Unaudited Selected Quarterly Results of Operations

12 Months Ended

Dec. 31, 2017

Unaudited Selected Quarterly Results of Operations [Abstract]

Quarterly Financial Information [Text Block]

Summarized below is our unaudited quarterly financial data for the quarters ended December 31, 2017 and 2016 (in thousands, except per share data):

	Quarter ended 2017
	December 31			September 30			June 30		March 31
Services and product sales revenue	$	171,852		$	166,247		$	163,903	$	157,807
Cost of services and product sales	121,660			120,890			117,118		114,572
Other operating expenses	17,814			17,881			17,378		20,056
Operating income	32,378			27,476			29,407		23,179
Interest expense	2,717			2,707			2,692		2,618
Income before income tax expense	29,661			24,769			26,715		20,561
Income tax expense	8,009			3,716			4,006		2,879
Net income	21,652			21,053			22,709		17,682
Net income (loss) attributable to non-controlling interest	(39		)	(33		)	19		24
Net income attributable to Core Laboratories N.V.	$	21,691		$	21,086		$	22,690	$	17,658
Per share information:
Basic earnings per share (1)	$	0.49		$	0.48		$	0.51	$	0.40
Diluted earnings per share (1)	$	0.49		$	0.48		$	0.51	$	0.40
Weighted average common shares outstanding:
Basic	44,147			44,141			44,164		44,159
Diluted	44,276			44,332			44,374		44,347

	Quarter ended 2016
	December 31			September 30		June 30			March 31
Services and product sales revenue	$	149,542		$	143,483	$	148,069		$	153,647
Cost of services and product sales	112,678			107,153		109,999			112,814
Other operating expenses	15,340			14,842		17,843			17,893
Operating income	21,524			21,488		20,227			22,940
Interest expense	2,548			2,569		3,021			3,434
Income before income tax expense	18,976			18,919		17,206			19,506
Income tax expense	3,607			2,081		671			4,389
Net income	15,369			16,838		16,535			15,117
Net income attributable to non-controlling interest	(90		)	108		(89		)	35
Net income attributable to Core Laboratories N.V.	$	15,459		$	16,730	$	16,624		$	15,082
Per share information:
Basic earnings per share (1)	$	0.35		$	0.38	$	0.38		$	0.36
Diluted earnings per share (1)	$	0.35		$	0.38	$	0.38		$	0.35
Weighted average common shares outstanding:
Basic	44,147			44,110		43,297			42,380
Diluted	44,326			44,320		43,505			42,520

(1) The sum of the individual quarterly earnings per share amounts may not agree with the year-to-date earnings per share amounts as each quarterly computation is based on the weighted average number of common shares outstanding during that period.