PROPERTY AND EQUIPMENT

12 Months Ended

Dec. 31, 2014

NOTE 9. PROPERTY AND EQUIPMENT

Property and equipment as of December 31, 2014 and 2013 consisted of the following:

$s in thousands	2014			2013
Cell development costs	$	120,878		$	77,348
Land and improvements		33,002			18,073
Buildings and improvements		74,518			59,101
Railcars		17,375			17,375
Vehicles and other equipment		98,877			42,859
Construction in progress		10,831			6,784

Total property and equipment		355,481			221,540
Accumulated depreciation and amortization		(127,797	)		(106,681	)

Property and equipment, net	$	227,684		$	114,859

Depreciation and amortization expense was $24.4 million, $14.8 million and $13.9 million for the years ended December 31, 2014, 2013 and 2012, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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