delay and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  | 29 | 28 | 301
One-to-Four Family Residential and Cooperative/Condominium Apartment |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | $ 900 | $ 2,854
% of Total Class of Financing Receivable |  |  | 0.10% | 0.30%
One-to-Four Family Residential and Cooperative/Condominium Apartment | Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  |  | $ 2,854
One-to-Four Family Residential and Cooperative/Condominium Apartment | Term Extension and Interest Rate Reductions |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | $ 900 |
Multifamily Residential and Residential Mixed-Use |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | $ 34,095 |
% of Total Class of Financing Receivable |  |  | 0.90% |
Multifamily Residential and Residential Mixed-Use | Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  |  | $ 34,095 |
Non-Owner-Occupied Commercial Real Estate |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | $ 24,709 | $ 24,705 | $ 55,806 | $ 24,705
% of Total Class of Financing Receivable | 0.80% | 0.70% | 1.70% | 0.70%
Non-Owner-Occupied Commercial Real Estate | Significant Payment Delay |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified |  | $ 24,705 | $ 31,097 | $ 24,705
Non-Owner-Occupied Commercial Real Estate | Significant Payment Delay and Interest Rate Reduction |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |
Total loans that have been modified | $ 24,709 |  | $ 24,709 |

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestModifiedPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage, excluding accrued interest, of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-42 + Details
Name: | us-gaap_FinancingReceivableModificationToTotalFinancingReceivablesExcludingAccruedInterestPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_PaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=dcom_ExtendedMaturityAndPaymentDelayMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=dcom_PaymentDelayAndInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityAndInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=dcom_BusinessLoanPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=dcom_OneToFourFamilyResidentialAndCooperativeUnitAllowanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=dcom_MultifamilyResidentialAndResidentialMixedUseAllowanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=dcom_NonOwnerOccupiedCommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |