Strategic Alternatives Review / Rights Plan (Details)	9 Months Ended
Sep. 30, 2012
Strategic Alternatives Review / Rights Plan
Number of stock purchase rights declared as dividend per share	1
Term of Rights Plan	6 months
Percentage of common stock	10.00%

The minimum threshold of outstanding common stock acquired or tender offer of common stock, as a percent, for right holder to exercise rights.

No definition available.

Name:	dgit_ThresholdExerciseOfRights
Namespace Prefix:	dgit_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant