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Note G - Fair Value Measurements (Detail) - Fair value of financial instruments (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2012
Apr. 30, 2012
Carrying (Reported) Amount, Fair Value Disclosure [Member]
   
Cash $ 400 $ 276
Finance receivables, net 268,811 251,103
Accounts payable 7,874 7,352
Revolving credit facilities 91,256 77,900
Portion at Fair Value, Fair Value Disclosure [Member]
   
Cash 400 276
Finance receivables, net 212,030 198,084
Accounts payable 7,874 7,352
Revolving credit facilities $ 91,256 $ 77,900