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LONG TERM INVESTMENTS - ADDITIONAL INFORMATION (Details)	12 Months Ended
	Sep. 30, 2012
Investment [Line Items]
Interest rate below prime rate	0.375%

X

- Definition

Debt Instrument Interest below Prime Rate

+ References

No definition available.

+ Details

Name:	dwog_DebtInstrumentInterestBelowPrimeRate
Namespace Prefix:	dwog_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	invest_InvestmentLineItems
Namespace Prefix:	invest_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration