Schedule of Amounts Recorded within Statement of Financial Position (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Pension Plans
Defined Benefit Plan Disclosure
Retirement plans assets	$ 9,342	$ 3,282
Accrued employees' compensation and withholdings	(2,924)	(2,810)
Retirement plans liabilities	(70,383)	(74,071)
Funded status	(63,965)	(73,599)
Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure
Accrued employees' compensation and withholdings	(1,042)	(1,322)
Retirement plans liabilities	(7,977)	(10,585)
Funded status	$ (9,019)	$ (11,907)