Noncontrolling Interests in Subsidiaries (Tables)

6 Months Ended

Jun. 30, 2018

Noncontrolling Interest [Abstract]

Noncontrolling Interests in Subsidiaries [Table Text Block]

Noncontrolling interests in the Company’s consolidated subsidiaries were as follows (in thousands):

	Noncontrolling Interests				June 30, 2018		December 31, 2017
Ocean Services:
SEA-Vista	49%				$	129,449	$	128,550
Inland Services:
Other	3.0	%	–	51.8%	833		977
Other	5.0	%	–	11.8%	180		151
					$	130,462	$	129,678