SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Summary of Segment Information

	Three Months Ended June 30, 2021
	Specialty Petrochemicals		Specialty Waxes		Corporate		Consolidated
	(in thousands)
Product sales	$	57,763	$	6,897	$	—	$	64,660
Processing fees	1,527		2,662		—		4,189
Total revenues	59,290		9,559		—		68,849
Operating income (loss) before depreciation and amortization	9,741		1,321		(3,997)		7,065
Operating income (loss)	6,955		(198)		(3,635)		3,122
Income (loss) from continuing operations before taxes	6,709		(184)		(3,567)		2,958
Depreciation and amortization	2,787		1,518		3		4,308
Capital expenditures	3,692		191		—		3,883

	Three Months Ended June 30, 2020
	Specialty Petrochemicals		Specialty Waxes		Corporate		Consolidated
	(in thousands)
Product sales	$	31,236	$	5,471	$	—	$	36,707
Processing fees	1,159		2,808		—		3,967
Total revenues	32,395		8,279		—		40,674
Operating income (loss) before depreciation and amortization	4,974		854		(2,199)		3,629
Operating income (loss)	2,354		(485)		(2,203)		(334)
Income (loss) from continuing operations before taxes	1,648		(445)		(2,204)		(1,001)
Depreciation and amortization	2,621		1,338		3		3,962
Capital expenditures	5,382		285		—		5,667

	Six Months Ended June 30, 2021
	Specialty Petrochemicals		Specialty Waxes		Corporate		Consolidated
	(in thousands)
Product sales	$	102,421	$	13,804	$	—	$	116,225
Processing fees	2,781		4,428		—		7,209
Total revenues	105,202		18,232		—		123,434
Operating income (loss) before depreciation and amortization	12,312		840		(7,020)		6,132
Operating income (loss)	6,724		(2,155)		(6,660)		(2,091)
Income (loss) from continuing operations before taxes	6,412		(2,138)		(6,721)		(2,447)
Depreciation and amortization	5,589		2,994		6		8,589
Capital expenditures	7,259		1,405		—		8,664

	Six Months Ended June 30, 2020
	Specialty Petrochemicals		Specialty Waxes		Corporate		Consolidated
	(in thousands)
Product sales	$	81,622	$	12,268	$	—	$	93,890
Processing fees	2,403		6,448		—		8,851
Total revenues	84,025		18,716		—		102,741
Operating income (loss) before depreciation and amortization	11,464		1,920		(4,615)		8,769
Operating income (loss)	6,226		(747)		(4,625)		854
Income (loss) from continuing operations before taxes	4,590		(687)		(4,694)		(791)
Depreciation and amortization	5,238		2,666		10		7,914
Capital expenditures	6,983		601		—		7,584

	June 30, 2021
	Specialty Petrochemicals	Specialty Waxes	Corporate	Eliminations	Consolidated
	(in thousands)
Intangible assets, net	—	11,972	—	—	11,972
Total assets	295,425	81,622	119,877	(193,114)	303,810

	December 31, 2020
	Specialty Petrochemicals	Specialty Waxes	Corporate	Eliminations	Consolidated
	(in thousands)
Intangible assets, net	—	12,893	—	—	12,893
Total assets	298,198	83,108	127,260	(191,733)	316,833