Euronet Worldwide (EEFT) 10-K 28 Feb 19 2018 FY Annual report Financial data

Document and Entity Information

Document and Entity Information Document - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Feb. 27, 2019	Jun. 29, 2018
Entity Information [Line Items]
Entity Registrant Name	EURONET WORLDWIDE INC
Entity Central Index Key	1,029,199
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 4,084
Entity Common Stock, Shares Outstanding		51,871,238

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 1,054,357	$ 819,144
Restricted cash	76,595	81,374
Trade accounts receivable, net of allowances for doubtful accounts of $24,287 at December 31, 2018 and $20,958 at December 31, 2017	693,616	744,879
Prepaid expenses and other current assets	263,019	244,789
Total current assets	2,087,587	1,890,186
Property and equipment, net of accumulated depreciation of $373,180 at December 31, 2018 and $340,128 at December 31, 2017	291,869	268,303
Goodwill	704,197	717,386
Acquired intangible assets, net of accumulated amortization of $190,920 at December 31, 2018 and $179,142 at December 31, 2017	114,485	150,543
Other assets, net of accumulated amortization of $50,821 at December 31, 2018 and $44,469 at December 31, 2017	123,017	113,611
Total assets	3,321,155	3,140,029
Current liabilities:
Trade accounts payable	528,913	494,841
Accrued expenses and other current liabilities	706,554	759,789
Current portion of capital lease obligations	5,458	5,369
Short-term debt obligations and current maturities of long-term debt obligations	38,017	41,288
Income taxes payable	40,159	54,437
Deferred revenue	59,293	51,996
Total current liabilities	1,378,394	1,407,720
Debt obligations, net of current portion	589,782	404,012
Capital lease obligations, net of current portion	8,199	9,753
Deferred income taxes	57,145	54,969
Other long-term liabilities	54,793	64,097
Total liabilities	2,088,313	1,940,551
Euronet Worldwide, Inc. stockholders' equity:
Preferred Stock, $0.02 par value. 10,000,000 shares authorized; none issued	0	0
Common Stock, $0.02 par value. 90,000,000 shares authorized; 59,897,309 issued at December 31, 2018 and 58,892,744 issued at December 31, 2017	1,198	1,178
Additional paid-in capital	1,104,264	1,072,005
Treasury stock, at cost, 8,077,311 shares at December 31, 2018 and 6,084,586 shares at December 31, 2017	(391,551)	(217,161)
Retained earnings (Accumulated deficit)	669,805	436,954
Accumulated other comprehensive loss	(151,043)	(94,458)
Total Euronet Worldwide, Inc. stockholders' equity	1,232,673	1,198,518
Noncontrolling interests	169	960
Total equity	1,232,842	1,199,478
Total liabilities and equity	$ 3,321,155	$ 3,140,029

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Allowance for doubtful accounts receivable	$ 24,287	$ 20,958
Property and equipment, accumulated depreciation	373,180	340,128
Acquired intangible assets, accumulated amortization	190,920	179,142
Other assets, accumulated amortization	$ 50,821	$ 44,469
Preferred stock, par value per share	$ 0.02	$ 0.02
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Common stock, par value per share	$ 0.02	$ 0.02
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares, issued	59,897,309	58,892,744
Treasury stock, shares	8,077,311	6,084,586

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Revenues	$ 649,385	$ 714,505	$ 622,224	$ 550,515	$ 604,645	$ 637,834	$ 536,563	$ 473,380	$ 2,536,629	$ 2,252,422	$ 1,958,615
Operating expenses:
Direct operating costs									1,488,406	1,356,250	1,174,545
Salaries and benefits									360,432	310,787	288,420
Selling, general and administrative									216,807	190,302	165,348
Goodwill and Intangible Asset Impairment									7,049	34,056	0
Depreciation and amortization									106,021	95,030	80,529
Total operating expenses									2,178,715	1,986,425	1,708,842
Operating income	71,160	150,913	90,369	45,472	41,119	116,901	66,691	41,286	357,914	265,997	249,773
Other income (expense):
Interest income									1,320	2,443	1,696
Interest expense									(37,573)	(32,571)	(28,332)
(Loss) income from unconsolidated affiliates									(117)	48	0
Other gains, net									27	118	19,956
Foreign currency exchange (loss) gain, net									(26,655)	20,300	(10,200)
Other expense, net									(62,998)	(9,662)	(16,880)
Income before income taxes									294,916	256,335	232,893
Income tax expense									(62,785)	(99,395)	(58,795)
Net income	59,894	102,257	43,636	26,344	(22,829)	100,353	51,347	28,069	232,131	156,940	174,098
Less: Net (income) loss attributable to noncontrolling interests									720	(95)	317
Net income attributable to Euronet Worldwide, Inc.	$ 59,991	$ 102,723	$ 43,724	$ 26,413	$ (22,933)	$ 100,290	$ 51,365	$ 28,123	$ 232,851	$ 156,845	$ 174,415
Earnings per share attributable to Euronet Worldwide, Inc. stockholders - basic	$ 1.16	$ 2.01	$ 0.85	$ 0.51	$ (0.44)	$ 1.91	$ 0.98	$ 0.54	$ 4.52	$ 2.99	$ 3.34
Earnings per share attributable to Euronet Worldwide, Inc. stockholders - diluted	$ 1.10	$ 1.89	$ 0.82	$ 0.49	$ (0.44)	$ 1.80	$ 0.93	$ 0.51	$ 4.26	$ 2.85	$ 3.23
Weighted average shares outstanding - basic									51,487,557	52,523,272	52,276,951
Weighted average shares outstanding - diluted									54,627,747	55,116,327	54,001,079

