CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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Operating Costs and Expenses [Abstract] | |||
Depreciation and amortization included in the cost of specialty petrochemical, product sales, and processing | $ 13,618 | $ 10,089 | $ 9,016 |
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- Definition Amount of expense for allocation of cost of tangible asset over its useful life directly used in production of good and rendering of service. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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