PMA Indemnification Trust (Details Narrative)	12 Months Ended
Dec. 31, 2016 USD ($)
Banking and Thrift [Abstract]
Reserve related to partnership assets	$ 250,000
Earnings credited to the trust	$ 204,692

Earnings credited to permanent manager agreement indemnification trust.

No definition available.

Name:	dival_EarningsCreditedToPermanentManagerAgreementIndemnificationTrust
Namespace Prefix:	dival_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration