Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Sep. 30, 2010
Current Assets:
Cash and cash equivalents	$ 23,217	$ 11,391
Available-for-sale securities	12,196	8,093
Held-to-maturity securities	3,030	1,012
Accounts receivable, net of allowance for doubtful accounts of $155 and $461 as of September 30, 2011 and 2010, respectively	7,694	8,987
Inventories	4,150	3,047
Deferred tax assets	376	247
Prepaids and other	3,101	4,701
Total Current Assets	53,764	37,478
Property and equipment, net	47,926	65,395
Available-for-sale securities	29,754	33,178
Held-to-maturity securities	0	3,112
Deferred tax assets	9,029	2,606
Intangible assets, net	10,629	15,257
Goodwill	8,010	8,010
Other assets, net	3,542	5,243
Total Assets	162,654	170,279
Current Liabilities:
Accounts payable	2,421	3,341
Accrued liabilities:
Compensation	3,474	930
Accrued other	1,933	1,753
Deferred revenue	603	562
Other current liabilities	2,609	1,061
Total Current Liabilities	11,040	7,647
Deferred revenue, less current portion	3,594	3,598
Other long-term liabilities	2,684	4,675
Total Liabilities	17,318	15,920
Commitments and Contingencies (Note 9)
Stockholders' Equity:
Series A preferred stock - $.05 par value, 450,000 shares authorized; no shares issued and outstanding
Common stock - $.05 par value, 45,000,000 shares authorized; 17,531,408 and 17,423,601 shares issued and outstanding	877	871
Additional paid-in capital	74,490	69,702
Accumulated other comprehensive (loss) income	(153)	886
Retained earnings	70,122	82,900
Total Stockholders' Equity	145,336	154,359
Total Liabilities and Stockholders' Equity	$ 162,654	$ 170,279