Nature of Business and Significant Accounting Policies Trade accounts receivable (Details)	Jun. 30, 2012 D
Trade accounts receivable [Abstract]
Number of days outstanding for a past due trade receivables	90

Number of days a receivable is considered past due if any portion of the receivable is outstanding.

No definition available.

Name:	lwenergy_NumberOfDaysOutstandingForPastDueTradeReceivables
Namespace Prefix:	lwenergy_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant