Balance Sheets (USD $)	Jun. 30, 2011	Sep. 30, 2010
Current assets:
Cash and cash equivalents	$ 12,004,000	$ 29,675,000
Short-term investments	0	20,012,000
Accounts receivable, net of allowance for doubtful accounts of $155,000 and $639,000 at June 30, 2011 and September 30, 2010, respectively	84,451,000	57,726,000
Prepaid expenses and other assets	11,936,000	7,856,000
Current deferred tax asset	1,545,000	1,764,000
Total current assets	109,936,000	117,033,000
Property, plant and equipment	300,649,000	248,943,000
Less accumulated depreciation	(149,274,000)	(130,900,000)
Net property, plant and equipment	151,375,000	118,043,000
Total assets	261,311,000	235,076,000
Current liabilities:
Accounts payable	23,078,000	14,274,000
Accrued liabilities:
Payroll costs and other taxes	2,940,000	3,625,000
Other	8,400,000	7,963,000
Deferred revenue	5,031,000	204,000
Current maturities of notes payable	5,264,000	0
Total current liabilities	44,713,000	26,066,000
Long-term liabilities:
Notes payable less current maturities	11,163,000	0
Deferred tax liability	20,444,000	18,785,000
Total long-term liabilities	31,607,000	18,785,000
Stockholders' equity:
Preferred stock-par value $1.00 per share; 5,000,000 shares authorized, none outstanding	0	0
Common stock-par value $.33 1/3 per share; 50,000,000 shares authorized, 7,910,885 and 7,902,106 shares issued and outstanding at June 30, 2011 and September 30, 2010, respectively	2,637,000	2,634,000
Additional paid-in capital	91,363,000	90,406,000
Other comprehensive income, net of tax	0	4,000
Retained earnings	90,991,000	97,181,000
Total stockholders' equity	184,991,000	190,225,000
Total liabilities and stockholders' equity	$ 261,311,000	$ 235,076,000