XML 65 R54.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Note 7 - Stock Plans - Unrecognized Stock-based Compensation Expense (Details) $ in Thousands | Mar. 31, 2024 USD ($)
--- | ---
Unrecognized stock-based compensation expense | $ 2,434
The 2012 Director Stock Incentive Plan [Member] |
Unrecognized stock-based compensation expense | 210
The 2012 Omnibus Stock Incentive Plan [Member] |
Unrecognized stock-based compensation expense | 216
The 2022 Omnibus Stock Incentive Plan [Member] |
Unrecognized stock-based compensation expense | $ 2,008

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PlanNameAxis=fdbc_The2012DirectorStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=fdbc_The2012OmnibusStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=fdbc_The2022OmnibusStockIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |