Employee Retirement and Deferred Compensation Plans Employee Retirement and Deferred Compensation Plans (Details Textual) (USD $)	9 Months Ended	12 Months Ended
	Jul. 31, 2011	Dec. 31, 2013	Oct. 31, 2013	Dec. 31, 2012	Oct. 31, 2012	Dec. 31, 2011	Oct. 31, 2011	Dec. 31, 2010	Oct. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Number of Unfunded Defined Benefit Retirement Plans			2
Normal retirement age			62
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate			4.01%		3.07%		4.06%
Company Discretionary Contribution Under Deferral Savings Plans		2.00%		2.00%		1.00%		1.00%
Defined Contribution Plan, Employer Matching Contribution, Percent	1.00%				2.00%
Defined Contribution Plan, Cost Recognized			$ 6,400,000		$ 5,000,000
Company Recognized Expense for One Plan							2,700,000
Accrued for obligations under the plan			32,136,000		34,319,000		29,766,000		26,037,000
Defined Benefit Plan Unfunded Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accrued for obligations under the plan			$ 20,400,000		$ 20,700,000
SERP Plan One [Member]
Defined Benefit Plan Disclosure [Line Items]
Time Period for Interests Vest			20 years
SERP Plan Two [Member]
Defined Benefit Plan Disclosure [Line Items]
Time Period for Interests Vest			15 years