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EXCEL - IDEA: XBRL DOCUMENT - HI TECH PHARMACAL CO INCFinancial_Report.xls
10-Q - FORM 10-Q - HI TECH PHARMACAL CO INCd399017d10q.htm
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v2.4.0.6
Stock-Based Compensation (Details) (USD $)
3 Months Ended 6 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2012
Oct. 31, 2011
Schedule of stock option plans and employee stock purchase plan        
Stock-based compensation expense $ 1,041,000 $ 741,000 $ 1,826,000 $ 1,477,000
Cost of goods sold [Member]
       
Schedule of stock option plans and employee stock purchase plan        
Stock-based compensation expense 125,000 87,000 217,000 174,000
Selling, general and administrative expenses [Member]
       
Schedule of stock option plans and employee stock purchase plan        
Stock-based compensation expense 735,000 571,000 1,271,000 1,137,000
Research and product development costs [Member]
       
Schedule of stock option plans and employee stock purchase plan        
Stock-based compensation expense $ 181,000 $ 83,000 $ 338,000 $ 166,000