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Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Thousands | Jan. 07, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Jan. 21, 2019 | Jul. 19, 2017 | Apr. 02, 2015 | Nov. 25, 2014
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Business Acquisition [Line Items] |  |  |  |  |  |  |
Payments for repurchase of redeemable noncontrolling interest | $ 10,000 |  |  |  |  |  |
Robtec |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Ownership percentage |  | 100.00% | 100.00% |  |  |  |
Robtec |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquired ownership percentage | 30.00% |  |  |  |  |  | 70.00%
Easyway |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquired ownership percentage |  | 100.00% |  | 30.00% | 5.00% | 65.00% |

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