Pensions and Other Postretirement Benefits (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Apr. 04, 2020
Defined Benefit Pension Plans [Member] | U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	$ 0	$ 0
Interest cost	254	342
Expected return on plan assets	0	0
Amortization of prior service cost (credit)	36	36
Amortization of losses (gains)	447	298
Curtailment and settlement losses	0	0
Net periodic benefit cost	737	676
Defined Benefit Pension Plans [Member] | Non-U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	1,190	1,074
Interest cost	754	924
Expected return on plan assets	(417)	(495)
Amortization of prior service cost (credit)	51	30
Amortization of losses (gains)	1,884	1,592
Curtailment and settlement losses	199	229
Net periodic benefit cost	3,661	3,354
Other Postretirement Benefits [Member] | U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	25	28
Interest cost	41	59
Amortization of losses (gains)	13	7
Net periodic benefit cost	79	94
Other Postretirement Benefits [Member] | Non-U.S. Plans [Member]
Components of net periodic pension cost [Abstract]
Net service cost	71	69
Interest cost	11	15
Amortization of losses (gains)	29	31
Net periodic benefit cost	$ 111	$ 115