Defined Benefit Plans and Other Postretirement Benefits (Tables)

6 Months Ended

Jun. 24, 2016

Pension Plans

Pension and Other Postretirement Benefits

Schedule of components of the net periodic pension expense, non-qualified pension benefit expense and post-retirement benefit expense

	Three Months Ended
	June 24, 2016				June 26, 2015
	U.S.		Non-U.S.		U.S.		Non-U.S.
($ in thousands)	Pension Plans		Pension Plans		Pension Plans		Pension Plans
Service cost	$	671	$	1,378	$	863	$	880
Interest cost		2,954		10,487		2,810		10,905
Expected return on plan assets		(2,921)		(8,822)		(3,312)		(7,848)
Amortization of prior service credits		(188)		—		(191)		—
Recognized net actuarial loss		1,629		693		1,865		983
Net expense included in current income	$	2,145	$	3,736	$	2,035	$	4,920

	Six Months Ended
	June 24, 2016				June 26, 2015
	U.S.		Non-U.S.		U.S.		Non-U.S.
($ in thousands)	Pension Plans		Pension Plans		Pension Plans		Pension Plans
Service cost	$	1,342	$	2,755	$	1,725	$	1,759
Interest cost		5,908		20,964		5,620		21,799
Expected return on plan assets		(5,842)		(17,636)		(6,624)		(15,687)
Amortization of prior service credits		(376)		—		(383)		—
Recognized net actuarial loss		3,258		1,386		3,733		1,965
Net expense included in current income	$	4,290	$	7,469	$	4,071	$	9,836

Postretirement Benefit Plans

Pension and Other Postretirement Benefits

Schedule of components of the net periodic pension expense, non-qualified pension benefit expense and post-retirement benefit expense

	Three Months Ended
	June 24, 2016				June 26, 2015
	Non-Qualified		Postretirement		Non-Qualified		Postretirement
($ in thousands)	Pension Plan		Benefit Plans		Pension Plan		Benefit Plans
Service cost	$	—	$	206	$	—	$	242
Interest cost		13		497		15		524
Amortization of prior service (credits) costs		—		(96)		—		(7)
Recognized net actuarial loss (gain)		—		(3)		—		(2)
Net expense included in current income	$	13	$	604	$	15	$	757

	Six Months Ended
	June 24, 2016				June 26, 2015
	Non-Qualified		Postretirement		Non-Qualified		Postretirement
($ in thousands)	Pension Plan		Benefit Plans		Pension Plan		Benefit Plans
Service cost	$	—	$	413	$	—	$	483
Interest cost		27		994		29		1,049
Amortization of prior service (credits) costs		—		(192)		—		(15)
Recognized net actuarial loss (gain)		—		(6)		1		(3)
Net expense included in current income	$	27	$	1,209	$	30	$	1,514