Annual report pursuant to Section 13 and 15(d)

6. PROPERTY AND EQUIPMENT (Details Narrative)

v3.6.0.2
6. PROPERTY AND EQUIPMENT (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Depreciation expense $ 35,441 $ 23,524 $ 12,712
Asset impairment 0 1,970 0
Property and equpment, gross 577,613 $ 542,004  
Idled Facilities [Member]      
Depreciation expense     $ 699
Capital Investment Activities [Member]      
Capitalized interest $ 1,307