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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
Nov. 05, 2014
Jan. 10, 2014
Apr. 30, 2014
Jul. 31, 2015
Jul. 31, 2014
Oct. 31, 2014
Feb. 09, 2014
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]              
Debt Covenant Fixed Charge Coverage Ratio Minimum       2.0      
Gains (Losses) on Extinguishment of Debt (in Dollars)         $ (1,155)    
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)       $ 980,988   $ 979,935  
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)       $ 841,056   $ 590,472  
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%  
Long-term Debt, Gross (in Dollars)       $ 130,852   $ 129,806  
Debt Instrument, Maturity Date       Nov. 01, 2021   Nov. 01, 2021  
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%  
Long-term Debt, Gross (in Dollars)       $ 53,136   $ 53,129  
Debt Instrument, Maturity Date       Nov. 01, 2021   Nov. 01, 2021  
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%  
Long-term Debt, Gross (in Dollars)       $ 577,000   $ 577,000  
Debt Instrument, Maturity Date       Oct. 15, 2020   Oct. 15, 2020  
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%  
Long-term Debt, Gross (in Dollars)       $ 220,000   $ 220,000  
Debt Instrument, Maturity Date       Nov. 15, 2020   Nov. 15, 2020  
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)       $ 799,900      
Cash Collateral for Borrowed Securities (in Dollars)       166,400      
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)       2,600   $ 5,600  
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)       43,500      
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)       147,100      
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)       $ 63,500      
The 7.0% 2019 Notes [Member] | Senior Notes [Member]              
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]              
Debt Instrument, Interest Rate, Stated Percentage   7.00%          
Debt Instrument, Face Amount (in Dollars)   $ 150,000          
Proceeds from Issuance of Long-term Debt (in Dollars)   $ 147,800          
The 7.0% 2019 Notes [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%          
The 7.0% 2019 Notes [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period One [Member] | Redemption With Net Cash Proceeds From Certain Equity Offerings [Member]              
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]              
Debt Instrument, Redemption Price, Percentage   107.00%          
The 7.0% 2019 Notes [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   103.50%          
The 7.0% 2019 Notes [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period Three [Member]              
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]              
Debt Instrument, Redemption Price, Percentage   101.75%          
The 7.0% 2019 Notes [Member] | Senior Notes [Member] | Debt Instrument, Redemption, Period Four [Member]              
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]              
Debt Instrument, Redemption Price, Percentage   100.00%          
The 7.0% 2019 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       7.00%   7.00%  
Long-term Debt, Gross (in Dollars)       $ 150,000   $ 150,000  
Debt Instrument, Maturity Date       Jan. 15, 2019   Jan. 15, 2019  
The 6.25% 2015 Notes [Member] | Senior Notes [Member]              
Note 11 - Senior Secured, Senior, Senior Amortizing, and Senior Exchangeable Notes (Details) [Line Items]              
Debt Instrument, Interest Rate, Stated Percentage             6.25%
Debt Instrument, Repurchased Face Amount (in Dollars)             $ 21,400
Gains (Losses) on Extinguishment of Debt (in Dollars)     $ (1,200)        
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%            
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%      
Long-term Debt, Gross (in Dollars)       $ 250,000      
Debt Instrument, Maturity Date       Nov. 01, 2019      
The 11.875% 2015 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       11.875%   11.875%  
Long-term Debt, Gross (in Dollars)       $ 60,737   $ 60,414  
Debt Instrument, Maturity Date       Oct. 15, 2015   Oct. 15, 2015  
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%  
Long-term Debt, Gross (in Dollars)       $ 172,744   $ 172,483  
Debt Instrument, Maturity Date       Jan. 15, 2016   Jan. 15, 2016  
Maximum [Member] | The 7.0% 2019 Notes [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 of Principal Amount Redeemed   35.00%