Condensed Consolidated Balance Sheets - Unaudited (USD $)	Jun. 30, 2013	Sep. 30, 2012
Current assets:
Cash and cash equivalents (Note 2)	$ 36,285,000	$ 53,653,000
Short-term investments restricted (Note 3)	1,200,000	1,200,000
Trade receivables, net	27,148,000	21,438,000
Other receivables	3,801,000	3,880,000
Inventories	46,365,000	41,432,000
Other current assets (Note 2)	5,270,000	7,203,000
Total current assets	120,069,000	128,806,000
Property, plant and equipment, net	187,442,000	202,468,000
Other assets	4,757,000	5,014,000
Total assets	312,268,000	336,288,000
Current liabilities:
Current maturities of short- and long-term debt, net of discount (Note 7)		11,698,000
Current portion of capital lease obligation	1,133,000
Accounts payable	16,934,000	13,982,000
Accrued expenses	8,653,000	6,350,000
Accrued compensation	10,158,000	9,656,000
Total current liabilities	36,878,000	41,686,000
Long-term debt, net of discount (Note 7)	122,258,000	125,232,000
Capital lease obligation	3,266,000
Other long-term liabilities	1,637,000	1,540,000
Shareholders’ equity:
Common stock, $.01 par value, 100,000,000 shares authorized, 27,547,000 and 23,900,000 issued and outstanding	275,000	239,000
Additional paid-in capital	431,433,000	430,448,000
Accumulated other comprehensive loss	(230,000)	(129,000)
Accumulated loss	(283,249,000)	(262,728,000)
Total shareholders’ equity	148,229,000	167,830,000
Total liabilities and shareholders’ equity	$ 312,268,000	$ 336,288,000