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income	$ 232,131	$ 156,940	$ 174,098
Other comprehensive income (loss), net of tax:
Translation adjustment	(56,656)	116,401	(45,175)
Comprehensive income	175,475	273,341	128,923
Comprehensive (income) loss attributable to noncontrolling interests	791	(292)	358
Comprehensive income attributable to Euronet Worldwide, Inc.	$ 176,266	$ 273,049	$ 129,281

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Total Euronet Worldwide, Inc stockholders' equity at Dec. 31, 2015	$ 825,928	$ 1,159	$ 1,023,254	$ (138,750)	$ 104,427	$ (165,528)	$ 1,366
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		421,170
Treasury Stock, Shares, Acquired		(1,149,571)
No. of Shares Outstanding Period End at Dec. 31, 2016	52,303,401
No. of Shares Outstanding Period End at Dec. 31, 2015	53,031,802
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Euronet Worldwide, Inc.	$ 174,415				174,415
Stock issued under employee stock plans, value	6,292	$ 9	7,426	(1,143)
Share-based compensation	14,983		14,983
Net income (loss)	174,098
Net income (loss) attributable to noncontrolling interests	(317)						(317)
Other Comprehensive Income (Loss)	(45,175)					(45,134)	(41)
Repurchase of shares	(75,569)			(75,569)
Stockholders' Equity, Other
Total Euronet Worldwide, Inc stockholders' equity at Dec. 31, 2016	$ 900,557	$ 1,168	1,045,663	(215,462)	278,842	(210,662)	1,008
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		504,757
No. of Shares Outstanding Period End at Dec. 31, 2017	52,808,158
No. of Shares Outstanding Period End at Dec. 31, 2016	52,303,401
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Euronet Worldwide, Inc.	$ 156,845				156,845
Stock issued under employee stock plans, value	8,415	$ 10	10,104	(1,699)
Share-based compensation	15,618		15,618
Net income (loss)	156,940
Net income (loss) attributable to noncontrolling interests	95						95
Other Comprehensive Income (Loss)	116,401					116,204	197
Stockholders' Equity, Other	1,547		620		1,267		(340)
Total Euronet Worldwide, Inc stockholders' equity at Dec. 31, 2017	$ 1,199,478	$ 1,178	1,072,005	(217,161)	436,954	(94,458)	960
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		1,039,480
Treasury Stock, Shares, Acquired		(2,032,599)
Stock Issued During Period, Shares, Other		4,959
No. of Shares Outstanding Period End at Dec. 31, 2018	51,819,998
No. of Shares Outstanding Period End at Dec. 31, 2017	52,808,158
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Euronet Worldwide, Inc.	$ 232,851				232,851
Stock issued under employee stock plans, value	16,264	$ 20	15,634	610
Share-based compensation	16,764		16,764
Net income (loss)	232,131
Net income (loss) attributable to noncontrolling interests	(720)						(720)
Other Comprehensive Income (Loss)	(56,656)					(56,585)	(71)
Repurchase of shares	(175,000)			(175,000)
Stockholders' Equity, Other	(139)		(139)
Total Euronet Worldwide, Inc stockholders' equity at Dec. 31, 2018	$ 1,232,842	$ 1,198	$ 1,104,264	$ (391,551)	$ 669,805	$ (151,043)	$ 169

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 59,894	$ 26,344	$ (22,829)	$ 28,069	$ 232,131	$ 156,940	$ 174,098
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization					106,021	95,030	80,529
Share-based compensation					16,764	15,618	14,983
Unrealized foreign exchange (gain) loss, net					26,655	(20,300)	10,200
Goodwill and Intangible Asset Impairment					7,049	34,056	0
Other (gains) losses					0	0	(19,449)
Deferred income taxes					2,425	(10,861)	850
Loss (income) from unconsolidated affiliates					117	(48)	0
Accretion of convertible debt discount and amortization of debt issuance costs					14,121	13,504	12,885
Changes in working capital, net of amounts acquired:
Income taxes payable, net					(13,317)	23,183	13,935
Trade accounts receivable					26,497	(198,089)	(87,732)
Prepaid expenses and other current assets					(29,066)	35,451	(75,261)
Trade accounts payable					45,562	3,840	9,705
Deferred revenue					9,349	3,724	9,426
Accrued expenses and other current liabilities					(37,595)	106,350	257,287
Changes in noncurrent assets and liabilities					(9,480)	27,878	(9,932)
Net cash provided by operating activities					397,233	286,276	391,524
Cash flows from investing activities:
Acquisitions, net of cash acquired					(12,854)	0	(55,915)
Purchases of property and equipment					(112,484)	(97,235)	(87,411)
Purchases of other long-term assets					(8,528)	(6,039)	(6,175)
Proceeds from sale of investment					0	0	11,900
Other, net					1,583	1,416	1,288
Net cash used in investing activities					(132,283)	(101,858)	(136,313)
Cash flows from financing activities:
Proceeds from issuance of shares					18,608	10,990	6,292
Repurchase of shares					(177,855)	(3,065)	(77,360)
Borrowings from revolving credit agreements					5,773,294	2,409,203	2,648,093
Repayments of revolving credit agreements					(5,560,089)	(2,566,621)	(2,495,632)
Repayments of long-term debt obligations					(52,199)	(8,907)	(7,031)
Repayments of capital lease obligations					(6,137)	(4,883)	(2,943)
Net borrowing (repayments of) from short-term debt obligations					9,472	1,853	6,750
Payments of Debt Issuance Costs					3,071		0	$ 0
Other, net					1	281	1,341
Net cash provided by (used in) financing activities					2,024	(161,149)	79,510
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents					(36,540)	65,161	(25,463)
Increase in cash and cash equivalents and restricted cash					230,434	88,430	309,258
Cash and cash equivalents and restricted cash at beginning of period		$ 900,518		$ 812,088	900,518	812,088	502,830
Cash and cash equivalents and restricted cash at end of period	$ 1,130,952		$ 900,518		1,130,952	900,518	812,088	$ 502,830
Interest paid during the period					23,554	20,457	14,442
Income taxes paid during the period					84,382	48,644	43,178
Other Significant Noncash Transaction, Value of Consideration Received					$ 0	$ 0	$ 7,549

