Components of Income (Loss) Before Income Tax Expense (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Schedule of Income Before Income Tax [Line Items]
Income before Income Tax Expense	$ 59,797	[1]	$ 30,642	[1]	$ 25,648	[1]
UNITED STATES
Schedule of Income Before Income Tax [Line Items]
Income before Income Tax Expense	45,226		37,681		30,091
Non-U.S.
Schedule of Income Before Income Tax [Line Items]
Income before Income Tax Expense	$ 14,571		$ (7,039)		$ (4,443)

[1] From continuing operations, net of Noncontrolling Interest from continuing operations.