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
Jun. 30, 2014
Jun. 30, 2013
Guarantees [Abstract]    
Balance at beginning of period $ 308 $ 408
Expense (Income) for product warranties 97 (20)
Product warranty claims paid (32) (57)
Balance at end of period $ 373 $ 331