Organzation (Note)

Organzation (Note)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization Disclosure [Text Block]	Organization Euronet Worldwide, Inc. (the “Company” or “Euronet”) was established as a Delaware corporation on December 13, 1997 and succeeded Euronet Holding N.V. as the group holding company, which was founded and established in 1994. Euronet is a leading electronic payments provider. Euronet offers payment and transaction processing and distribution solutions to financial institutions, retailers, service providers and individual consumers. Euronet's primary product offerings include comprehensive automated teller machine (“ATM”), point-of-sale (“POS”), card outsourcing, card issuing and merchant acquiring services, electronic distribution of prepaid mobile airtime and other electronic payment products, and global money transfer services.

Basis of Preparation (Note)

Basis of Preparation (Note)	12 Months Ended
	Dec. 31, 2018
BASIS OF PREPARATION [Abstract]
Basis of Preparation and Seasonality [Text Block]	Basis of Preparation The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“U.S. GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). The consolidated financial statements include the accounts of Euronet and its wholly owned and majority owned subsidiaries and all significant intercompany balances and transactions have been eliminated. Euronet's investments in companies that it does not control, but has the ability to significantly influence, are accounted for under the equity method. Euronet is not involved with any variable interest entities. Results from operations related to entities acquired during the periods covered by the consolidated financial statements are reflected from the effective date of acquisition. The preparation of the consolidated financial statements in conformity with U.S. GAAP requires that management make a number of estimates and assumptions relating to the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities and the reported amounts of revenues and expenses. Significant items subject to such estimates and assumptions include computing income taxes, contingent purchase price consideration, estimating the useful lives and potential impairment of long-lived assets and goodwill, as well as allocating the purchase price to assets acquired and liabilities assumed in acquisitions and revenue recognition. Actual results could differ from those estimates. Seasonality Euronet’s EFT Processing Segment experiences its heaviest demand for dynamic currency conversion services during the third quarter of the fiscal year, coinciding with the tourism season. Additionally, the EFT Processing and epay Segments are impacted by seasonality during the fourth quarter and first quarter of each year due to higher transaction levels during the holiday season and lower levels following the holiday season. Seasonality in the money transfer segment varies by region of the world. In most markets, Euronet usually experiences increased demand for money transfer services from the month of May through the fourth quarter of each year, coinciding with the increase in worker migration patterns and various holidays, and its lowest transaction levels during the first quarter of the year.

