XML 145 R27.htm IDEA: XBRL DOCUMENT

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2012
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Event On February 7, 2013, the Company formed a joint venture with Calumet Specialty Products Partners, L.P. to develop, build and operate a diesel topping plant in southwestern North Dakota. The joint venture will be called Dakota Prairie Refining, LLC. The Company's participation in the joint venture will be through its wholly owned subsidiary, WBI Energy, Inc.