Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Current Assets:
Cash and cash equivalents	$ 30,015	$ 43,511
Available-for-sale securities	19,119	3,040
Accounts receivable, net of allowance for doubtful accounts of $36 and $42 as of March 31, 2015 and September 30, 2014, respectively	4,927	4,751
Inventories	3,195	2,817
Deferred tax assets	359	394
Income tax receivable	1,223	59
Prepaids and other	926	692
Current assets of discontinued operations		16
Total Current Assets	59,764	55,280
Property and equipment, net	12,419	13,133
Available-for-sale securities		16,823
Deferred tax assets	5,946	6,718
Intangible assets, net	2,574	2,946
Goodwill	8,010	8,010
Other assets, net	1,979	1,979
Total Assets	90,692	104,889
Current Liabilities:
Accounts payable	1,141	1,028
Accrued liabilities:
Compensation	1,417	2,061
Accrued other	947	881
Deferred revenue	49	52
Current liabilities of discontinued operations		45
Total Current Liabilities	3,554	4,067
Deferred revenue, less current portion	217	226
Other long-term liabilities	1,741	1,845
Total Liabilities	5,512	6,138
Commitments and Contingencies (Note 16)
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; 13,007,830 and 13,606,545 shares issued and outstanding, respectively	650	680
Additional paid-in capital	1,620	2,662
Accumulated other comprehensive income	30	1,528
Retained earnings	82,880	93,881
Total Stockholders' Equity	85,180	98,751
Total Liabilities and Stockholders' Equity	$ 90,692	$ 104,889