Summary of Significant Accounti

Summary of Significant Accounting Policies and Practices (Note)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES	Summary of Significant Accounting Policies and Practices Foreign currencies Assets and liabilities denominated in currencies other than the functional currency of a subsidiary are remeasured at rates of exchange on the balance sheet date. Resulting gains and losses on foreign currency transactions are included in the Consolidated Statements of Income. The financial statements of foreign subsidiaries where the functional currency is not the U.S. dollar are translated to U.S. dollars using (i) exchange rates in effect at period end for assets and liabilities, and (ii) weighted average exchange rates during the period for revenues and expenses. Adjustments resulting from translation of such financial statements are reflected in accumulated other comprehensive income (loss) as a separate component of consolidated equity. Cash equivalents The Company considers all highly liquid investments, with an original maturity of three months or less, and certificates of deposit, which may be withdrawn at any time at the discretion of the Company without penalty, to be cash equivalents. Property and equipment Property and equipment are stated at cost, less accumulated depreciation. Property and equipment acquired in acquisitions have been recorded at estimated fair values as of the acquisition date. Depreciation is generally calculated using the straight-line method over the estimated useful lives of the respective assets. Depreciation and amortization rates are generally as follows: ATMs or ATM upgrades 5 - 7 years Computers and software 3 - 5 years POS terminals 3 - 5 years Vehicles and office equipment 3 - 10 years Leasehold improvements Over the lesser of the lease term or estimated useful life Goodwill and other intangible assets The Company accounts for goodwill and other intangible assets in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 350, Intangibles - Goodwill and Other (“ASC 350”). ASC 350 requires that the Company test for impairment on an annual basis and whenever events or circumstances dictate. Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. ASC 350 provides an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (more than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the existing quantitative impairment test (described below), otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The Company has a policy for its annual review of goodwill to perform the qualitative assessment for all reporting units not subjected directly to the quantitative impairment test. Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Furthermore, the Company considers the results of the most recent quantitative impairment test completed for a reporting unit and compares, among other factors, the weighted average cost of capital ("WACC") between the current and prior years for each reporting unit. Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. The Company uses weighted results from the discounted cash flow model ("DCF model") and guideline public company method ("Market Approach model") to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows and EBITDA are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including sales volumes and gross margins, tax rates, capital spending, discount rates and working capital changes. Most of these assumptions vary significantly among the reporting units. Significant assumptions in the Market Approach model are projected EBITDA, selected market multiple, and the estimated control premium. If the carrying value of goodwill exceeds its fair value, an impairment loss equal to such excess would be recognized. The Company completed its annual goodwill impairment test in the fourth quarter of 2018. It determined, after performing a qualitative review of each reporting unit, that it is more likely than not that the fair value of each of our reporting units exceeds the respective carrying amounts. Accordingly, there was no indication of impairment, and the quantitative goodwill impairment test was not performed. Other Intangible Assets - In accordance with ASC 350, intangible assets with finite lives are amortized over their estimated useful lives. Unless otherwise noted, amortization is calculated using the straight-line method over the estimated useful lives of the assets as follows: Non-compete agreements 2 - 5 years Trademarks and trade names 2 - 20 years Software 3 - 10 years Customer relationships 6 - 20 years The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If such events or changes in circumstances are present, a loss is recognized if the carrying value of the asset is in excess of the sum of the undiscounted cash flows expected to result from the use of the asset and its eventual disposition. An impairment loss is measured as the amount by which the carrying amount of the asset exceeds the fair value of the asset. During 2018, the Company recorded a non-cash impairment charge of $7.0 million related to certain trade names as a result of combining HiFX into xe in order to operate the businesses under one brand name, xe. During 2017, the Company recorded a non-cash impairment charge of $2.3 million related to certain customer relationships as a result of the closure of the Pure Commerce office in South Korea. No impairment of long-lived assets was recorded during 2016. See Note 8, Goodwill and Acquired Intangible Assets, Net, to the Consolidated Financial Statements for additional information regarding the impairment of goodwill and other intangible assets. Other assets Other assets include investments in unconsolidated affiliates, capitalized software development costs and capitalized payments for new or renewed contracts, contract renewals and customer conversion costs. Euronet capitalizes initial payments for new or renewed contracts to the extent recoverable through future operations, contractual minimums and/or penalties in the case of early termination. The Company's accounting policy is to limit the amount of capitalized costs for a given contract to the lesser of the estimated ongoing net future cash flows related to the contract or the termination fees the Company would receive in the event of early termination of the contract by the customer. ASC Topic 340, Other Assets and Deferred Costs (“ASC 340”) requires the deferral of incremental costs to obtain customer contracts, known as contract assets, which are then amortized to expense as part of selling, general and administrative expense over the respective periods of expected benefit. The Company completed its review of such costs and concluded that a transition adjustment was not necessary related to contract assets. However, the Company has implemented processes and controls to record such costs on an ongoing basis and will disclose them if they become material. The Company accounts for investments in affiliates using the equity method of accounting when it has the ability to exercise significant influence over the affiliate, but does not have a controlling interest. Equity losses in affiliates are generally recognized until the Company's investment is zero. As of December 31, 2018 and 2017, the Company had no material investments in unconsolidated affiliates. Convertible notes The Company accounts for its convertible debt instruments that may be settled in cash upon conversion in accordance with ASC Topic 470, Debt (“ASC 470”), which requires the proceeds from the issuance of such convertible debt instruments to be allocated between debt and equity components so that debt is discounted to reflect the Company's nonconvertible debt borrowing rate. Further, the Company applies ASC 470-20-35-13, which requires the debt discount to be amortized over the period the convertible debt is expected to be outstanding as additional non-cash interest expense. Noncontrolling interests The Company accounts for noncontrolling interests in its consolidated financial statements according to ASC Topic 810, Consolidations (“ASC 810”), which requires noncontrolling interests to be reported as a component of equity. Business combinations The Company accounts for business combinations in accordance with ASC Topic 805, Business Combinations (“ASC 805”), which requires most identifiable assets, liabilities, noncontrolling interests and goodwill acquired in a business