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Note E - Accrued Liabilities (Tables)
9 Months Ended
Jan. 31, 2016
Notes Tables  
Schedule of Accrued Liabilities [Table Text Block]
(In thousands)   January 31, 2016   April 30, 2015
Employee compensation   $ 5,171     $ 3,954  
Cash overdrafts (see Note B)     1,006       1,587  
Deferred sales tax (see Note B)     2,815       2,762  
Other     4,344       4,405  
Total   $ 13,336     $ 12,708