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Income Taxes (Tables)
 9 Months Ended
Jul. 31, 2012
Income Tax Disclosure [Abstract]  
Reconciliation of Company's effective tax rate from federal statutory rate
The tables below provide, for the periods indicated, reconciliations of the Company’s effective tax rate from the federal statutory tax rate (amounts in thousands).

 
Nine months ended July 31,
 
2012
 
2011
 
$
 
%*
 
$
 
%*
Federal tax provision (benefit) at statutory rate
18,268

 
35.0

 
(15,625
)
 
(35.0
)
State tax provision (benefit), net of federal provision (benefit)
2,205

 
4.2

 
(1,451
)
 
(3.3
)
Reversal of state tax provisions – finalization of audits
(1,782
)
 
(3.4
)
 
(19,273
)
 
(43.2
)
Reversal of accrual for uncertain tax positions
(18,073
)
 
(34.6
)
 
(30,827
)
 
(69.0
)
Valuation allowance – recognized
1,400

 
2.7

 
18,791

 
42.1

Valuation allowance – reversed
(31,164
)
 
(59.7
)
 
(23,123
)
 
(51.8
)
Accrued interest on anticipated tax assessments
2,600

 
5.0

 
2,799

 
6.3

Other
3,010

 
5.7

 
(686
)
 
(1.5
)
Tax benefit
(23,536
)
 
(45.1
)
 
(69,395
)
 
(155.4
)
 * Due to rounding, amounts may not add.
 
Three months ended July 31,
 
2012
 
2011
 
$
 
%*
 
$
 
%*
Federal tax provision at statutory rate
15,034

 
35.0

 
1,361

 
35.0

State tax, net of federal provision
1,815

 
4.2

 
126

 
3.2

Reversal of state tax provisions – finalization of audits
(1,782
)
 
(4.2
)
 
(16,933
)
 
(435.5
)
Decrease in unrecognized tax benefits
(277
)
 
(0.6
)
 

 

Reversal of accrual for uncertain tax positions
(12,794
)
 
(29.8
)
 
(12,873
)
 
(331.1
)
Valuation allowance – recognized
3,500

 
8.1

 


 


Valuation allowance – reversed
(27,847
)
 
(64.8
)
 
(10,846
)
 
(279.0
)
Accrued interest on anticipated tax assessments
650

 
1.5

 
1,174

 
30.2

Other
3,010

 
7.1

 
(229
)
 
(5.9
)
Tax benefit
(18,691
)
 
(43.5
)
 
(38,220
)
 
(983.1
)
Tax Benefits potential interest and penalties
Information as to the amounts recognized in its tax benefit, before reduction for applicable taxes and reversal of previously accrued interest and penalties, of potential interest and penalties in the nine-month periods and three-month periods ended July 31, 2012 and 2011, is set forth in the table below (amounts in thousands).
Recognized in statements of operations:
 
Nine-month period ended July 31, 2012
$
4,000

Nine-month period ended July 31, 2011
$
2,500

Three-month period ended July 31, 2012
$
1,000

Three-month period ended July 31, 2011
$
1,806
Tax Benefit Amount Accrued for Potential Interest and Penalties [Table Text Block]
The amounts accrued for potential interest and penalties at July 31, 2012 and October 31, 2011 are set forth in the table below (amounts in thousands).
Accrued at:
 
July 31, 2012
$
23,136

October 31, 2011
$
29,200
Reconciliation of change in gross unrecognized tax benefits
The table below provides, for the periods indicated, a reconciliation of the change in the Company's unrecognized tax benefits (amounts in thousands).
 
Nine months ended July 31,
 
Three months ended July 31,
 
2012
 
2011
 
2012
 
2011
Balance, beginning of period
$
104,669

 
$
160,446

 
$
99,824

 
$
141,392

Increase in benefit as a result of tax positions taken in prior years
4,000

 
5,943

 
1,000

 
3,443

(Decrease) increase in benefit as a result of resolution of uncertain tax positions


 
(17,954
)
 
3,723

 


Decrease in benefit as a result of lapse of statute of limitation
(28,764
)
 
(8,790
)
 
(24,642
)
 
(8,790
)
Decrease in benefit as a result of completion of tax audits
(1,782
)
 
(35,370
)
 
(1,782
)
 
(31,770
)
Balance, end of period
$
78,123

 
$
104,275

 
$
78,123

 
$
104,275