Obligations and Funded Status (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in plan assets:
Fair value of plan assets at end of year	$ 611,284	$ 644,931
Amounts recognized in balance sheet consist of:
Pension liability	(15,681)	(25,069)
Domestic Plans
Change in benefit obligation:
Benefit obligation at beginning of year	615,361	568,243
Interest cost	23,996	26,522	28,454
Actuarial loss	(25,137)	54,885
Curtailments and other adjustments	3,850
Benefits paid	(34,649)	(34,289)
Benefit obligation at end of year	583,421	615,361	568,243
Change in plan assets:
Fair value of plan assets at beginning of year	605,892	567,373
Actual return on plan assets	(4,982)	71,182
Company contributions	1,540	1,626
Benefits paid	(34,649)	(34,289)
Fair value of plan assets at end of year	567,801	605,892	567,373
Funded status	(15,620)	(9,469)
Amounts recognized in balance sheet consist of:
Other Assets	598	7,981
Accrued pension liability-current	(1,519)	(1,574)
Pension liability	(14,699)	(15,876)
Accrued benefit liability	(16,218)	(17,450)
Net (Liability)/ Asset	(15,620)	(9,469)
Amounts recognized in accumulated comprehensive loss:
Net actuarial loss/ (gain)	92,407	85,984
Total before taxes	92,407	85,984
Plans with accumulated benefit obligation in excess of plan assets
Projected benefit obligation	583,421	615,361
Accumulated benefit obligation	583,421	615,361
Fair value of plan assets	567,801	605,892
TCN Plan
Change in benefit obligation:
Benefit obligation at beginning of year	48,009	40,147
Interest cost	1,867	1,843	2,379
Actuarial loss	(5,860)	6,441
Curtailments and other adjustments	(621)
Benefits paid	(2,999)	(422)
Benefit obligation at end of year	40,396	48,009	40,147
Change in plan assets:
Fair value of plan assets at beginning of year	39,039	34,075
Actual return on plan assets	6,943	4,886
Company contributions	500	500
Benefits paid	(2,999)	(422)
Fair value of plan assets at end of year	43,483	39,039	34,075
Funded status	3,087	(8,970)
Amounts recognized in balance sheet consist of:
Other Assets	3,087
Accrued pension liability-current		(500)
Pension liability		(8,470)
Accrued benefit liability		(8,970)
Net (Liability)/ Asset	3,087	(8,970)
Amounts recognized in accumulated comprehensive loss:
Net actuarial loss/ (gain)	(6,113)	6,738
Total before taxes	(6,113)	6,738
Plans with accumulated benefit obligation in excess of plan assets
Projected benefit obligation	40,396	48,009
Accumulated benefit obligation	40,396	48,009
Fair value of plan assets	$ 43,483	$ 39,039