Acquisition of Kleer Lumber (Details) (Kleer Lumber, Inc., USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Kleer Lumber, Inc.
Acquisition
Total cash consideration of acquisition	$ 43,000,000
Fees for advisory, legal and other professional services	900,000
Estimated fair values of assets acquired and liabilities assumed
Current assets	5,520,000
Property, plant and equipment	4,100,000
Goodwill and intangible assets	36,330,000
Current liabilities	(3,000,000)
Net assets acquired	42,950,000
Pro forma consolidated revenue and net loss
Revenue	156,979,000	145,128,000
Net loss	$ (5,739,000)	$ (23,982,000)