Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details Textual)

v3.5.0.2
Product Warranties (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2016
Mar. 31, 2016
Product Warranties (Textual) [Abstract]    
Current portions of warranty reserve $ 225 $ 229
Non-current portions of the warranty reserve $ 214 $ 207
IBW [Member] | Minimum [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description P1Y  
IBW [Member] | Maximum [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description P5Y  
ISMS [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description one  
CNS [Member] | Minimum [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description P1Y  
CNS [Member] | Maximum [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description P7Y