XML 77 R47.htm IDEA: XBRL DOCUMENT v2.4.0.6
Note F - Debt Facilities (Details) - Revolving credit facilities (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Apr. 30, 2013
Sep. 20, 2012
Apr. 30, 2012
Mar. 09, 2012
Revolving credit facilities [Abstract]        
Revolving credit facilities $ 145,000 $ 145,000   $ 125,000
Revolving credit facilities LIBOR + 2.5%      
Revolving credit facilities Mar. 31, 2015      
Revolving credit facilities $ 99,563   $ 77,900