Annual report pursuant to Section 13 and 15(d)

Segment Information (Details Textual)

v2.4.0.6
Segment Information (Details Textual)
12 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Westell [Member]
   
Segment Information (Textual) [Abstract]    
Segment received resource costs 72.00% 38.00%
CNS [Member]
   
Segment Information (Textual) [Abstract]    
Segment received resource costs 28.00% 62.00%