Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2013

Property, Plant and Equipment by Classification

The following table sets forth the Company’s property, plant and equipment by classification (in thousands).

		March 31,			December 31,
	Useful Life	2013			2012
Construction in progress	—	$	58,503		$	57,185
Plant machinery and equipment	10 years		11,030			11,030
Site improvements	10 years		7,007			7,007
Lab equipment, furniture and fixtures and vehicles	5 years		6,111			5,553
Demonstration plant	2 years		3,597			3,597
Buildings	10 years		2,543			2,543
Computer, office equipment and software	3 years		1,412			1,411
Leasehold improvements, pilot plant, land and support equipment	0 - 5 years		2,080			2,069
Total property, plant and equipment			92,283			90,395
Less accumulated depreciation and amortization			(14,151	)		(13,302	)
Property, plant and equipment, net		$	78,132		$	77,093