Segment and Geographic Information - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 443,058	$ 447,046	$ 1,374,514	$ 1,331,993
Distribution
Disaggregation of Revenue [Line Items]
Net sales	$ 285,924	267,641	$ 859,379	817,965
Distribution | Minimum
Disaggregation of Revenue [Line Items]
Payment terms			30 days
Distribution | Maximum
Disaggregation of Revenue [Line Items]
Payment terms			90 days
Distribution | Over time
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	2.00%		2.00%
Aerospace
Disaggregation of Revenue [Line Items]
Net sales	$ 157,134	179,405	$ 515,135	514,028
Revenue, Net, Percentage	100.00%		100.00%
Aerospace | Time-and-materials Contract | Minimum
Disaggregation of Revenue [Line Items]
Payment terms			30 days
Aerospace | Time-and-materials Contract | Maximum
Disaggregation of Revenue [Line Items]
Payment terms			180 days
Aerospace | Fixed-price Contract | Minimum
Disaggregation of Revenue [Line Items]
Payment terms			30 days
Aerospace | Fixed-price Contract | Maximum
Disaggregation of Revenue [Line Items]
Payment terms			90 days
Aerospace | Over time
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	55.00%		51.00%
Aerospace | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	45.00%		49.00%
Bearings and Power Transmission [Member] | Distribution
Disaggregation of Revenue [Line Items]
Net sales	$ 143,191	132,895	$ 430,378	405,593
Automation, Control and Energy [Member] | Distribution
Disaggregation of Revenue [Line Items]
Net sales	85,329	80,166	256,466	247,001
Fluid Power [Member] | Distribution
Disaggregation of Revenue [Line Items]
Net sales	57,404	54,580	172,535	165,371
Military and Defense, other than fuzes [Member] | Aerospace
Disaggregation of Revenue [Line Items]
Net sales	45,798	47,820	145,297	145,476
Missile and Bomb Fuzes [Member] | Aerospace
Disaggregation of Revenue [Line Items]
Net sales	39,004	42,649	133,590	114,028
Commercial Aerospace and Other [Member] | Aerospace
Disaggregation of Revenue [Line Items]
Net sales	$ 72,332	$ 88,936	$ 236,248	$ 254,524