Consolidated Statement of Other Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ 22,709	$ 16,535	$ 40,391	$ 31,652
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments	(278)	(800)	(197)	(2,420)
Interest rate swap amounts reclassified to interest expense	140	211	307	424
Income taxes on derivatives	48	217	(39)	735
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(90)	(372)	71	(1,261)
Amortization to net income of prior service cost	(19)	(19)	(38)	(38)
Amortization to net income of actuarial loss	110	148	220	296
Income taxes on pension and other postretirement benefit plans	(22)	(32)	(46)	(64)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	69	97	136	194
Other Comprehensive Income (Loss), Net of Tax	(21)	(275)	207	(1,067)
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Comprehensive income	22,688	16,260	40,598	30,585
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	19	(89)	43	(54)
Comprehensive income attributable to Core Laboratories N.V.	$ 22,669	$ 16,349	$ 40,555	$ 30,639