Estimated Funded Status (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 12,607	$ 16,364
Service cost	98	89	1,268
Interest cost	122	163	290
Actuarial losses (gain)	(158)	367
Benefits paid	(1,072)	(3,329)
Foreign exchange impact	(1,742)	(1,047)
Benefit obligation at end of year	9,855	12,607	16,364
Fair value of plan assets at beginning of year	382	357
Return on plan assets	5	4
Employer contributions	9	8
Foreign exchange impact	(12)	13
Fair value of plan assets at end of year	384	382	357
Plan assets less than benefit obligation - Net amount recognized	$ (9,471)	$ (12,225)