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Note 14 - Commitments and Contingencies (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 28, 2012
Monthly Lease Payments	$ 11

X

- Definition

Monthly Lease Payments

+ References

No definition available.

+ Details

Name:	dgtc_MonthlyLeasePayments
Namespace Prefix:	dgtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration