Summary of Significant Accounting Policies (Tables)

12 Months Ended

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