Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION (Details)

v3.8.0.1
SEGMENT INFORMATION (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Segment Reporting Information [Line Items]          
Total revenues $ 61,508 $ 57,142 $ 179,165 $ 158,196  
Operating profit (loss) before depreciation and amortization 6,775 6,693 21,285 23,345  
Operating profit (loss) 3,965 4,128 13,319 16,169  
Profit (loss) before taxes 2,295 4,567 6,007 31,382 [1]  
Depreciation and amortization 2,810 2,565 7,966 7,176  
Capital expenditures 11,417 9,477 39,250 27,871  
Bargain purchase gain 0 0 0 11,549  
Goodwill and intangible assets, net 43,071   43,071   $ 44,467
Total assets 306,799   306,799   290,484
Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 58,030 52,115 165,945 143,661  
Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 3,478 5,027 13,220 14,535  
Operating Segments [Member] | Petrochemical [Member]          
Segment Reporting Information [Line Items]          
Total revenues 53,959 50,159 152,417 135,845  
Operating profit (loss) before depreciation and amortization 9,319 7,813 26,294 25,699  
Operating profit (loss) 7,735 6,366 21,610 21,488  
Profit (loss) before taxes 7,149 5,812 19,750 19,696 [1]  
Depreciation and amortization 1,584 1,447 4,684 4,211  
Capital expenditures 9,426 5,411 27,203 16,812  
Goodwill and intangible assets, net 0   0   0
Total assets 246,679   246,679   219,376
Operating Segments [Member] | Petrochemical [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 52,440 47,250 147,339 129,076  
Operating Segments [Member] | Petrochemical [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 1,519 2,909 5,078 6,769  
Operating Segments [Member] | Specialty Wax [Member]          
Segment Reporting Information [Line Items]          
Total revenues 7,549 6,983 26,748 22,351  
Operating profit (loss) before depreciation and amortization (587) 118 969 2,774  
Operating profit (loss) (1,795) (987) (2,264) (171)  
Profit (loss) before taxes (1,975) (1,063) [1] (2,534) 11,427 [1]  
Depreciation and amortization 1,208 1,105 3,233 2,945  
Capital expenditures 1,991 4,066 12,047 11,059  
Bargain purchase gain       11,500  
Goodwill and intangible assets, net 43,071   43,071   44,467
Total assets 116,494   116,494   113,676
Operating Segments [Member] | Specialty Wax [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 5,590 4,865 18,606 14,585  
Operating Segments [Member] | Specialty Wax [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 1,959 2,118 8,142 7,766  
Corporate [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Operating profit (loss) before depreciation and amortization (1,957) (1,238) (5,978) (5,128)  
Operating profit (loss) (1,975) (1,251) (6,027) (5,148)  
Profit (loss) before taxes (2,879) (182) (11,209) 259 [1]  
Depreciation and amortization 18 13 49 20  
Capital expenditures 0 0 0 0  
Goodwill and intangible assets, net 0   0   0
Total assets 94,747   94,747   106,428
Corporate [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Corporate [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 $ 0 0 $ 0  
Eliminations [Member]          
Segment Reporting Information [Line Items]          
Goodwill and intangible assets, net 0   0   0
Total assets $ (151,121)   $ (151,121)   $ (148,996)
[1] Profit (loss) before taxes for the specialty wax segment includes a bargain purchase gain of $11.5 million.