6. PROPERTY AND EQUIPMENT (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property and equipment

	December 31,
	2015			2014
Facilities and plant equipment	$	501,800		$	190,714
Land		7,541			2,570
Other equipment, vehicles and furniture		9,084			7,641
Construction in progress		23,579			8,720
		542,004			209,645
Accumulated depreciation		(77,044	)		(54,343	)
	$	464,960		$	155,302