Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013
Current Assets:
Cash and cash equivalents	$ 10,516	$ 15,495
Available-for-sale securities	12,481	10,212
Accounts receivable, net of allowance for doubtful accounts of $67 and $26 as of December 31, 2013 and September 30, 2013, respectively	5,110	5,332
Inventories	2,832	3,328
Deferred tax assets	303	506
Prepaids and other	592	860
Current assets of discontinued operations	46	46
Total Current Assets	31,880	35,779
Property and equipment, net	12,486	12,845
Available-for-sale securities	30,149	32,397
Deferred tax assets	5,863	6,038
Intangible assets, net	3,502	3,688
Goodwill	8,010	8,010
Other assets, net	3,166	3,166
Total Assets	95,056	101,923
Current Liabilities:
Accounts payable	1,366	954
Accrued liabilities:
Compensation	844	2,271
Accrued other	1,202	1,149
Share repurchase accrual	513	1,004
Deferred revenue	42	43
Restructuring and other current liabilities	228	416
Current liabilities of discontinued operations	126	139
Total Current Liabilities	4,321	5,976
Deferred revenue, less current portion	151	160
Other long-term liabilities	1,636	1,970
Total Liabilities	6,108	8,106
Commitments and Contingencies (Note 17)
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; 13,622,451 and 13,891,402 shares issued and outstanding, respectively	681	695
Additional paid-in capital		2,028
Accumulated other comprehensive income	25	58
Retained earnings	88,242	91,036
Total Stockholders' Equity	88,948	93,817
Total Liabilities and Stockholders' Equity	$ 95,056	$ 101,923