Effective Rate Reflected in Provision for Income Taxes and Amounts Determined by Applying Statutory Federal Rate (Detail) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2015	Mar. 31, 2014
Reconciliation of Provision of Income Taxes [Line Items]
Statutory provision				$ 1,702	$ (52)
Foreign subsidiary				(798)	(1,009)
State taxes				336	(529)
Permanent differences				61	304
Prior year taxes				1,193	0
True up to prior year taxes				(226)	(158)
Valuation allowance				0	(234)
Increase in Uncertain Tax Positions				480	0
NOL Adjustments				319	209
Provision for income tax (benefit) expense	$ 1,600	$ 500	$ 900	$ 3,067	$ (1,469)