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 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Segment Reporting Information [Line Items]          
Total revenues $ 68,106 $ 62,115 $ 139,847 $ 117,657  
Operating profit (loss) before depreciation and amortization 6,425 7,730 13,060 14,510  
Operating profit (loss) 3,397 5,162 7,006 9,354  
Profit (loss) before taxes 2,811 1,164 5,753 3,712  
Depreciation and amortization 3,028 2,568 6,054 5,156  
Capital expenditures 4,406 13,952 15,434 27,833  
Trade receivables, net 26,467   26,467   $ 25,779
Goodwill and intangible assets, net 41,675   41,675   42,606
Total assets 333,628   333,628   327,326
Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 63,569 57,016 130,268 107,915  
Trade receivables, net 24,016   24,016   22,882
Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 4,537 5,099 9,579 9,742  
Trade receivables, net 2,451   2,451   2,897
Operating Segments [Member] | Petrochemical [Member]          
Segment Reporting Information [Line Items]          
Total revenues 57,820 52,579 120,133 98,458  
Operating profit (loss) before depreciation and amortization 6,095 8,761 14,488 16,975  
Operating profit (loss) 4,440 7,217 11,119 13,875  
Profit (loss) before taxes 3,859 6,598 9,913 12,601  
Depreciation and amortization 1,655 1,544 3,369 3,100  
Capital expenditures 3,529 9,021 13,812 17,777  
Goodwill and intangible assets, net 0   0   0
Total assets 279,161   279,161   265,213
Operating Segments [Member] | Petrochemical [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 56,135 50,508 116,420 94,899  
Trade receivables, net 20,377   20,377   20,211
Operating Segments [Member] | Petrochemical [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 1,685 2,071 3,713 3,559  
Trade receivables, net 671   671   983
Operating Segments [Member] | Specialty Wax [Member]          
Segment Reporting Information [Line Items]          
Total revenues 10,286 9,536 19,881 19,199  
Operating profit (loss) before depreciation and amortization 1,164 810 1,554 1,555  
Operating profit (loss) (201) (198) (1,115) (469)  
Profit (loss) before taxes (506) (269) (1,687) (559)  
Depreciation and amortization 1,365 1,008 2,669 2,024  
Capital expenditures 877 4,931 1,622 10,056  
Goodwill and intangible assets, net 41,675   41,675   42,606
Total assets 115,696   115,696   117,579
Operating Segments [Member] | Specialty Wax [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 7,434 6,508 13,817 13,016  
Trade receivables, net 3,639   3,639   2,671
Operating Segments [Member] | Specialty Wax [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 2,852 3,028 6,064 6,183  
Trade receivables, net 1,780   1,780   1,914
Corporate [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Operating profit (loss) before depreciation and amortization (834) (1,841) (2,982) (4,020)  
Operating profit (loss) (842) (1,857) (2,998) (4,052)  
Profit (loss) before taxes (542) (5,165) (2,473) (8,330)  
Depreciation and amortization 8 16 16 32  
Capital expenditures 0 0 0 0  
Goodwill and intangible assets, net 0   0   0
Total assets 92,857   92,857   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 0 0 (167) 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 (154,086)   (154,086)   (153,346)
Eliminations [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 31 0  
Trade receivables, net 0   0   0
Eliminations [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 $ 0 (198) $ 0  
Trade receivables, net $ 0   $ 0   $ 0