Fixed Assets

6 Months Ended

Jun. 30, 2014

Fixed Assets And Asset Retirement Obligations [Abstract]

Fixed Assets And Asset Retirement Obligations

5. Fixed Assets

Fixed Assets

Fixed assets consisted of the following:

	June 30, 2014			December 31, 2013
Pipelines and related assets	$	421,319		$	338,920
Machinery and equipment	260,457			173,092
Transportation equipment	18,535			19,140
Marine vessels	585,933			554,679
Land, buildings and improvements	31,912			30,170
Office equipment, furniture and fixtures	5,537			5,633
Construction in progress	195,712			183,037
Other	32,705			23,303
Fixed assets, at cost	1,552,110			1,327,974
Less: Accumulated depreciation	(227,838		)	(199,230		)
Net fixed assets	$	1,324,272		$	1,128,744

Our depreciation expense for the periods presented was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Depreciation expense	$	16,409	$	11,067	$	31,686	$	21,558