Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2017

Retirement Benefits [Abstract]

Pension and Other Defined Contribution Retirement Plan Expenses

Pension and other defined contribution retirement plan expenses included the following components:

U.S. Plans	Three Months Ended June 30,						Six Months Ended June 30,
(DOLLARS IN THOUSANDS)	2017			2016			2017			2016
Service cost for benefits earned	$	698		$	772		$	1,395		$	1,543
Interest cost on projected benefit obligation	4,561			6,006			9,122			12,013
Expected return on plan assets	(9,246		)	(8,070		)	(18,492		)	(16,139		)
Net amortization and deferrals	1,793			1,385			3,585			2,772
Net periodic benefit cost	(2,194		)	93			(4,390		)	189
Defined contribution and other retirement plans	2,524			2,211			4,779			4,612
Total expense	$	330		$	2,304		$	389		$	4,801
Non-U.S. Plans	Three Months Ended June 30,						Six Months Ended June 30,
(DOLLARS IN THOUSANDS)	2017			2016			2017			2016
Service cost for benefits earned	$	5,610		$	3,863		$	11,220		$	7,638
Interest cost on projected benefit obligation	3,911			6,372			7,822			12,737
Expected return on plan assets	(12,334		)	(11,985		)	(24,668		)	(23,934		)
Net amortization and deferrals	3,988			3,286			7,977			6,550
Net periodic benefit cost	1,175			1,536			2,351			2,991
Defined contribution and other retirement plans	1,616			1,763			2,913			3,470
Total expense	$	2,791		$	3,299		$	5,264		$	6,461

Postretirement Benefits Other Than Pension Expenses

Expense recognized for postretirement benefits other than pensions included the following components:

	Three Months Ended June 30,						Six Months Ended June 30,
(DOLLARS IN THOUSANDS)	2017			2016			2017			2016
Service cost for benefits earned	$	221		$	214		$	442		$	429
Interest cost on projected benefit obligation	588			787			1,176			1,574
Net amortization and deferrals	(1,046		)	(1,355		)	(2,092		)	(2,710		)
Total postretirement benefit income	$	(237	)	$	(354	)	$	(474	)	$	(707	)