Quarterly report pursuant to Section 13 or 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
3 Months Ended 6 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Guarantees [Abstract]        
Balance at beginning of period $ 373 $ 331 $ 308 $ 408
Expense for product warranties 40 78 137 58
Product warranty claims paid (66) (110) (98) (167)
Balance at end of period $ 347 $ 299 $ 347 $ 299