Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Operating Activities:
Net income	$ 11,947	$ 12,031	$ 15,167
Adjustments to reconcile net income to net cash provided by operating activities from continuing operations:
Loss (income) from discontinued operations		176	(588)
Depreciation and amortization	2,805	2,715	2,886
Gains on sales of available-for-sale securities, net and strategic investments	(492)	(842)	(1,430)
Impairment losses on strategic investments	1,500	1,184	158
Stock-based compensation	2,381	3,337	2,552
Deferred taxes	93	(352)	(492)
Excess tax (benefit) deficiency from stock-based compensation plans	(432)	(236)	477
(Gain) loss on disposals of property and equipment	(39)	2	(62)
Change in operating assets and liabilities, excluding the impact of discontinued operations:
Accounts receivable	(2,727)	581	(263)
Inventories	(162)	511	196
Prepaids and other	141	(23)	(40)
Accounts payable and accrued liabilities	373	(738)	238
Income taxes	(309)	116	(989)
Deferred revenue	(13)	75	(29)
Net cash provided by operating activities from continuing operations	15,066	18,537	17,781
Investing Activities:
Purchases of property and equipment	(1,877)	(2,278)	(1,919)
Cash proceeds from sale of property and equipment	42		77
Purchases of available-for-sale securities	(3,376)	(138,363)	(45,053)
Sales and maturities of available-for-sale securities	22,199	162,673	44,853
Business combination	(270)
Cash received from sale of strategic investments	21	709	2,236
Cash transferred to discontinued operations	(45)	(354)	(116)
Net cash provided by investing activities from continuing operations	16,694	22,387	78
Financing Activities:
Excess tax benefit (deficiency) from stock-based compensation plans	432	236	(477)
Issuance of common stock	710	512	419
Repurchase of common stock	(20,000)	(12,545)	(17,805)
Purchases of common stock to pay employee taxes	(825)	(1,111)	(41)
Net cash used in financing activities from continuing operations	(19,683)	(12,908)	(17,904)
Net cash provided by (used in) continuing operations	12,077	28,016	(45)
Discontinued Operations:
Net cash used in operating activities	(45)	(354)	(116)
Net cash provided by financing activities	45	354	116
Net change in cash and cash equivalents	12,077	28,016	(45)
Cash and Cash Equivalents:
Beginning of year	43,511	15,495	15,540
End of year	55,588	43,511	15,495
Supplemental Information:
Cash paid for income taxes	6,510	6,295	7,115
Noncash financing and investing activities:
Acquisition of property and equipment on account	22	11	26
Share repurchase accrual			$ 1,004
Issuance of performance shares, restricted and deferred stock units	2,250	$ 3,007
Accrual of business combination contingent consideration	$ 305