Balance Sheets (USD $)	Sep. 30, 2011	Sep. 30, 2010
Current assets:
Cash and cash equivalents	$ 26,077,000	$ 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 September 30, 2011 and 2010, respectively	86,716,000	57,726,000
Prepaid expenses and other assets	4,254,000	7,856,000
Current deferred tax asset	1,236,000	1,764,000
Total current assets	118,283,000	117,033,000
Property, plant and equipment	302,647,000	248,943,000
Less accumulated depreciation	(156,106,000)	(130,900,000)
Net property, plant and equipment	146,541,000	118,043,000
Total assets	264,824,000	235,076,000
Current liabilities:
Accounts payable	18,732,000	14,274,000
Accrued liabilities:
Payroll costs and other taxes	1,436,000	2,969,000
Other	9,230,000	8,619,000
Deferred revenue	9,616,000	204,000
Current maturities of note payable	5,290,000	0
Total current liabilities	44,304,000	26,066,000
Long-term liabilities:
Note payable less current maturities	10,281,000	0
Deferred tax liability	22,076,000	18,785,000
Total long-term liabilities	32,357,000	18,785,000
Stockholders' equity:
Preferred stock-par value $1.00 per share; 5,000,000 shares authorized, none outstanding
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 September 30, 2011 and 2010, respectively	2,637,000	2,634,000
Additional paid-in capital	91,591,000	90,406,000
Accumulated other comprehensive income, net of tax	0	4,000
Retained earnings	93,935,000	97,181,000
Total stockholders' equity	188,163,000	190,225,000
Total liabilities and stockholders' equity	$ 264,824,000	$ 235,076,000