Annual report pursuant to Section 13 and 15(d)

Product Warranties (Details Textual)

v3.4.0.3
Product Warranties (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Product Warranties (Textual) [Abstract]    
Current portions of warranty reserve $ 229 $ 383
Long-term portions of the warranty reserve $ 207 $ 122
CSG [Member] | Minimum [Member]    
Product Liability Contingency [Line Items]    
Standard Product Warranty Description P1Y  
CSG [Member] | Maximum [Member]    
Product Liability Contingency [Line Items]    
Standard Product Warranty Description P7Y  
IBW [Member] | Minimum [Member]    
Product Liability Contingency [Line Items]    
Standard Product Warranty Description P1Y  
IBW [Member] | Maximum [Member]    
Product Liability Contingency [Line Items]    
Standard Product Warranty Description P5Y