Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION (Details)

v3.7.0.1
SEGMENT INFORMATION (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Segment Reporting Information [Line Items]          
Total revenues $ 62,115 $ 48,854 $ 117,657 $ 101,054  
Operating profit (loss) before depreciation and amortization 7,730 8,111 14,510 16,652  
Operating profit (loss) 5,162 5,896 9,354 12,041  
Profit (loss) before taxes 1,164 15,944 3,712 26,815  
Depreciation and amortization 2,568 2,215 5,156 4,611  
Capital expenditures 13,952 10,792 27,833 18,394  
Bargain purchase gain 0 11,549 0 11,549  
Goodwill and intangible assets, net 43,536   43,536   $ 44,467
Total assets 301,142   301,142   290,484
Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 57,016 44,366 107,915 91,547  
Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 5,099 4,488 9,742 9,507  
Operating Segments [Member] | Petrochemical [Member]          
Segment Reporting Information [Line Items]          
Total revenues 52,579 41,621 98,458 85,686  
Operating profit (loss) before depreciation and amortization 8,761 9,476 16,975 17,886  
Operating profit (loss) 7,217 8,048 13,875 15,122  
Profit (loss) before taxes 6,598 7,435 12,601 13,884  
Depreciation and amortization 1,544 1,428 3,100 2,764  
Capital expenditures 9,021 5,739 17,777 11,401  
Goodwill and intangible assets, net 0   0   0
Total assets 237,529   237,529   219,376
Operating Segments [Member] | Petrochemical [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 50,508 39,202 94,899 81,826  
Operating Segments [Member] | Petrochemical [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 2,071 2,419 3,559 3,860  
Operating Segments [Member] | Specialty Wax [Member]          
Segment Reporting Information [Line Items]          
Total revenues 9,536 7,233 19,199 15,368  
Operating profit (loss) before depreciation and amortization 810 584 1,555 2,647  
Operating profit (loss) (198) (196) (469) 816  
Profit (loss) before taxes (269) 11,484 [1] (559) 12,490 [1]  
Depreciation and amortization 1,008 780 2,024 1,831  
Capital expenditures 4,931 5,053 10,056 6,993  
Bargain purchase gain   11,500   11,500  
Goodwill and intangible assets, net 43,536   43,536   44,467
Total assets 117,640   117,640   113,676
Operating Segments [Member] | Specialty Wax [Member] | Product Sales [Member]          
Segment Reporting Information [Line Items]          
Total revenues 6,508 5,164 13,016 9,721  
Operating Segments [Member] | Specialty Wax [Member] | Processing Fees [Member]          
Segment Reporting Information [Line Items]          
Total revenues 3,028 2,069 6,183 5,647  
Corporate [Member]          
Segment Reporting Information [Line Items]          
Total revenues 0 0 0 0  
Operating profit (loss) before depreciation and amortization (1,841) (1,949) (4,020) (3,881)  
Operating profit (loss) (1,857) (1,956) (4,052) (3,897)  
Profit (loss) before taxes (5,165) (2,975) (8,330) 441  
Depreciation and amortization 16 7 32 16  
Capital expenditures 0   0    
Goodwill and intangible assets, net 0   0   0
Total assets 98,153   98,153   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 $ (152,180)   $ (152,180)   $ (148,996)
[1] Profit (loss) before taxes for the specialty wax segment includes a bargain purchase gain of $11.5 million.