Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss from discontinued operations, net of taxes	$ 0	$ (1,817)
Loss from continuing operations before income taxes	(8,931)	13,978
Income tax expense (benefit)	239	(958)
(Loss) income from continuing operations	(8,692)	13,020
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss from continuing operations before income taxes	2,612	4,425
Income tax expense (benefit)	(1,018)	0
(Loss) income from continuing operations	1,594	4,425
Foreign Currency Translation [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Loss from discontinued operations, net of taxes	0	1,945
Pension and Other Postretirement Benefits [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net actuarial losses	$ 2,612	$ 2,480