Cash Equivalents and Short-Term Investments - Additional Information (Detail)	3 Months Ended
Mar. 31, 2014
Cash And Cash Equivalents [Abstract]
Contractual maturity expiration dates	1 year

Available for sale securities maximum range to be classified as short term investment.

No definition available.

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Namespace Prefix:	dwre_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration