Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
Current assets:
Cash and cash equivalents	$ 30,197	$ 45,665
Investments, current portion	52,092	51,455
Receivables, net	10,900	14,910
Deferred tax assets, net	6,424	7,977
Prepaid expenses and other current assets	15,815	14,977
Total current assets	115,428	134,984
Investments, less current portion	7,040	4,533
Property and equipment, net	92,459	91,939
Goodwill	20,579	20,579
Deferred tax assets, net	4,570	5,576
Other assets	11,065	10,547
Total assets	251,141	268,158
Current liabilities:
Accounts payable and accrued expenses	31,186	40,865
Deferred revenue	43,249	52,564
Accrued tool sets	4,381	4,264
Income tax payable		744
Other current liabilities	1,472	1,003
Total current liabilities	80,288	99,440
Deferred rent liability	12,598	12,946
Construction liability	7,354	2,421
Other liabilities	7,530	7,266
Total liabilities	107,770	122,073
Commitments and contingencies (Note 9)
Shareholders' equity:
Common stock, $0.0001 par value, 100,000,000 shares authorized, 30,250,370 shares issued and 24,363,343 shares outstanding at Dec 31, 2012 and 30,222,132 shares issued and 24,891,205 shares outstanding at September 30, 2012	3	3
Preferred stock, $0.0001 par value, 10,000,000 shares authorized; 0 shares issued and outstanding
Paid-in capital	168,528	166,970
Treasury stock, at cost 5,887,027 shares at December 31, 2012 and 5,330,927 at September 30, 2012	(89,288)	(83,924)
Retained earnings	64,128	63,036
Total shareholders' equity	143,371	146,085
Total liabilities and shareholders' equity	$ 251,141	$ 268,158