combination to be recorded at “full fair value” at the acquisition date. Transaction-related costs are expensed in the period incurred. Income taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. In accordance with ASC Topic 740, Income Taxes (“ASC 740”), the Company's policy is to record estimated interest and penalties related to the underpayment of income taxes as income tax expense in the Consolidated Statements of Income. See Note 13, Taxes, to the Consolidated Financial Statements for further discussion regarding these provisions. Presentation of taxes collected and remitted to governmental authorities The Company presents taxes collected and remitted to governmental authorities on a net basis in the accompanying Consolidated Statements of Income. Fair value measurements The Company applies the provisions of ASC Topic 820, Fair Value Measurements and Disclosures (“ASC 820”), regarding fair value measurements for assets and liabilities. ASC 820 defines fair value, establishes a framework for measuring fair value and requires certain disclosures about fair value measurements. The provisions apply whenever other accounting pronouncements require or permit fair value measurements. See Note 17, Financial Instruments and Fair Value Measurements, to the Consolidated Financial Statements for the required fair value disclosures. Accounting for derivative instruments and hedging activities The Company accounts for derivative instruments and hedging activities in accordance with ASC Topic 815, Derivatives and Hedging (“ASC 815”), which requires that all derivative instruments be recognized as either assets or liabilities on the balance sheet at fair value. Primarily in the Money Transfer Segment, the Company enters into foreign currency derivative contracts, mainly forward contracts, to offset foreign currency exposure related to money transfer settlement assets and liabilities in currencies other than the U.S. dollar, derivative contracts written to its customers arising from its cross-currency money transfer services and certain assets and liability positions denominated in currencies other than the U.S. dollar. These contracts are considered derivative instruments under the provisions of ASC 815; however, the Company does not designate such instruments as hedges for accounting purposes. Accordingly, changes in the value of these contracts are recognized immediately as a component of foreign currency exchange gain (loss), net in the Consolidated Statements of Income. Cash flows resulting from derivative instruments are included in operating activities in the Company's Consolidated Statements of Cash Flows. The Company enters into derivative instruments with highly credit-worthy financial institutions and does not use derivative instruments for trading or speculative purposes. See Note 11, Derivative Instruments and Hedging Activities, to the Consolidated Financial Statements for further discussion of derivative instruments. Revenue recognition The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Sales and usage-based taxes are excluded from revenues. A description of the major components of revenue by business segment is as follows: EFT Processing - Revenues in the EFT Processing Segment are primarily derived from transaction and management fees and foreign currency exchange margin from owned and outsourced ATM, POS and card processing networks and from the sale of EFT software solutions for electronic payment and transaction delivery systems, and fees or margin earned from value added services, including dynamic currency conversion and domestic and international surcharge. Transaction-based fees include charges for cash withdrawals, debit or credit card transactions, balance inquiries, transactions not completed because the relevant card issuer does not give authorization and prepaid mobile airtime recharges. Outsourcing services are generally billed on the basis of a fixed monthly fee per ATM, plus a transaction-based fee. Transaction-based fees are recognized at the time the transactions are processed and outsourcing management fees are recognized ratably over the contract period. These fees can be variable based on transaction volume tiered discounts; however, as all tiered discounts are calculated monthly, the actual discount is recorded on a monthly basis. Certain of the Company's non-cancelable customer contracts provide for the receipt of up-front fees from the customer and/or decreasing or increasing fee schedules over the agreement term for substantially the same level of services to be provided by the Company. The Company recognizes revenue under these contracts based on proportional performance of services over the term of the contract. This generally results in “straight-line” (i.e., consistent value per period) revenue recognition of the contracts' total cash flows, including any up-front payment received from the customer. epay - Revenue generated in the epay Segment is primarily derived from commissions or processing fees associated with distribution and/or processing of prepaid mobile airtime and non-mobile products. These fees and commissions are received from mobile operators, content vendors or distributors or from retailers. In accordance with ASC 606, commissions are recognized as revenue during the period in which the Company provides the service. The portion of the commission that is paid to retailers is generally recorded as a direct operating cost. However, in circumstances where the Company is not the primary obligor in the distribution of the electronic payment products, those commissions are recorded as a reduction of revenue. In selling certain products, the Company is the primary obligor in the arrangements; accordingly, the gross sales value of the products are recorded as revenue and the purchase cost as direct operating cost. Transactions are processed through a network of POS terminals and direct connections to the electronic payment systems of retailers. Transaction processing fees are recognized at the time the transactions are processed. Money Transfer - In accordance with ASC 606, revenues for money transfer and other services represent a transaction fee in addition to a margin earned from purchasing currency at wholesale exchange rates and selling the currency to customers at retail exchange rates. Revenues and the associated direct operating cost are recognized at the time the transaction is processed. The Company has origination and distribution agents in place, which each earn a fee for the respective service. These fees are reflected as direct operating costs. Share-based compensation The Company follows the provisions of ASC Topic 718, Compensation - Stock Compensation (“ASC 718”), for equity classified awards, which requires the determination of the fair value of the share-based compensation at the grant date and subsequent recognition of the related expense over the period in which the share-based compensation is earned (“requisite service period”). The amount of future compensation expense related to awards of nonvested shares or nonvested share units (“restricted stock”) is based on the market price for Euronet Common Stock at the grant date. The grant date is the date at which all key terms and conditions of the grant have been determined and the Company becomes contingently obligated to transfer equity to the employee who renders the requisite service, generally the date at which grants are approved by the Company's Board of Directors or Compensation Committee thereof. Share-based compensation expense for awards with only service conditions is generally recognized as expense on a “straight-line” basis over the requisite service period. For awards that vest based on achieving periodic performance conditions, expense is recognized on a “graded attribution method.” The graded attribution method results in expense recognition on a straight-line basis over the requisite service period for each separately vesting portion of an award. The Company has elected to use the “with and without method” when calculating the income tax benefit associated with its share-based payment arrangements. See Note 15, Stock Plans, for further disclosure. Recently issued accounting pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“Topic 606”), and subsequently modified the standard with several ASUs. The Company adopted the standard on January 1, 2018 