Long-Term Debt (Tables)
 3 Months Ended
Jun. 30, 2012
Long-Term Debt [Abstract]  
Long-term Debt
Long-term debt at June 30, 2012, and March 31, 2012, consisted of the following:

(In thousands)
 
June 30, 2012
  
March 31, 2012
 
Subordinated manufacturing advance obligation, less debt discount of $28-June 30, 2012; $42-March 31, 2012
 $906  $1,013 
Current portion of long-term debt, less debt discount of $28-June 30, 2012; $40-March 31, 2012
  720   664 
Long-term debt less current portion, less debt discount
 $186  $349