3. PROPERTY AND EQUIPMENT (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Abstract]
Facilities and plant equipment	$ 184,064	$ 169,229
Land	2,570	2,570
Other equipment, vehicles and furniture	5,600	5,280
Construction in progress	5,007	4,014
Property, Plant and Equipment, Gross	197,241	181,093
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(42,047)	(30,684)
Property, Plant and Equipment, Net	$ 155,194	$ 150,409