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with historic accounting under Topic 605. The Company completed its review of customer contracts relative to the requirements of Topic 606 and concluded that revenues from certain customer contracts in the epay Segment should be recorded differently under the principal versus agent guidance of Topic 606. With respect to those contracts, the Company concluded that it earns a commission from content providers for distributing and processing their prepaid mobile airtime and other electronic payment products, but it is not the principal for the products themselves. As a result, the impact of the change in accounting principle was a reduction of $88.5 million in both revenues and direct operating expenses for the year ended December 31, 2018, with no impact on reported net income. Contract Balances The Company records deferred revenues when cash payments are received or due in advance of its performance. The increase in the deferred revenue balance for 2018 is primarily driven by $52.9 million of cash payments received in the current year for which we have not yet satisfied the performance obligations, that were offset by $45.6 million of revenues recognized that were included in the deferred revenue balance as of December 31, 2017. Disaggregation of Revenues The following table presents the Company's revenues disaggregated by segment and region. The Company believes disaggregation by segment and region best depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The disaggregation of revenues by segment and region is based on management's assessment of segment performance together with allocation of financial resources, both capital and operating support costs, on a segment and regional level. Both segments and regions benefit from synergies achieved through concentration of operations and are influenced by macro-economic, regulatory and political factors in the respective segment and region. The Company recognizes foreign exchange revenues from derivative instruments in its HiFX operations in accordance with ASC Topic 815 and not ASC Topic 606. These revenues are not significant to the Company's consolidated revenues and are included in the following tables. For the Year Ended December 31, 2018 (in thousands) EFT Processing epay Money Transfer Total Europe $ 608,993 $ 491,282 $ 328,592 $ 1,428,867 North America 32,306 165,930 569,005 767,241 Asia Pacific 112,294 71,242 127,057 310,593 Other 58 15,330 18,308 33,696 Eliminations — — (3,768 ) Total $ 753,651 $ 743,784 $ 1,042,962 $ 2,536,629 For the Year Ended December 31, 2017 (1) (in thousands) EFT Processing epay Money Transfer Total Europe $ 501,161 $ 561,232 $ 262,280 $ 1,324,673 North America 31,469 63,148 513,868 608,485 Asia Pacific 101,787 91,516 101,005 294,308 Other 142 18,102 9,705 27,949 Eliminations — — — (2,993 ) Total $ 634,559 $ 733,998 $ 886,858 $ 2,252,422 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. For the Year Ended December 31, 2016 (1) (in thousands) EFT epay Money Total Europe $ 343,932 $ 498,668 $ 236,000 $ 1,078,600 North America 28,070 81,983 470,220 580,273 Asia Pacific 92,252 95,524 89,787 277,563 Other — 17,811 5,912 23,723 Eliminations — — — (1,544 ) Total $ 464,254 $ 693,986 $ 801,919 $ 1,958,615 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. In March 2016, the FASB issued ASU 2016-04, Recognition of Breakage for Certain Prepaid Stored-Value Products. The new standard specifies that liabilities within its scope are considered to be financial liabilities, and amends the guidance in ASC 405-20, Extinguishments of Liabilities, by directing entities to derecognize prepaid stored-value product liabilities based on expected breakage in proportion to the pattern of rights expected to be exercised by the consumer. Derecognition for breakage is permitted only to the extent that it is probable that a significant reversal of recognized breakage will not subsequently occur. The new standard is consistent with the breakage guidance in Topic 606. The Company adopted this ASU as of January 1, 2018 along with Topic 606. The adoption of this standard did not have a significant impact on the Company's consolidated financial statements and related disclosures. In August 2016, the FASB issued an accounting standard classified under FASB ASC Topic 230, “Statement of Cash Flows” . This accounting standard provides guidance on eight specific cash flow issues. Subsequently, the FASB issued amendments to this accounting standard that required companies to include restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the statement of cash flows. The Company adopted these standards as of January 1, 2018. The adoption of these accounting standards resulted in a decrease of $5.0 million for 2017 and an increase of $23.3 million for 2016 in net cash provided by operating activities. As of December 31, 2018, the Company had $76.6 million of restricted cash consisting of restricted cash held in trust and/or cash held on behalf of others and cash collateral on bank credit arrangements. Cash held in trust and/or cash held on behalf of others is in connection with the administration of the customer collection and vendor remittance activities by certain subsidiaries within the Company’s epay and EFT Processing Segments. Amounts collected on behalf of certain mobile phone operators and/or merchants are deposited into a restricted cash account. The bank credit arrangements primarily represent cash collateral on deposit with commercial banks to cover guarantees. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which will update the existing guidance on accounting for leases and require new qualitative and quantitative disclosures about the Company’s leasing activities. Topic 842 was subsequently amended by ASU No. 2018-01, Land Easement Practical Expedient for Transition to Topic 842; ASU No. 2018-10, Codification Improvements to Topic 842, Leases; ASU No. 2018-11, Targeted Improvements; and ASU No. 2018-20, Narrow Scope Improvements for Lessors. The new standard requires lessees to account for all leases on the balance sheet, except for certain short-term leases that have a maximum possible lease term of 12 months. The accounting for lessors is largely unchanged from the previous accounting guidance, except for leverage lease accounting which is not permitted for leases entered into or modified after the effective date of the new standard. The new standard is effective for annual periods beginning after December 15, 2018 and interim periods within those annual periods, with early adoption permitted. A modified retrospective approach is required, applying the new standard to all leases existing at the date of initial application. An entity may choose to use either (1) its effective date or (2) the beginning of the earliest comparative period presented in the financial statements as its date of initial application. The Company will adopt the new standard on January 1, 2019 and use the effective date as the date of initial application. Consequently, financial information will not be updated and the disclosures required under the new standard will not be provided for dates and periods before January 1, 2019. The new standard provides a number of optional practical expedients in transition. The Company will elect the "package of practical expedients," which permits the Company not to reassess under the new standard our prior conclusions about lease identification, lease classification and initial direct costs. The Company will also elect to combine lease and non-lease components and to include short-term leases with an initial term of 12 months or less on the balance sheet. The Company estimates approximately $375 million would be recognized as total right-of-use assets and total lease liabilities on its consolidated balance sheet as of January 1, 2019. Other than as disclosed, the Company does not expect the new standard to have a material impact on its results of operations or its cash flows. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) , which requires entities to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Topic 326 was subsequently amended by ASU 2018-19. This replaces the existing incurred loss model and is applicable to the measurement of credit losses on financial assets measured at amortized cost. The Company is continuing to assess the potential impacts of the standard.

