XML 11 R39.htm IDEA: XBRL DOCUMENT v2.4.0.8
7. STOCK- BASED COMPENSATION (Details 3) (USD $)
3 Months Ended 6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Stock-based compensation expense by line item        
Stock-based compensation expense $ 571,000 $ 563,000 $ 1,144,000 $ 1,128,000
Other information        
Income tax benefit recognized from allocation of share-based compensation expense 0 29,000 0 46,000
windfall tax benefits recognized 0 226,000 0 403,000
Unrecognized compensation costs 3,900,000   3,900,000  
Weighted average period of recognition of unrecognized compensation costs 2 years 1 month 21 days      
Cost of Sales [Member]
       
Stock-based compensation expense by line item        
Stock-based compensation expense 104,000 102,000 204,000 196,000
Research and Development Expense [Member]
       
Stock-based compensation expense by line item        
Stock-based compensation expense 248,000 232,000 489,000 490,000
Selling, General and Administrative Expenses [Member]
       
Stock-based compensation expense by line item        
Stock-based compensation expense $ 219,000 $ 229,000 $ 451,000 $ 442,000