Nature of Business and Significant Accounting Policies (Details)	12 Months Ended
Sep. 30, 2012 gal
Product Information [Line Items]
Annual ethanol production	50,000,000

Amount of ethanol the company is able to produce annually

No definition available.

Name:	lwenergy_AnnualEthanolProduction
Namespace Prefix:	lwenergy_
Data Type:	num:volumeItemType
Balance Type:	na
Period Type:	duration