CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Accounts and notes receivable, allowances	$ 6,034	$ 2,419
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares, issued	67,913,265	67,176,996
Common stock, shares outstanding	67,913,265	67,176,996