Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014
Current Assets:
Cash and cash equivalents	$ 26,560	$ 43,511
Available-for-sale securities	4,125	3,040
Accounts receivable, net of allowance for doubtful accounts of $30 and $42 as of December 31, 2014 and September 30, 2014, respectively	4,442	4,751
Inventories	2,829	2,817
Deferred tax assets	360	394
Prepaids and other	712	751
Current assets of discontinued operations		16
Total Current Assets	39,028	55,280
Property and equipment, net	12,674	13,133
Available-for-sale securities	16,933	16,823
Deferred tax assets	5,741	6,718
Intangible assets, net	2,760	2,946
Goodwill	8,010	8,010
Other assets, net	1,979	1,979
Total Assets	87,125	104,889
Current Liabilities:
Accounts payable	1,529	1,028
Accrued liabilities:
Compensation	902	2,061
Accrued other	1,056	881
Deferred revenue	52	52
Current liabilities of discontinued operations		45
Total Current Liabilities	3,539	4,067
Deferred revenue, less current portion	213	226
Other long-term liabilities	1,722	1,845
Total Liabilities	5,474	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; 12,938,433 and 13,606,545 shares issued and outstanding, respectively	647	680
Additional paid-in capital	729	2,662
Accumulated other comprehensive income	446	1,528
Retained earnings	79,829	93,881
Total Stockholders' Equity	81,651	98,751
Total Liabilities and Stockholders' Equity	$ 87,125	$ 104,889