Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
REVENUES:
Revenue	$ 118,745	$ 115,736	$ 227,128	$ 268,136
OPERATING EXPENSES:
General and administrative expense, exclusive of depreciation expense shown below	9,670	9,221	18,131	28,788
Depreciation	4,576	5,069	9,209	10,111
Amortization	175	356	413	755
Impairments and other charges			0	122,204
Inventory Write-down	0	9,932	0	9,932
Other (income) expense, net	(2,317)	3,045	(3,038)	(2,075)
OPERATING INCOME (LOSS)	12,800	(2,567)	24,422	(111,540)
Interest expense	2,530	3,369	3,893	6,780
Income (loss) from continuing operations before income taxes	10,270	(5,936)	20,529	(118,320)
Income tax expense (benefit)	2,053	(261)	4,105	(4,307)
Income (loss) from continuing operations	8,217	(5,675)	16,424	(114,013)
Income (loss) from discontinued operations, net of income taxes	0	0	0	0
Net income (loss)	8,217	(5,675)	16,424	(114,013)
Net income (loss) attributable to non-controlling interest	157	41	259	124
Net income (loss) attributable to Core Laboratories N.V.	$ 8,060	$ (5,716)	$ 16,165	$ (114,137)
EARNINGS (LOSS) PER SHARE INFORMATION:
Basic earnings (loss) per share from continuing operations	$ 0.18	$ (0.13)	$ 0.36	$ (2.57)
Basic earnings (loss) per share from discontinued operations	0	0	0	0
Basic earnings (loss) per share attributable to Core Laboratories N.V.	0.17	(0.13)	0.35	(2.57)
Diluted earnings (loss) per share from continuing operations	0.17	(0.13)	0.35	(2.57)
Diluted earnings (loss) per share from discontinued operations	0	0	0	0
Diluted earnings (loss) per share attributable to Core Laboratories N.V.	$ 0.17	$ (0.13)	$ 0.35	$ (2.57)
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	46,319	44,470	45,751	44,459
Assuming Dilution (in shares)	47,103	44,470	46,514	44,459
Service [Member]
REVENUES:
Revenue	$ 86,263	$ 91,009	$ 170,245	$ 200,976
OPERATING EXPENSES:
Cost of product sales, exclusive of depreciation expense and inventory write-down shown below	67,098	67,054	130,631	147,995
Product [Member]
REVENUES:
Revenue	32,482	24,727	56,883	67,160
OPERATING EXPENSES:
Cost of product sales, exclusive of depreciation expense and inventory write-down shown below	$ 26,743	$ 23,626	$ 47,360	$ 57,816