Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount before accumulated depreciation, depletion and amortization of 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, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
PROPERTY AND EQUIPMENT
Total property and equipment	$ 354,731us-gaap_PropertyPlantAndEquipmentGross		$ 355,481us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation and amortization	(132,813)		(127,797)
Property and equipment, net	221,918us-gaap_PropertyPlantAndEquipmentNet		227,684us-gaap_PropertyPlantAndEquipmentNet
Depreciation and amortization expense	7,479	3,839
Cell development costs
PROPERTY AND EQUIPMENT
Total property and equipment	120,344		120,878
Land and improvements
PROPERTY AND EQUIPMENT
Total property and equipment	33,258		33,002
Buildings and improvements
PROPERTY AND EQUIPMENT
Total property and equipment	72,544		74,518
Railcars
PROPERTY AND EQUIPMENT
Total property and equipment	17,375		17,375
Vehicles and other equipment
PROPERTY AND EQUIPMENT
Total property and equipment	99,664		98,877
Construction in progress
PROPERTY AND EQUIPMENT
Total property and equipment	$ 11,546		$ 10,831