Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2017

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest [Abstract]

Schedule of accumulated other comprehensive income (loss)

Changes in the accumulated other comprehensive income or loss (“AOCI”) balance by component consisted of the following:

	Three months ended March 31, 2017
(in thousands)	Foreign Currency Translation			Pension Plan and SERP Liability			Total Accumulated Other Comprehensive (Loss) Income
Beginning period balance	$	(324,708	)	$	(38,993	)	$	(363,701	)
Other comprehensive (loss) before reclassifications		66,457			—			66,457
Amounts reclassified from AOCI		—			873			873
Net current-period other comprehensive (loss)		66,457			873			67,330
Ending period balance	$	(258,251	)	$	(38,120	)	$	(296,371	)
	Three months ended March 31, 2016
(in thousands)	Foreign Currency Translation			Pension Plan and SERP Liability			Total Accumulated Other Comprehensive (Loss) Income
Beginning period balance	$	(98,239	)	$	(31,994	)	$	(130,233	)
Other comprehensive (loss) income before reclassifications		40,818			—			40,818
Amounts reclassified from AOCI		—			666			666
Net current-period other comprehensive (loss) income		40,818			666			41,484
Ending period balance	$	(57,421	)	$	(31,328	)	$	(88,749	)