Provision for Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Current:
Federal	$ 1,353	$ 266
Foreign, state and other	215	579
Prior year federal and state with penalty & interest	881	234
Deferred:
Federal	947	1,089
Foreign, state and other	270	308
Provision for income taxes	$ 3,666	$ 2,476