Pension and Non-pension Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2015

Defined Benefit Pension Plans and SERP [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

The components of our net pension expense, including the SERP, are as follows:

Three months ended June 30,	U.S. Plans						Non-U.S. Plans						Total
(dollars in thousands)	2015			2014			2015			2014			2015			2014
Service cost	$	1,022		$	807		$	762		$	579		$	1,784		$	1,386
Interest cost	3,649			3,819			1,107			1,422			4,756			5,241
Expected return on plan assets	(5,668		)	(5,585		)	(638		)	(624		)	(6,306		)	(6,209		)
Amortization of unrecognized:
Prior service cost	105			264			(61		)	58			44			322
Loss	1,759			787			409			259			2,168			1,046
Pension expense	$	867		$	92		$	1,579		$	1,694		$	2,446		$	1,786
Six months ended June 30,	U.S. Plans						Non-U.S. Plans						Total
(dollars in thousands)	2015			2014			2015			2014			2015			2014
Service cost	$	2,183		$	1,832		$	1,510		$	1,157		$	3,693		$	2,989
Interest cost	7,358			7,689			2,210			2,846			9,568			10,535
Expected return on plan assets	(11,330		)	(11,193		)	(1,236		)	(1,256		)	(12,566		)	(12,449		)
Amortization of unrecognized:
Prior service cost	209			529			(125		)	115			84			644
Loss	3,645			2,029			815			517			4,460			2,546
Pension expense	$	2,065		$	886		$	3,174		$	3,379		$	5,239		$	4,265

Non-Pension Postretirement Benefit Plans [Member]

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs [Table Text Block]

The provision for our non-pension postretirement benefit expense consists of the following:

Three months ended June 30,	U.S. Plans				Non-U.S. Plans					Total
(dollars in thousands)	2015		2014		2015			2014		2015		2014
Service cost	$	145	$	251	$	1		$	1	$	146	$	252
Interest cost	609		710		10			29		619		739
Amortization of unrecognized:
Prior service cost	35		35		—			—		35		35
Loss / (gain)	100		67		(24		)	—		76		67
Non-pension postretirement benefit expense	$	889	$	1,063	$	(13	)	$	30	$	876	$	1,093
Six months ended June 30,	U.S. Plans				Non-U.S. Plans					Total
(dollars in thousands)	2015		2014		2015			2014		2015		2014
Service cost	$	427	$	503	$	1		$	1	$	428	$	504
Interest cost	1,269		1,420		29			56		1,298		1,476
Amortization of unrecognized:
Prior service cost	70		70		—			—		70		70
Loss / (gain)	296		134		(24		)	—		272		134
Non-pension postretirement benefit expense	$	2,062	$	2,127	$	6		$	57	$	2,068	$	2,184