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Note G - Fair Value Measurements (Details) - Fair Value of Financial Instruments (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Apr. 30, 2014
Reported Value Measurement [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash $ 309 $ 289
Finance receivables, net 306,791 293,299
Accounts payable 12,424 8,542
Revolving credit facilities 94,220 97,032
Estimate of Fair Value Measurement [Member]
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash 309 289
Finance receivables, net 243,735 233,289
Accounts payable 12,424 8,542
Revolving credit facilities $ 94,220 $ 97,032