Revenue - Revenue by Category (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 366,660
Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	245,961
Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	120,699
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	182,488
Americas [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	96,527
Americas [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	85,961
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	118,815
Europe [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	94,140
Europe [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	24,675
Asia [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	63,293
Asia [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	54,380
Asia [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	8,913
Other Geographic Market [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	2,064
Other Geographic Market [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	914
Other Geographic Market [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	1,150
Engineered Components Products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	92,013
Engineered Components Products [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	92,013
Engineered Components Products [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Molding Solutions Products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	119,099
Molding Solutions Products [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	119,099
Molding Solutions Products [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Nitrogen Gas Products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	34,849
Nitrogen Gas Products [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	34,849
Nitrogen Gas Products [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Aerospace Original Equipment Manufacturing Products [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	80,695
Aerospace Original Equipment Manufacturing Products [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Aerospace Original Equipment Manufacturing Products [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	80,695
Aerospace Aftermarket Products and Services [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	40,004
Aerospace Aftermarket Products and Services [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	0
Aerospace Aftermarket Products and Services [Member] | Aerospace [Member]
Disaggregation of Revenue [Line Items]
Revenue from contract with customer	$ 40,004
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue transfered percent	90.00%
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue transfered percent	10.00%