PMA Indemnification Trust (Details Narrative)	3 Months Ended
Mar. 31, 2017 USD ($)
Banking and Thrift [Abstract]
Reserve related to partnership assets	$ 250,000
Earnings credited to the trust	$ 205,807

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