Annual report pursuant to Section 13 and 15(d)

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

v2.4.1.9
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Guarantees [Abstract]    
Balance at beginning of year $ 308us-gaap_ProductWarrantyAccrual $ 408us-gaap_ProductWarrantyAccrual
Expense for product warranties 930us-gaap_ProductWarrantyExpense 125us-gaap_ProductWarrantyExpense
Product warranty claims paid (585)us-gaap_StandardProductWarrantyAccrualPayments (225)us-gaap_StandardProductWarrantyAccrualPayments
Balance at end of year $ 653us-gaap_ProductWarrantyAccrual $ 308us-gaap_ProductWarrantyAccrual