Segment and Geographic Information Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Revenues	$ 1,875,425	$ 1,805,909	$ 1,808,376
Distribution
Disaggregation of Revenue [Line Items]
Revenues, Percentage	2.00%
Revenues	$ 1,139,431	1,080,965	1,106,322
Distribution | Bearings and Power Transmission
Disaggregation of Revenue [Line Items]
Revenues	552,537	536,143	548,736
Distribution | Automation, Control and Energy [Member]
Disaggregation of Revenue [Line Items]
Revenues	362,358	326,117	337,428
Distribution | Fluid Power [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 224,536	218,705	220,158
Aerospace
Disaggregation of Revenue [Line Items]
Revenues, Percentage	100.00%
Revenues	$ 735,994	724,944	702,054
Aerospace | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenues, Percentage	48.00%
Aerospace | Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenues, Percentage	52.00%
Aerospace | Military and Defense, other than fuzes [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 190,264	201,760	205,812
Aerospace | Missile and Bomb Fuzes [Member]
Disaggregation of Revenue [Line Items]
Revenues	195,751	184,640	164,187
Aerospace | Commercial Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 349,979	$ 338,544	$ 332,055
Minimum | Distribution
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	30
Maximum | Distribution
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	120
Time-and-materials Contract [Member] | Minimum | Aerospace
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	30
Time-and-materials Contract [Member] | Maximum | Aerospace
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	180
Fixed-price Contract [Member] | Minimum | Aerospace
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	30
Fixed-price Contract [Member] | Maximum | Aerospace
Disaggregation of Revenue [Line Items]
Revenue, Performance Obligation, Description of Payment Terms	90