Annual report pursuant to Section 13 and 15(d)

PROPERTY AND EQUIPMENT. (Details Narrative)

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PROPERTY AND EQUIPMENT. (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Depreciation expense $ 40,849 $ 38,651 $ 35,441
Capital Investment Activities [Member]      
Capitalized interest $ 1,170 $ 822 $ 1,307