CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance at Oct. 31, 2008	$ 89,861	$ 120	$ 72,181	$ (2,407)	$ 19,967
Balance (in shares) at Oct. 31, 2008		12,018,670
Stock option exercises, including tax benefit (in shares)		89,376
Stock option exercises, including tax benefit	928	1	927	0	0
Employee Stock Purchase Plan activity (in shares)		7,065
Employee Stock Purchase Plan activity	98	0	98	0	0
Repurchase of the Company's common stock (in shares)		(716,237)
Repurchase of the Company's common stock	(11,018)	(7)	(11,011)	0	0
Stock-based compensation expense	937	0	937	0	0
Comprehensive Income:
Net unrealized gain (loss) on investments	2,499	0	0	2,499	0
Net income	2,706	0	0	0	2,706
Comprehensive income	5,205	0	0	0	0
Balance at Oct. 31, 2009	86,011	114	63,132	92	22,673
Balance (in shares) at Oct. 31, 2009		11,398,874
Stock option exercises, including tax benefit (in shares)		204,807
Stock option exercises, including tax benefit	2,142	2	2,140	0	0
Employee Stock Purchase Plan activity (in shares)		10,809
Employee Stock Purchase Plan activity	150	0	150	0	0
Repurchase of the Company's common stock (in shares)		(385,836)
Repurchase of the Company's common stock	(5,101)	(4)	(5,097)	0	0
Stock-based compensation expense	1,455	0	1,455	0	0
Comprehensive Income:
Net unrealized gain (loss) on investments	(66)	0	0	(66)	0
Net income	4,876	0	0	0	4,876
Comprehensive income	4,810	0	0	0	0
Balance at Oct. 31, 2010	89,467	112	61,780	26	27,549
Balance (in shares) at Oct. 31, 2010	11,228,654	11,228,654
Stock option exercises, including tax benefit (in shares)		378,468
Stock option exercises, including tax benefit	4,227	4	4,223	0	0
Employee Stock Purchase Plan activity (in shares)		10,690
Employee Stock Purchase Plan activity	174	0	174	0	0
Repurchase of the Company's common stock (in shares)		(450,122)
Repurchase of the Company's common stock	(7,580)	(4)	(7,576)	0	0
Stock-based compensation expense	1,231	0	1,231	0	0
Comprehensive Income:
Net unrealized gain (loss) on investments	(60)	0	0	(60)	0
Net income	8,461	0	0	0	8,461
Comprehensive income	8,401	0	0	0	0
Balance at Oct. 31, 2011	$ 95,920	$ 112	$ 59,832	$ (34)	$ 36,010
Balance (in shares) at Oct. 31, 2011	11,167,690	11,167,690