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, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Guarantees [Abstract]        
Balance at beginning of period $ 331 $ 194 $ 408 $ 215
Expense (income) for product warranties 78 (3) 58 8
Product warranty claims paid (110) (17) (167) (49)
Balance at end of period $ 299 $ 174 $ 299 $ 174