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Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Jan. 15, 2016
Nov. 05, 2014
Jan. 31, 2016
Jan. 31, 2015
Jul. 31, 2015
Oct. 31, 2015
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Covenant Fixed Charge Coverage Ratio Minimum     2.0      
Repayments of Senior Debt (in Dollars)     $ 175,040 $ 2,062    
Series A Preferred Stock [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Preferred Stock, Dividend Rate, Percentage     7.625%      
Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Long-term Debt, Gross (in Dollars)     $ 981,716     $ 981,346
Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Long-term Debt, Gross (in Dollars)     $ 607,575     $ 780,319
The 5.0% 2021 Notes [Member] | Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     5.00%     5.00%
Debt Instrument, Maturity Date     Nov. 01, 2021     Nov. 01, 2021
Long-term Debt, Gross (in Dollars)     $ 131,575     $ 131,207
The 2.0% 2021 Notes [Member] | Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     2.00%     2.00%
Debt Instrument, Maturity Date     Nov. 01, 2021     Nov. 01, 2021
Long-term Debt, Gross (in Dollars)     $ 53,141     $ 53,139
The 7.25% 2020 Notes [Member] | Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     7.25%     7.25%
Debt Instrument, Maturity Date     Oct. 15, 2020     Oct. 15, 2020
Long-term Debt, Gross (in Dollars)     $ 577,000     $ 577,000
The 9.125% 2020 Notes [Member] | Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     9.125%     9.125%
Debt Instrument, Maturity Date     Nov. 15, 2020     Nov. 15, 2020
Long-term Debt, Gross (in Dollars)     $ 220,000     $ 220,000
The 7.25% 2020 Notes and 9.125% 2020 Notes [Member] | Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Collateral Amount (in Dollars)     628,400      
Cash Collateral for Borrowed Securities (in Dollars)     112,600      
The 7.25% 2020 Notes and 9.125% 2020 Notes [Member] | Senior Secured Notes [Member] | Restricted Cash [Member] | Letter of Credit [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Cash Collateral for Borrowed Securities (in Dollars)     2,500     $ 2,600
The 2.0% 2021 Notes Member and 5.0% 2021 Notes [Member] | Senior Secured Notes [Member] | Cash and Cash Equivalents Collateral [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Collateral Amount (in Dollars)     37,000      
The 2.0% 2021 Notes Member and 5.0% 2021 Notes [Member] | Senior Secured Notes [Member] | Real Estate [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Collateral Amount (in Dollars)     167,300      
The 2.0% 2021 Notes Member and 5.0% 2021 Notes [Member] | Senior Secured Notes [Member] | Secured Group [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures (in Dollars)     $ 64,700      
8.0% Senior Notes Due 2019 [Member] | Senior Secured Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     8.00%      
8.0% Senior Notes Due 2019 [Member] | Senior Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage   8.00% 8.00%      
Debt Instrument, Face Amount (in Dollars)   $ 250,000        
Proceeds from Issuance of Long-term Debt (in Dollars)   $ 245,700        
8.0% Senior Notes Due 2019 [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period One [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Redemption Price, Percentage   100.00%        
8.0% Senior Notes Due 2019 [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period Two [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Redemption Price, Percentage   100.00%        
8.0% Senior Notes Due 2019 [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     8.00%     8.00%
Debt Instrument, Maturity Date     Nov. 01, 2019     Nov. 01, 2019
Long-term Debt, Gross (in Dollars)     $ 250,000     $ 250,000
The 6.25% 2016 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 6.25%   6.25%     6.25%
Debt Instrument, Maturity Date     Jan. 15, 2016   Jan. 15, 2016 Jan. 15, 2016
Repayments of Senior Debt (in Dollars) $ 172,700          
Long-term Debt, Gross (in Dollars)           $ 172,744
The 7.5% 2016 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     7.50%     7.50%
Debt Instrument, Maturity Date     May 15, 2016     May 15, 2016
Long-term Debt, Gross (in Dollars)     $ 86,532     $ 86,532
The 8.625% 2017 Notes [Member] | Unsecured Senior Notes Excluding Senior Amortizing Notes And Senior Exchangeable Notes [Member]            
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     8.625%     8.625%
Debt Instrument, Maturity Date     Jan. 15, 2017     Jan. 15, 2017
Long-term Debt, Gross (in Dollars)     $ 121,043     $ 121,043