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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Statement of Financial Position [Abstract]    
Accounts and notes receivable, allowance for doubt accounts $ 1,129 $ 1,097
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock shares authorized 300,000,000 300,000,000
Preferred stock, shares issued 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 3,000,000,000 3,000,000,000
Common stock, shares issued 290,537,612 302,225,923
Common Stock, Shares, Outstanding 290,537,612 302,225,923