Segment, Geographic Location and Customer Information - Net Sales by Geographic Location (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	$ 22,628	$ 20,170	$ 57,660	$ 58,004
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	17,163	14,730	39,352	37,792
England
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	654	1,230	2,643	3,798
Italy
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	2,128	966	6,987	4,594
Other European Countries
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	1,790	1,117	3,132	3,037
Pacific And Far East
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	468	603	1,615	2,161
Other International
Revenues From External Customers And Long Lived Assets [Line Items]
Net sales by geographic location	$ 425	$ 1,524	$ 3,931	$ 6,622