XML 144 R121.htm IDEA: XBRL DOCUMENT
v3.22.4

STOCK-BASED COMPENSATION - Stock Option Awards Exercise Price Range (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
$34.87 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercise Prices | $ 34.87 |
$35.35 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercise Prices | 35.35 |
$36.19 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercise Prices | 36.19 |
Stock Option Awards |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Exercise Prices | $ 35.39 | $ 35.39
Outstanding Options, Amount | 92,137 | 121,253
Outstanding Options, Weighted Average Contractual Years Remaining | 6 years 2 months 12 days |
Vested Options, Amount | 92,137 |
Vested Options, Weighted Average Contractual Years Remaining | 6 years 2 months 12 days |
Stock Option Awards | $34.87 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding Options, Amount | 35,671 |
Outstanding Options, Weighted Average Contractual Years Remaining | 7 years 1 month 6 days |
Vested Options, Amount | 35,671 |
Vested Options, Weighted Average Contractual Years Remaining | 7 years 1 month 6 days |
Stock Option Awards | $35.35 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding Options, Amount | 32,079 |
Outstanding Options, Weighted Average Contractual Years Remaining | 6 years 1 month 6 days |
Vested Options, Amount | 32,079 |
Vested Options, Weighted Average Contractual Years Remaining | 6 years 1 month 6 days |
Stock Option Awards | $36.19 |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Outstanding Options, Amount | 24,387 |
Outstanding Options, Weighted Average Contractual Years Remaining | 5 years 1 month 6 days |
Vested Options, Amount | 24,387 |
Vested Options, Weighted Average Contractual Years Remaining | 5 years 1 month 6 days |

X
- Definition It represents information pertaining to vested options contractual term + References No definition available. + Details
Name: | dcom_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageRemainingContractualTerm2
Namespace Prefix: | dcom_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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 No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcom_ExercisePrice1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcom_ExercisePrice2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=dcom_ExercisePrice3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |