Income Taxes - Additional Information (Detail) - USD ($)		3 Months Ended			12 Months Ended		48 Months Ended
	Mar. 31, 2016	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2013	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2013
Schedule Of Income Taxes [Line Items]
Possible additional federal and state income taxes estimated from the income tax assessment							$ 3,000,000
(Benefit) provision for income tax expense		$ 1,600,000	$ 500,000	$ 900,000	$ (259,000)	$ 3,067,000
Statutory federal rate					34.00%	34.00%
Income (loss) of foreign subsidiaries before taxes					$ (212,000)	$ 2,367,000
U.S. federal
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	$ 0	0			0
U.S. federal | Earliest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2011
U.S. federal | Latest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2015
States
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards, amount	$ 400,000	$ 400,000			$ 400,000
States | Earliest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2011
States | Latest Tax Year
Schedule Of Income Taxes [Line Items]
Open tax years	2015
Maximum
Schedule Of Income Taxes [Line Items]
Estimated income taxes non-current tax liability, penalties and interest recorded as income tax expense						$ 500,000