- 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_DefinedContributionPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RetirementPlanNameAxis=dbcp_Delmarva401KPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanNameAxis=dbcp_Partners401KPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanNameAxis=dbcp_PartnersDiscretionaryProfitSharingPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Profit Sharing Plan (Details) - USD ($) $ in Thousands	12 Months Ended
Profit Sharing Plan (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Defined contribution plans
Contribution amount	$ 207	$ 169
Delmarva 401(K) Plan
Defined contribution plans
Employer matching contribution (as a percent)	50.00%
Delmarva 401(K) Plan \| Maximum
Defined contribution plans
Employees' gross pay for which the employer contributes a matching contribution (as a percent)	6.00%
Partners 401(K) Plan
Defined contribution plans
Employer matching contribution (as a percent)	50.00%
Partners 401(K) Plan \| Maximum
Defined contribution plans
Employees' gross pay for which the employer contributes a matching contribution (as a percent)	6.00%
Partners Discretionary Profit Sharing Plan
Defined contribution plans
Employer contribution (as a percent)	3.00%