Quarterly report pursuant to Section 13 or 15(d)

Product Warranties (Details Textual)

v2.4.0.6
Product Warranties (Details Textual) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2011
Mar. 31, 2012
Dec. 31, 2012
Maximum [Member]
Product Warranties (Textual) [Abstract]          
Current portions of warranty reserve $ 150     $ 110  
Long-term portions of the warranty reserve 106     133  
Basic limited warranty maximum range         7 years
Specific pre-acquisition ANTONE product warranty in excess of acquired limit 0 0 0    
ANTONEStandardProductWarrantyAccrual 74        
Indemnification receivable from sellers of ANTONE $ 303