Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION (Details)

v3.10.0.1
SEGMENT INFORMATION (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Segment Reporting Information [Line Items]          
Total revenues $ 73,416 $ 61,508 $ 213,263 $ 179,165  
Operating profit (loss) before depreciation and amortization 4,330 6,775 17,390 21,285  
Operating profit (loss) 310 3,965 7,316 13,319  
Profit (loss) before taxes (2,082) 2,295 3,671 6,007  
Depreciation and amortization 4,018 2,810 10,072 7,966  
Capital expenditures 3,656 11,417 19,090 39,250  
Trade receivables, net 29,787   29,787   $ 25,779
Goodwill and intangible assets, net 41,210   41,210   42,606
Total assets 334,749   334,749   327,326
Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 68,613 58,030 198,881 165,945  
Trade receivables, net 26,496   26,496   22,882
Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 4,803 3,478 14,382 13,220  
Trade receivables, net 3,291   3,291   2,897
Operating Segments [Member] | Petrochemical [Member]          
Segment Reporting Information [Line Items]          
Total revenues 63,731 53,959 183,863 152,417  
Operating profit (loss) before depreciation and amortization 6,167 9,319 20,655 26,294  
Operating profit (loss) 3,516 7,735 14,635 21,610  
Profit (loss) before taxes 2,561 7,149 12,474 19,750  
Depreciation and amortization 2,651 1,584 6,020 4,684  
Capital expenditures 2,562 9,426 16,374 27,203  
Goodwill and intangible assets, net 0   0   0
Total assets 282,094   282,094   265,213
Operating Segments [Member] | Petrochemical [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 61,675 52,440 178,094 147,339  
Trade receivables, net 22,600   22,600   20,211
Operating Segments [Member] | Petrochemical [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 2,056 1,519 5,769 5,078  
Trade receivables, net 1,165   1,165   983
Operating Segments [Member] | Specialty Wax [Member]          
Segment Reporting Information [Line Items]          
Total revenues 9,737 7,549 29,618 26,748  
Operating profit (loss) before depreciation and amortization 415 (587) 1,969 969  
Operating profit (loss) (936) (1,795) (2,051) (2,264)  
Profit (loss) before taxes (1,239) (1,975) (2,926) (2,534)  
Depreciation and amortization 1,351 1,208 4,020 3,233  
Capital expenditures 1,094 1,991 2,716 12,047  
Goodwill and intangible assets, net 41,210   41,210   42,606
Total assets 115,146   115,146   117,579
Operating Segments [Member] | Specialty Wax [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 6,938 5,590 20,755 18,606  
Trade receivables, net 3,896   3,896   2,671
Operating Segments [Member] | Specialty Wax [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 2,799 1,959 8,863 8,142  
Trade receivables, net 2,126   2,126   1,914
Corporate [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Operating profit (loss) before depreciation and amortization (2,252) (1,957) (5,234) (5,978)  
Operating profit (loss) (2,270) (1,975) (5,268) (6,027)  
Profit (loss) before taxes (3,404) (2,879) (5,877) (11,209)  
Depreciation and amortization 16 18 32 49  
Capital expenditures 0 0 0 0  
Goodwill and intangible assets, net 0   0   0
Total assets 91,647   91,647   97,880
Corporate [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Trade receivables, net 0   0   0
Corporate [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Trade receivables, net 0   0   0
Eliminations [Member]          
Segment Reporting Information [Line Items]          
Total revenues (52) 0 (218) 0  
Operating profit (loss) before depreciation and amortization 0 0 0 0  
Operating profit (loss) 0 0 0 0  
Profit (loss) before taxes 0 0 0 0  
Depreciation and amortization 0 0 0 0  
Capital expenditures 0 0 0 0  
Goodwill and intangible assets, net 0   0   0
Total assets (154,138)   (154,138)   (153,346)
Eliminations [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 32 0  
Trade receivables, net 0   0   0
Eliminations [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues (52) $ 0 (250) $ 0  
Trade receivables, net $ 0   $ 0   $ 0