Employee and Director Benefit Plans (Details) (USD $)	9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Shares reserved for future issuance
Number of Shares Authorized	987,000
2005 Employee Stock Purchase Plan [Member]
Shares reserved for future issuance
Number of Shares Available for Grant	11,000
Share-based Compensation Arrangement, Employee Stock Purchase Plan
Maximum Employee Subscription Rate	10.00%
Discount from Market Price, Offering Date	15.00%
Discount from Market Price, Purchase Date	15.00%
Shares Issued in Period	19,032
All Option and Restricted Stock Unit Plans [Member]
Shares reserved for future issuance
Unexercised stock options and unvested restricted stock units	644,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures
Options, Outstanding, Number, Beginning Balance	651,000	515,000
Options, Grants in Period, Gross	62,000	165,000
Options, Exercises in Period	(13,000)	(7,000)
Options, Forfeitures and Expirations in Period	(122,000)	(26,000)
Options, Outstanding, Number, Ending Balance	578,000	647,000
Options, Outstanding, Weighted Average Exercise Price - Beginning Balance (in $)	$ 15.20	$ 16.84
Options, Grants in Period, Weighted Average Exercise Price (in $)	$ 10.80	$ 11.96
Options, Exercises in Period, Weighted Average Exercise Price (in $)	$ 9.42	$ 4.03
Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price (in $)	$ 14.89	$ 26.98
Options, Outstanding, Weighted Average Exercise Price - Ending Balance (in $)	$ 14.92	$ 15.31
Options, Exercisable, Number	480,000	442,000
Options, Exercisable, Weighted Average Exercise Price (in $)	$ 15.46	$ 16.06
2005 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Award, Award Vesting Period (in years)	3 years
Portion of Grant Vesting at Cliff Vest Date	25.00%
Number of Months in Cliff Vesting Period	9 months
Portion of Grant Vesting Ratably After Cliff Vest Date	75.00%
Number of Months in the Ratable Vesting Period	2 years 3 months
Shares reserved for future issuance
Number of Additional Shares Authorized		300,000
Number of Shares Available for Grant	309,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Equity Instruments Other than Options, Nonvested, Number - Beginning Balance	0
Equity Instruments Other than Options, Grants in Period	66,000
Equity Instruments Other than Options, Vested in Period	0
Equity Instruments Other than Options, Forfeited in Period	(1,000)
Equity Instruments Other than Options, Nonvested, Number - Ending Balance	65,000
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value - Beginning (in $)	$ 0.00
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in $)	$ 10.58
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value (in $)	$ 0.00
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value (in $)	$ 10.74
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value - Ending (in $)	$ 10.58
2005 Directors Stock Option Plan [Member]
Shares reserved for future issuance
Number of Additional Shares Authorized		20,000
Number of Shares Available for Grant	23,000