Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

At December 31, 2016 and 2015, property, plant and equipment consisted of the following:

	Depreciable Lives	2016		2015
Land	—	$	20,679	$	23,931
Improvements to land and buildings	10-25 years	135,852		159,160
Storage equipment	5-50 years	168,839		191,095
Marine vessels	4-25 years	181,659		257,858
Operating plant and equipment	3-50 years	620,303		631,728
Base Gas	—	43,799		43,799
Furniture, fixtures and other equipment	3-20 years	19,034		4,375
Transportation equipment	3-7 years	1,738		2,237
Construction in progress		32,374		73,631
		$	1,224,277	$	1,387,814