Condensed Consolidated Statements of Operations (Unaudited) (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenue, short-term equipment rentals	$ 263	$ 285	$ 526	$ 555

Revenue earned during the period from short-term rentals of the entity's property or equipment.

No definition available.

Name:	digaob_ShortTermRentalRevenue
Namespace Prefix:	digaob_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration