SEGMENT INFORMATION (Details) $ in Thousands |
3 Months Ended | 12 Months Ended | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017
USD ($)
|
Sep. 30, 2017
USD ($)
|
[2] |
Jun. 30, 2017
USD ($)
|
[3] |
Mar. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
Sep. 30, 2016
USD ($)
|
Jun. 30, 2016
USD ($)
|
Mar. 31, 2016
USD ($)
|
Dec. 31, 2017
USD ($)
Segment
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2015
USD ($)
|
||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||
Number of operating segments | Segment | 2 | |||||||||||||||||||
Net revenues | $ 65,978 | [1] | $ 61,508 | $ 62,115 | $ 55,542 | $ 54,203 | $ 57,142 | $ 48,854 | $ 52,200 | $ 245,143 | $ 212,399 | $ 241,976 | ||||||||
Operating profit (loss) before depreciation and amortization | 29,063 | 28,484 | ||||||||||||||||||
Operating profit (loss) | 18,102 | 18,707 | 36,041 | |||||||||||||||||
Profit (loss) before taxes | 10,850 | 29,932 | $ 28,362 | |||||||||||||||||
Depreciation and amortization | 10,961 | 9,777 | ||||||||||||||||||
Capital expenditures | 51,584 | 40,495 | ||||||||||||||||||
Goodwill and intangible assets, net | 42,606 | 44,467 | 42,606 | 44,467 | ||||||||||||||||
Total assets | 327,326 | 290,484 | 327,326 | 290,484 | ||||||||||||||||
Eliminations [Member] | ||||||||||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||
Goodwill and intangible assets, net | 0 | 0 | 0 | 0 | ||||||||||||||||
Total assets | (153,346) | (149,870) | (153,346) | (149,870) | ||||||||||||||||
Corporate [Member] | ||||||||||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||
Net revenues | 0 | 0 | ||||||||||||||||||
Operating profit (loss) before depreciation and amortization | (7,413) | (6,444) | ||||||||||||||||||
Operating profit (loss) | (7,475) | (6,488) | ||||||||||||||||||
Profit (loss) before taxes | (11,764) | (4,827) | ||||||||||||||||||
Depreciation and amortization | 62 | 44 | ||||||||||||||||||
Capital expenditures | 0 | 0 | ||||||||||||||||||
Goodwill and intangible assets, net | 0 | 0 | 0 | 0 | ||||||||||||||||
Total assets | 97,880 | 107,302 | 97,880 | 107,302 | ||||||||||||||||
Petrochemical [Member] | Operating Segments [Member] | ||||||||||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||
Net revenues | 210,381 | 182,028 | ||||||||||||||||||
Operating profit (loss) before depreciation and amortization | 36,511 | 31,885 | ||||||||||||||||||
Operating profit (loss) | 30,201 | 26,060 | ||||||||||||||||||
Profit (loss) before taxes | 27,852 | 24,084 | ||||||||||||||||||
Depreciation and amortization | 6,310 | 5,825 | ||||||||||||||||||
Capital expenditures | 37,569 | 22,948 | ||||||||||||||||||
Goodwill and intangible assets, net | 0 | 0 | 0 | 0 | ||||||||||||||||
Total assets | 265,213 | 219,376 | 265,213 | 219,376 | ||||||||||||||||
Specialty Wax [Member] | Operating Segments [Member] | ||||||||||||||||||||
Segment Reporting Information [Line Items] | ||||||||||||||||||||
Net revenues | 34,762 | 30,371 | ||||||||||||||||||
Operating profit (loss) before depreciation and amortization | (35) | 3,043 | ||||||||||||||||||
Operating profit (loss) | (4,624) | (865) | ||||||||||||||||||
Profit (loss) before taxes | (5,238) | 10,675 | ||||||||||||||||||
Depreciation and amortization | 4,589 | 3,908 | ||||||||||||||||||
Capital expenditures | 14,015 | 17,547 | ||||||||||||||||||
Goodwill and intangible assets, net | 42,606 | 44,467 | 42,606 | 44,467 | ||||||||||||||||
Total assets | $ 117,579 | $ 113,676 | $ 117,579 | $ 113,676 | ||||||||||||||||
|