Consolidated Balance Sheets Statement - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 13,244	$ 14,400
Accounts receivable, net of allowance for doubtful accounts of $2,644 and $2,590 at 2018 and 2017, respectively	137,661	133,097
Inventories	36,438	33,317
Prepaid expenses	14,150	12,592
Income taxes receivable	8,783	7,508
Other current assets	9,909	6,513
TOTAL CURRENT ASSETS	220,185	207,427
PROPERTY, PLANT AND EQUIPMENT, net	122,333	123,098
INTANGIBLES, net	9,221	9,396
GOODWILL	179,044	179,044
DEFERRED TAX ASSETS	11,563	10,719
OTHER ASSETS	54,794	55,128
TOTAL ASSETS	597,140	584,812
CURRENT LIABILITIES:
Accounts payable	45,541	41,697
Accrued payroll and related costs	27,509	28,887
Taxes other than payroll and income	6,383	7,313
Unearned revenue	11,783	12,627
Income taxes payable	3,832	825
Other current liabilities	9,279	9,227
TOTAL CURRENT LIABILITIES	104,327	100,576
LONG-TERM DEBT, net	235,114	226,989
CONTRACT LIABILITIES	5,474	4,442
DEFERRED COMPENSATION	52,755	52,786
DEFERRED TAX LIABILITIES	5,897	5,323
OTHER LONG-TERM LIABILITIES	41,997	45,964
COMMITMENTS AND CONTINGENCIES (Note 8)
Preference shares, EUR 0.02 par value; 6,000,000 shares authorized, none issued or outstanding	0	0
Common shares, EUR 0.02 par value; 200,000,000 shares authorized, 44,796,252 issued and 44,189,593 outstanding at 2018 and 44,796,252 issued and 44,184,205 outstanding at 2017	1,148	1,148
Additional paid-in capital	55,670	54,463
Retained earnings	173,060	173,855
Accumulated other comprehensive income (loss)	(7,745)	(8,353)
Treasury shares (at cost), 606,659 at 2018 and 612,047 at 2017	(74,495)	(76,269)
Total Core Laboratories N.V. shareholders' equity	147,638	144,844
Non-controlling interest	3,938	3,888
TOTAL EQUITY	151,576	148,732
TOTAL LIABILITIES AND EQUITY	$ 597,140	$ 584,812