Annual report pursuant to Section 13 and 15(d)

Goodwill and Intagnible Assets (Details)

v2.4.0.8
Goodwill and Intagnible Assets (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Goodwill [Line Items]        
Gross goodwill       $ 11,541
Accumulated impairment       (11,032)
Accumulated currency traslation adjustment on Goodwill       292
Goodwill 0 30,697 0 801
Goodwill, Period Increase (Decrease)     0  
Goodwill, Acquired During Period   30,697 2,086  
Goodwill impairment (2,900)    (2,884)  
Goodwill, Translation Adjustments     (3)  
Kentrox [Member]
        
Goodwill [Line Items]        
Gross goodwill         
Accumulated impairment         
Accumulated currency traslation adjustment on Goodwill         
Goodwill    10,555      
Goodwill, Period Increase (Decrease)         
Goodwill, Acquired During Period   10,555    
Goodwill, Translation Adjustments         
CSI [Member]
        
Goodwill [Line Items]        
Gross goodwill         
Accumulated impairment         
Accumulated currency traslation adjustment on Goodwill         
Goodwill    20,142      
Goodwill, Period Increase (Decrease)         
Goodwill, Acquired During Period   20,142    
Goodwill, Translation Adjustments         
Noran Tel [Member]
        
Goodwill [Line Items]        
Gross goodwill       1,890
Accumulated impairment       (1,381)
Accumulated currency traslation adjustment on Goodwill       292
Goodwill 0   0 801
Goodwill, Period Increase (Decrease)     (798)  
Goodwill, Translation Adjustments     (3)  
Westell [Member]
        
Goodwill [Line Items]        
Gross goodwill       9,651
Accumulated impairment       (9,651)
Accumulated currency traslation adjustment on Goodwill         
Goodwill 0   0 0
Goodwill, Period Increase (Decrease)     798  
Goodwill, Acquired During Period     2,086  
Goodwill impairment     (2,884)  
Goodwill, Translation Adjustments