Lease Commitments - Maturities of lease Liabilities (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Lease Commitments
One year or less	$ 468
One to three years	772
Three to five years	714
Over five years	2,002
Total lease payments	3,956
Less: Interest	(642)
Present value of lease payments	$ 3,314

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating and finance leases, due in next rolling twelve months following latest statement of financial position date.

+ References

No definition available.

+ Details

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Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating and finance leases.

+ References

No definition available.

+ Details

Name:	dbcp_LesseeOperatingAndFinanceLeasesLiabilityPaymentsDue
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating and finance leases, due after fifth rolling twelve months following latest statement of financial position date.

+ References

No definition available.

+ Details

Name:	dbcp_LesseeOperatingAndFinanceLeasesLiabilityPaymentsDueAfterRollingYearFive
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating and finance leases, due in fourth and fifth rolling twelve months following latest statement of financial position date.

+ References

No definition available.

+ Details

Name:	dbcp_LesseeOperatingAndFinanceLeasesLiabilityPaymentsDueInRollingYearsFourAndFive
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments for operating and finance leases, due in second and third rolling twelve months following latest statement of financial position date.

+ References

No definition available.

+ Details

Name:	dbcp_LesseeOperatingAndFinanceLeasesLiabilityPaymentsDueInRollingYearsTwoAndThree
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating and finance leases.

+ References

No definition available.

+ Details

Name:	dbcp_LesseeOperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating and finance leases.

+ References

No definition available.

+ Details

Name:	dbcp_OperatingAndFinanceLeaseLiability
Namespace Prefix:	dbcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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