Annual report pursuant to Section 13 and 15(d)

Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail)

v2.4.0.8
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Guarantees [Abstract]    
Balance at beginning of year $ 408 $ 215
Expense for product warranties 125 360
Product warranty claims paid (225) (167)
Balance at end of year $ 308 $ 408