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 3 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Mar. 31, 2013
Jun. 30, 2013
Kentrox [Member]
Jun. 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 $ 66 $ 92   $ 66 $ 92    
Restructuring and Related Cost, Expected Cost       276   424  
Unpaid balance of restructuring charges 66   6 66   6  
Recognized compensation and relocation cost           $ 149 $ 275