The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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Gross amount of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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FIXED ASSETS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
FIXED ASSETS
Total costs	$ 8,779		$ 8,779		$ 8,569
Less: accumulated depreciation and amortization	3,765		3,765		3,311
Total	5,014		5,014		5,258
Depreciation and amortization expense	34,722	34,491	69,100	68,916
Property, plant, and equipment excluding vessels
FIXED ASSETS
Depreciation and amortization expense	226	226	454	424
Vessel equipment
FIXED ASSETS
Total costs	3,248		3,248		3,043
Leasehold improvements
FIXED ASSETS
Total costs	3,823		3,823		3,823
Furniture and fixtures
FIXED ASSETS
Total costs	997		997		997
Computer equipment
FIXED ASSETS
Total costs	$ 711		$ 711		$ 706