Accounting Policies and Basis of Presentation - Narrative (Details) crane in Thousands	6 Months Ended
Jun. 30, 2020 crane segment
Accounting Policies [Abstract]
Period of providing high-quality, customer-focused products and support services	117 years
Number of cranes serviced \| crane	149
Number of reportable segments \| segment	3

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration