Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details Textual)

v2.4.0.8
Product Warranties (Details Textual) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Sep. 30, 2014
Mar. 31, 2014
Sep. 30, 2014
CSG [Member]
Minimum [Member]
Sep. 30, 2014
CSG [Member]
Maximum [Member]
Sep. 30, 2014
IBW [Member]
Minimum [Member]
Sep. 30, 2014
IBW [Member]
Maximum [Member]
Product Warranties (Textual) [Abstract]            
Standard Product Warranty Description     P1Y P7Y P1Y P5Y
Current portions of warranty reserve $ 536 $ 286        
Non-current portions of the warranty reserve $ 130 $ 42