Consolidated Statement of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
REVENUES:
Revenue	$ 173,200	$ 182,146	$ 511,432	$ 527,639
OPERATING EXPENSES:
General and administrative expense, exclusive of depreciation expense shown below	11,012	13,278	38,250	38,189
Depreciation	5,199	5,436	15,631	16,646
Amortization	498	244	1,439	720
Other (income) expense, net	(712)	130	2,653	170
OPERATING INCOME	31,207	34,879	75,629	100,644
Interest expense	3,662	3,278	11,102	9,694
Income from continuing operations before income tax expense	27,545	31,601	64,527	90,950
Income tax expense (benefit)	3,335	9,404	(19,467)	19,697
Income from continuing operations	24,210	22,197	83,994	71,253
Income (loss) from discontinued operations, net of income taxes	(397)	208	7,833	(466)
Net income	23,813	22,405	91,827	70,787
Net income (loss) attributable to non-controlling interest	84	(7)	174	96
Net income attributable to Core Laboratories N.V.	$ 23,729	$ 22,412	$ 91,653	$ 70,691
EARNINGS (LOSS) PER SHARE INFORMATION:
Basic earnings per share from continuing operations (in dollar per share)	$ 0.55	$ 0.50	$ 1.89	$ 1.61
Basic earnings (loss) per share from discontinued operations	(0.01)	0.01	0.18	(0.01)
Basic earnings per share attributable to Core Laboratories N.V. (in dollar per share)	0.54	0.51	2.07	1.60
Diluted earnings per share from continuing operations (in dollar per share)	0.54	0.50	1.87	1.60
Diluted earnings (loss) per share from discontinued operations	(0.01)		0.17	(0.01)
Diluted earnings per share attributable to Core Laboratories N.V. (in dollar per share)	$ 0.53	$ 0.50	$ 2.04	$ 1.59
WEIGHTED AVERAGE COMMON SHARES OUTSTANDING:
Basic (in shares)	44,371	44,216	44,349	44,199
Diluted (in shares)	44,716	44,591	44,854	44,613
Service [Member]
REVENUES:
Revenue	$ 120,817	$ 124,145	$ 359,029	$ 366,025
OPERATING EXPENSES:
Cost of services and product sales exclusive of depreciation expense shown below	86,243	88,435	262,616	258,482
Product [Member]
REVENUES:
Revenue	52,383	58,001	152,403	161,614
OPERATING EXPENSES:
Cost of services and product sales exclusive of depreciation expense shown below	$ 39,753	$ 39,744	$ 115,214	$ 112,788