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 9 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Dec. 31, 2013
Kentrox [Member]
Dec. 31, 2013
Kentrox [Member]
Dec. 31, 2012
Noran Tel Restructuring [Member]
Mar. 31, 2013
Noran Tel Restructuring [Member]
Restructuring Charge (Textual) [Abstract]                  
Restructuring $ 38 $ 0 $ 273 $ 149   $ 38 $ 273 $ 149  
Restructuring and Related Cost, Expected Cost             276   424
Unpaid balance of restructuring charges $ 77   $ 77   $ 6 $ 77 $ 77