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Revenue (Disaggregation of revenue) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 533,005 | $ 623,427
Operating Segments [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 514,964 | 602,820
Operating Segments [Member] | Industrials Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 102,826 | 116,373
Operating Segments [Member] | Aerospace And Defense Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 119,200 | 103,889
Operating Segments [Member] | Medical Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 117,976 | 103,478
Operating Segments [Member] | Semi-Cap Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 82,720 | 66,021
Operating Segments [Member] | Computing Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 36,601 | 124,310
Operating Segments [Member] | Telecommunications Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 55,641 | 88,749
Elimination Of Intersegment Sales [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 18,041 | 20,607
Americas [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 314,396 | 392,058
Americas [Member] | Operating Segments [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 303,508 | 378,956
Americas [Member] | Operating Segments [Member] | Industrials Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 33,945 | 42,767
Americas [Member] | Operating Segments [Member] | Aerospace And Defense Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 113,012 | 96,337
Americas [Member] | Operating Segments [Member] | Medical Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 69,379 | 58,411
Americas [Member] | Operating Segments [Member] | Semi-Cap Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 30,449 | 28,400
Americas [Member] | Operating Segments [Member] | Computing Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 30,074 | 110,268
Americas [Member] | Operating Segments [Member] | Telecommunications Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 26,649 | 42,773
Americas [Member] | Elimination Of Intersegment Sales [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 10,888 | 13,102
Asia [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 171,609 | 187,409
Asia [Member] | Operating Segments [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 164,906 | 180,049
Asia [Member] | Operating Segments [Member] | Industrials Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 48,225 | 55,582
Asia [Member] | Operating Segments [Member] | Aerospace And Defense Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 0
Asia [Member] | Operating Segments [Member] | Medical Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 44,203 | 40,459
Asia [Member] | Operating Segments [Member] | Semi-Cap Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 37,292 | 24,743
Asia [Member] | Operating Segments [Member] | Computing Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 6,527 | 14,009
Asia [Member] | Operating Segments [Member] | Telecommunications Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 28,659 | 45,256
Asia [Member] | Elimination Of Intersegment Sales [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 6,703 | 7,360
Europe [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 47,000 | 43,960
Europe [Member] | Operating Segments [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 46,550 | 43,815
Europe [Member] | Operating Segments [Member] | Industrials Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 20,656 | 18,024
Europe [Member] | Operating Segments [Member] | Aerospace And Defense Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 6,188 | 7,552
Europe [Member] | Operating Segments [Member] | Medical Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 4,394 | 4,608
Europe [Member] | Operating Segments [Member] | Semi-Cap Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 14,979 | 12,878
Europe [Member] | Operating Segments [Member] | Computing Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 0 | 33
Europe [Member] | Operating Segments [Member] | Telecommunications Sector [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 333 | 720
Europe [Member] | Elimination Of Intersegment Sales [Member] |  |
Disaggregation Of Revenue [Line Items] |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 450 | $ 145

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