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Note 1 - Summary of Significant Accounting Policies (Detail)	12 Months Ended
	Jul. 28, 2012
Number Of Business Lines	1

X

- Definition

Number Of Business Lines

+ References

No definition available.

+ Details

Name:	dgtc_NumberOfBusinessLines
Namespace Prefix:	dgtc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration