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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
Accounting Policies [Abstract] |
Schedule of Estimated Useful Lives of Other Intangible Assets | Other intangible assets are amortized straight-line over the following estimated useful lives:
|  | Useful lives
Patents |  | 20 years
Engineering drawings |  | 15 years
Customer relationships |  | 10 years
Schedule of Estimated Useful Lives of Property, Plant and Equipment | Property, plant and equipment are depreciated over the following estimated useful lives:
|  | Years
Building and improvements |  | 2 - 40
Machinery, equipment and tooling |  | 2 - 20
Furniture and fixtures |  | 3 - 20
Computer hardware and software |  | 2 - 10
Rental cranes |  | 5 - 15

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