Subsequent Events (Notes)	3 Months Ended
Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Events [Text Block]	SUBSEQUENT EVENTS: Acquisition of Pentalver Transport Limited On May 3, 2017, the Company's subsidiary, GWI UK Acquisition Company Limited, purchased for cash all of the issued share capital of Pentalver Transport Limited (Pentalver) from a subsidiary of APM Terminals (a subsidiary of A P Møller-Maersk A/S) for £97.7 million (or approximately $126.2 million at the exchange rate on May 3, 2017). Headquartered in Southampton, U.K., Pentalver operates off-dock container terminals (most under long-term lease) strategically placed at each of the four major seaports of Felixstowe, Southampton, London Gateway and Tilbury, as well as an inland terminal located at Cannock, in the U.K. Midlands, near many of the nation’s largest distribution centers. In addition to providing storage for loaded and empty containers on over 100 acres of land, Pentalver also operates a trucking haulage service with more than 150 trucks, primarily providing daily service between the seaports of Felixstowe and Southampton and its inland terminal at Cannock. Pentalver also provides services related to container maintenance and repair (including refrigerated containers) and is one of the largest sellers of new and used containers in the U.K. Pentalver’s operations are complementary to those of the Company's Freightliner subsidiary, which is the largest provider of maritime container transportation by rail in the U.K. The logistics of maritime container transportation in the U.K. are highly competitive, whether by road, rail or short-sea, with a premium placed on timely, efficient and safe service. The Company expects that the Pentalver acquisition will enable it to (i) enhance its U.K. services by providing rail and road transportation solutions, as well as offering storage options at the ports and inland, and (ii) unlock efficiencies from shared services and enhanced asset utilization from Pentalver’s trucking fleet and Freightliner’s existing fleet of approximately 250 trucks that currently provide local collection and delivery haulage from Freightliner’s inland terminals. With approximately 600 employees, Pentalver will operate as part of the Company’s U.K./Europe Region.

SUBSEQUENT EVENTS:

Acquisition of Pentalver Transport Limited

On May 3, 2017, the Company's subsidiary, GWI UK Acquisition Company Limited, purchased for cash all of the issued share capital of Pentalver Transport Limited (Pentalver) from a subsidiary of APM Terminals (a subsidiary of A P Møller-Maersk A/S) for £97.7 million (or approximately $126.2 million at the exchange rate on May 3, 2017).

Headquartered in Southampton, U.K., Pentalver operates off-dock container terminals (most under long-term lease) strategically placed at each of the four major seaports of Felixstowe, Southampton, London Gateway and Tilbury, as well as an inland terminal located at Cannock, in the U.K. Midlands, near many of the nation’s largest distribution centers. In addition to providing storage for loaded and empty containers on over 100 acres of land, Pentalver also operates a trucking haulage service with more than 150 trucks, primarily providing daily service between the seaports of Felixstowe and Southampton and its inland terminal at Cannock. Pentalver also provides services related to container maintenance and repair (including refrigerated containers) and is one of the largest sellers of new and used containers in the U.K.

Pentalver’s operations are complementary to those of the Company's Freightliner subsidiary, which is the largest provider of maritime container transportation by rail in the U.K. The logistics of maritime container transportation in the U.K. are highly competitive, whether by road, rail or short-sea, with a premium placed on timely, efficient and safe service. The Company expects that the Pentalver acquisition will enable it to (i) enhance its U.K. services by providing rail and road transportation solutions, as well as offering storage options at the ports and inland, and (ii) unlock efficiencies from shared services and enhanced asset utilization from Pentalver’s trucking fleet and Freightliner’s existing fleet of approximately 250 trucks that currently provide local collection and delivery haulage from Freightliner’s inland terminals. With approximately 600 employees, Pentalver will operate as part of the Company’s U.K./Europe Region.