Fixed Assets

6 Months Ended

Jun. 30, 2013

Fixed Assets And Asset Retirement Obligations [Abstract]

Fixed Assets And Asset Retirement Obligations

3. Fixed Assets

Fixed Assets

Fixed assets consisted of the following:

	June 30, 2013			December 31, 2012
Pipelines and related assets	$	261,049		$	226,831
Machinery and equipment	102,948			87,502
Transportation equipment	19,908			21,170
Marine vessels	297,951			298,054
Land, buildings and improvements	16,411			15,606
Office equipment, furniture and fixtures	5,125			4,964
Construction in progress	109,663			52,541
Other	20,096			16,557
Fixed assets, at cost	833,151			723,225
Less: Accumulated depreciation	(177,112		)	(157,944		)
Net fixed assets	$	656,039		$	565,281

Our depreciation expense for the periods presented was as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Depreciation expense	$	11,070	$	9,549	$	21,565	$	18,044