Employee Share Based Plans (Details) (USD $)	1 Months Ended				12 Months Ended						36 Months Ended	60 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009	Sep. 30, 2006	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009	Oct. 31, 2013	Sep. 02, 2011
Incentive Plan Payout Matrix Line Items [Abstract]
Unvested Shares Issued To CEO				65,000
Incentive Compensation Plan Percentage Of Common Stock Vested	50%	30%	20%
Compensation Expense								$ 2,604,000	$ 6,118,000	$ 2,487,000
Tax Benefit								673,000	1,756,000	207,000
Liability								5,015,000	9,914,000
Amount Of Payout					$ 2,296,000	$ 2,719,000	$ 0
Employee Stock Purchase Plan Exercise Price As A Percentage Of Fair Market Value								95.00%
Vesting Period For Common Stock Granted Years												5
Number Of Incentive Compensation Plan Awards								3
Number Of Performance Periods Under Icp Plans											3
EPS Performance Achievement Below 80 Percent of Target [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								0.00%
EPS Performance Achievement 80 Percent Of Target [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								80.00%
EPS Performance Achievement 100 Percent Of Target [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								100.00%
EPS Performance Achievement 120 Percent Of Target [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								120.00%
Annual Shareholder Return Achievement At Less Than 25 Percentile [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								0.00%
Annual Shareholder Return Achievement Between 25 And 39 Percentile [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								80.00%
Annual Shareholder Return Achievement Between 40 And 49 Percentile [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								90.00%
Annual Shareholder Return Achievement Between 50 And 74 Percentile [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								100.00%
Annual Shareholder Return Achievement Between 75 And 89 Percentile [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								110.00%
Annual Shareholder Return Achievement Greater Than Or Equal To 90 Percentile [Member]
Incentive Plan Payout Matrix Line Items [Abstract]
Incentive Compensation Plan Payout Percentage								120.00%
EPS Performance [Member]
Share Based Awards Allocation Line Items [Abstract]
3 Years Period Allocation Of Performance Units								50.00%
Annual Shareholder Return [Member]
Share Based Awards Allocation Line Items [Abstract]
3 Years Period Allocation Of Performance Units								50.00%