Components Of Net Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Deferred Tax Assets and Liabilities [Line Items]
Valuation allowance	$ 0	$ 0
Carry-forward losses of subsidiaries	9	22
Minimum alternate tax credit of subsidiaries	20,457	16,831
Property, plant and equipment	801	1,205
Accrued expenses and allowances	8,893	9,624
Total deferred tax assets	30,160	27,682
Provision for branch tax on dividend equivalent in India	(1,726)	(1,726)
Provision for tax on unrealized gains in India	(1,872)	(258)
Total deferred tax liabilities	(3,598)	(1,984)
Net deferred tax assets	$ 26,562	$ 25,698