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Long-Term Debt and Capital Lease Obligations (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Sep. 30, 2012
Debt Instrument [Line Items]    
Total long-term obligations $ 247,299 $ 221,510
Less current portion 30,969 21,679
Total long-term and capital lease obligations 216,330 199,831
Debt Premium 724 2,238
Debt premium, current 543 0
Debt premium, noncurrent 181 2,238
Recourse Debt [Member]
   
Debt Instrument [Line Items]    
Capital Lease Obligations 924 1,589
Debt Premium 0 0
Non Recourse Debt [Member] | 10% unsecured notes due 2013 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 503 1,766
Debt Premium 0 0
Stated interest rate 10.00%  
Non Recourse Debt [Member] | 15% unsecured notes due 2013 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 12,884 14,262
Debt Premium 244 1,334
Stated interest rate 15.00%  
Non Recourse Debt [Member] | 16% unsecured notes due 2013 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 0 5,248
Debt Premium 0 108
Stated interest rate 16.00%  
Non Recourse Debt [Member] | 10% unsecured notes due 2014 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 8,925 963
Debt Premium 0 0
Stated interest rate 10.00%  
Non Recourse Debt [Member] | 11% unsecured notes due 2014 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 110 0
Debt Premium 0 0
Stated interest rate 11.00%  
Non Recourse Debt [Member] | 9% unsecured notes due 2015 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 16,068 0
Debt Premium 0 0
Stated interest rate 9.00%  
Non Recourse Debt [Member] | 10% unsecured notes due 2015 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 418 427
Debt Premium 0 0
Stated interest rate 10.00%  
Non Recourse Debt [Member] | 15% secured notes due 2015 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 4,185 4,488
Debt Premium 381 597
Stated interest rate 15.00%  
Non Recourse Debt [Member] | 10% unsecured notes due 2016 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 121 123
Debt Premium 0 0
Stated interest rate 10.00%  
Domestic Line of Credit [Member] | Recourse Debt [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 140,900 130,000
Debt Premium 0 0
Maximum borrowing capacity 200,000  
Foreign Line of Credit [Member] | Non Recourse Debt [Member] | Secured foreign currency line of credit up to $4 million due 2014 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 1,207 2,629
Debt Premium 99 199
Maximum borrowing capacity 4,000  
Foreign Line of Credit [Member] | Non Recourse Debt [Member] | Secured foreign currency line of credit up to $19 million due 2015 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 6,281 16,073
Debt Premium 0 0
Maximum borrowing capacity 19,000  
Foreign Line of Credit [Member] | Non Recourse Debt [Member] | Secured foreign currency line of credit up to $23 million due 2017 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 22,822 11,263
Debt Premium 0 0
Maximum borrowing capacity 23,000  
Revolving Credit Facility [Member] | Non Recourse Debt [Member] | Consumer loans facility due 2017 [Member]
   
Debt Instrument [Line Items]    
Carrying Amount 31,951 32,679
Debt Premium $ 0 $ 0