Effective Rate Reflected in Provision for Income Taxes and Amounts Determined by Applying Statutory Federal Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of Provision of Income Taxes [Line Items]
Statutory provision	$ (52)	$ 3,283
Foreign subsidiary	(1,009)	(2,626)
State taxes	(529)	366
Permanent differences	304	716
Prior year taxes	0	897
True up AMT Credit	0	898
True up to prior year taxes	(158)	56
Valuation allowance	(234)	0
Expiration of Stock Options and Warrants	209	0
Other, net	0	76
Provision for income tax (benefit) expense	$ (1,469)	$ 3,666