Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details Textual)

v3.3.0.814
Product Warranties (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2015
Mar. 31, 2015
Product Warranties (Textual) [Abstract]    
Current portions of warranty reserve $ 420 $ 383
Non-current portions of the warranty reserve $ 128 $ 122
CSG [Member] | Minimum [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description P1Y  
CSG [Member] | Maximum [Member]    
Product Warranties (Textual) [Abstract]    
Standard Product Warranty Description P7Y  
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