Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charge (Details Textual)

v2.4.0.8
Restructuring Charge (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Mar. 31, 2013
Sep. 30, 2013
Kentrox [Member]
Sep. 30, 2013
Kentrox [Member]
Sep. 30, 2012
Noran Tel Restructuring [Member]
Sep. 30, 2012
Noran Tel Restructuring [Member]
Mar. 31, 2013
Noran Tel Restructuring [Member]
Mar. 31, 2012
Noran Tel Restructuring [Member]
Restructuring Charge (Textual) [Abstract]                      
Restructuring $ 169 $ 57 $ 235 $ 149   $ 169 $ 235 $ 57 $ 149    
Restructuring and Related Cost, Expected Cost             276     424  
Unpaid balance of restructuring charges 95   95   6 95 95        
Recognized compensation and relocation cost                   $ 149 $ 275