Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011
Current Assets:
Cash and cash equivalents	$ 15,540	$ 23,217
Available-for-sale securities	14,117	12,196
Held-to-maturity securities		3,030
Accounts receivable, net of allowance for doubtful accounts of $40 and $32 as of September 30, 2012 and 2011, respectively	5,069	4,385
Inventories	3,524	3,181
Deferred tax assets	219	327
Prepaids and other	603	2,268
Current assets of discontinued operations	883	5,983
Total Current Assets	39,955	54,587
Property and equipment, net	13,610	14,586
Available-for-sale securities	28,433	29,754
Deferred tax assets	5,806	8,832
Intangible assets, net	4,430	5,199
Goodwill	8,010	8,010
Other assets, net	2,831	3,303
Non-current assets of discontinued operations		32,511
Total Assets	103,075	156,782
Current Liabilities:
Accounts payable	1,657	1,572
Accrued liabilities:
Compensation	2,319	1,952
Accrued other	1,066	1,241
Deferred revenue	47	53
Other current liabilities	170	873
Current liabilities of discontinued operations	1,640	5,349
Total Current Liabilities	6,899	11,040
Deferred revenue, less current portion	185	222
Other long-term liabilities	2,247	2,421
Non-current liabilities of discontinued operations		3,491
Total Liabilities	9,331	17,174
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; 14,656,806 and 17,531,408 shares issued and outstanding, respectively	733	877
Additional paid-in capital	18,346	74,490
Accumulated other comprehensive income (loss)	40	(153)
Retained earnings	74,625	64,394
Total Stockholders' Equity	93,744	139,608
Total Liabilities and Stockholders' Equity	$ 103,075	$ 156,782