Property, Plant and Equipment Property, Plant and Equipment (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2013	May 31, 2014	Jun. 01, 2013	May 31, 2014	Jun. 01, 2013	Aug. 31, 2013
Property, Plant and Equipment [Abstract]
Gross proceeds from sale	$ 2,300,000
Gain on sale	629,000	0	0	629,000	(28,000)
3M lease payments received						860,000
3M depreciation expense						$ 148,000