Stockholders' Equity (Note)

Stockholders' Equity (Note)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders' Equity Earnings Per Share Basic earnings per share has been computed by dividing earnings available to common stockholders by the weighted average number of common shares outstanding during the respective period. Diluted earnings per share has been computed by dividing earnings available to common stockholders by the weighted average shares outstanding during the respective period, after adjusting for the potential dilution of options to purchase the Company's Common Stock, assumed vesting of restricted stock and the assumed conversion of the Company's convertible debt. The following table provides the computation of diluted weighted average number of common shares outstanding: Year Ended December 31, 2018 2017 2016 Computation of diluted weighted average shares outstanding: Basic weighted average shares outstanding 51,487,557 52,523,272 52,276,951 Incremental shares from assumed exercise of stock options and vesting of restricted stock 1,499,713 1,793,375 1,705,224 Incremental shares from assumed conversion of convertible debentures 1,640,477 799,680 18,904 Diluted weighted average shares outstanding 54,627,747 55,116,327 54,001,079 The table includes all stock options and restricted stock that are dilutive to the Company's weighted average common shares outstanding during the period. The calculation of diluted earnings per share excludes stock options or shares of restricted stock that are anti-dilutive to the Company's weighted average common shares outstanding for the years ended December 31, 2018 , 2017 and 2016 of approximately 458,000 , 798,000 and 616,000 , respectively. During 2018 , 2017 and 2016 , the Company had convertible notes outstanding that, if converted, could have a potentially dilutive effect on its Common Stock. The Company's convertible notes have settlement features requiring the Company, upon conversion, to settle the principal amount of the debt and the conversion value in excess of the principal value ("conversion premium") for cash or shares of the Company's Common Stock, at the Company's option. At issuance, the Company stated its intent to settle any conversion of these notes by paying cash for the principal value and issuing Common Stock for any conversion premium. Accordingly, the convertible notes are included in the calculation of diluted earnings per share if their inclusion is dilutive. The convertible notes would only have a dilutive effect if the market price per share of Common Stock exceeds the conversion price of $72.18 per share and the dilutive effect increases the more the market price exceeds the conversion price. As of December 31, 2018 , and currently, the Company maintains the intent and ability to settle any conversion as stated. As of December 31, 2018, 2017 and 2016, the stock prices exceeded the conversion price and these notes were dilutive to earnings per share. Further, as a result of the share prices increasing from $72.43 as of December 31, 2016 to $84.27 as of December 31, 2017 and to $102.38 as December 31, 2018, there were increases in dilutive shares from the assumed conversion of convertible notes. Therefore, according to ASC Topic 260, Earnings per Share (“ASC 260”) , the dilutive effect of the assumed conversion of the debentures was 1,640,477 , 799,680 and 18,904 shares for the years ended December 31, 2018 , 2017 and 2016 , respectively. See Note 10, Debt Obligations, to the Consolidated Financial Statements for more information about the convertible notes. Share repurchases The Company's Board of Directors has authorized a stock repurchase program ("Repurchase Program"), allowing Euronet to repurchase up to $375 million in value or 10.0 million shares of stock through March 31, 2020. Repurchases under the Repurchase Program may take place in the open market or in privately negotiated transactions, including derivative transactions, and may be made under a Rule 10b5-1 plan. For the year ended December 31, 2018 , the Company repurchased $175.0 million in value of Euronet Common Stock under the Repurchase Program. No repurchases were made during 2017. In January 2016, the Company announced that its Board of Directors authorized a stock repurchase program ("2016 Program") allowing the Company to repurchase up to $100 million in value or 5.0 million shares of its common stock through December 10, 2017. For the year end December 31, 2016, the Company repurchased 1.1 million shares at a weighted average purchase price of $65.74 for a total value of $75.6 million under the 2016 Program. Preferred Stock The Company has the authority to issue up to 10 million shares of preferred stock, of which no shares are currently issued or outstanding. Accumulated other comprehensive loss As of December 31, 2018 and 2017 , accumulated other comprehensive loss consists entirely of foreign currency translation adjustments. The Company recorded a foreign currency translation loss of $56.7 million , a gain of $116.4 million and a loss of $45.2 million for the years ended December 31, 2018 , 2017 , and 2016 , respectively. There were no reclassifications of foreign currency translation into the Consolidated Statements of Income for the years ended December 31, 2018 , 2017 , and 2016 . Dividends No dividends was paid on any class of the Company's stock during 2018, 2017, and 2016.

Acquisitions (Note)

Acquisitions (Note)	12 Months Ended
	Dec. 31, 2018
Acquisitions [Abstract]
Acquisitions	Acquisitions In accordance with ASC 805, the Company allocates the purchase price of its acquisitions to the tangible assets, liabilities and intangible assets acquired based on fair values. Any excess purchase price over those fair values is recorded as goodwill. The fair value assigned to intangible assets acquired is supported by valuations using estimates and assumptions provided by management. For certain large acquisitions, management engages an appraiser to assist in the valuation process. The Company completed the acquisitions of two small European businesses for an immaterial amount of cash consideration, completing one acquisition in the first quarter of 2018 and completing the other acquisition in the second quarter of 2018. The acquisitions have been accounted for as business combinations in accordance with U.S. GAAP and the results of operations have been included from the respective dates of acquisition in the EFT Processing Segment. There were no acquisitions in 2017.

Restricted Cash (Note)

Restricted Cash (Note)	12 Months Ended
	Dec. 31, 2018
Restricted Cash [Abstract]
Restricted Assets Disclosure [Text Block]	Restricted Cash The restricted cash balances as of December 31, 2018 and 2017 were as follows: As of December 31, (in thousands) 2018 2017 Cash held in trust and/or cash held on behalf of others $ 67,163 $ 67,541 Collateral on bank credit arrangements and other 9,432 13,833 Total $ 76,595 $ 81,374 Cash held in trust and/or cash held on behalf of others is in connection with the administration of the customer collection and vendor remittance activities by certain subsidiaries within the Company's epay and EFT Processing Segments. Amounts collected on behalf of certain mobile phone operators and/or merchants are deposited into a restricted cash account. The bank credit arrangements primarily represent cash collateral on deposit with commercial banks to cover guarantees.

Property and Equipment, Net (No

Property and Equipment, Net (Note)	12 Months Ended
	Dec. 31, 2018
PROPERTY AND EQUIPMENT, NET [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	Property and Equipment, Net The components of property and equipment, net of accumulated depreciation and amortization as of December 31, 2018 and 2017 are as follows: As of December 31, (in thousands) 2018 2017 ATMs $ 378,009 $ 329,159 POS terminals 36,521 41,218 Vehicles and office equipment 66,117 68,231 Computers and software 183,150 168,567 Land and buildings 1,252 1,256 665,049 608,431 Less accumulated depreciation and amortization (373,180 ) (340,128 ) Total $ 291,869 $ 268,303 Depreciation and amortization expense related to property and equipment, including property and equipment recorded under capital leases, for the years ended December 31, 2018 , 2017 and 2016 was $75.1 million , $63.4 million and $48.5 million , respectively.

Goodwill and Acquired Intangibl

Goodwill and Acquired Intangible Assets, Net (Note)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND ACQUIRED INTANGIBLE ASSETS, NET	Goodwill and Acquired Intangible Assets, Net Goodwill represents the excess of the purchase price of the acquired business over the estimated fair value of the underlying net tangible and intangible assets acquired. The following table summarizes intangible assets as of December 31, 2018 and 2017 : As of December 31, 2018 As of December 31, 2017 (in thousands) Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Customer relationships $ 199,581 $ (133,863 ) $ 207,133 $ (124,967 ) Trademarks and trade names 45,233 (25,837 ) 56,273 (25,768 ) Software 58,515 (29,420 ) 62,384 (25,142 ) Non-compete agreements 2,076 (1,800 ) 3,895 (3,265 ) Total $ 305,405 $ (190,920 ) $ 329,685 $ (179,142 ) The following table summarizes the goodwill and amortizable intangible assets activity for the years ended December 31, 2018 and 2017 : (in thousands) Acquired Intangible Assets Goodwill Total Intangible Assets Balance as of January 1, 2017 $ 165,331 $ 689,713 $ 855,044 Increases (decreases): Impairment (2,286 ) (31,770 ) (34,056 ) Amortization (24,527 ) — (24,527 ) Other (primarily changes in foreign currency exchange rates) 12,025 59,443 71,468 Balance as of December 31, 2017 150,543 717,386 867,929 Increases (decreases): Acquisitions — 20,742 20,742 Impairment (7,049 ) — (7,049 ) Amortization (22,562 ) — (22,562 ) Other (primarily changes in foreign currency exchange rates) (6,447 ) (33,931 ) (40,378 ) Balance as of December 31, 2018 $ 114,485 $ 704,197 $ 818,682 The Company performs its annual goodwill impairment test during the fourth quarter of each year. The annual goodwill impairment test completed during the fourth quarter of 2018 resulted in no impairment charges. During the fourth quarter of 2018, the Company recorded a $7.0 million non-cash impairment charge for acquired intangible assets, specifically the HiFX trade name, related to rebranding the HiFX business to xe. Of the total goodwill balance of $704.2 million as of December 31, 2018 , $467.6 million relates to the Money Transfer Segment, $130.9 million relates to the epay Segment and the remaining $105.7 million relates to the EFT Processing Segment. Amortization expense for intangible assets with finite lives was $22.6 million , $24.5 million and $25.5 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. Estimated annual amortization expense, before income taxes, on intangible assets with finite lives as of December 31, 2018 , is expected to total $20.5 million for 2019 , $19.7 million for 2020 , $18.8 million for 2021 , $17.8 million for 2022 and $13.1 million for 2023 .

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities (Note)	12 Months Ended
	Dec. 31, 2018
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract]
Other Liabilities Disclosure [Text Block]	Accrued Expenses and Other Current Liabilities The balances as of December 31, 2018 and 2017 were as follows: As of December 31, (in thousands) 2018 2017 Money transfer settlement obligations $ 310,710 $ 343,613 Accrued expenses 293,864 301,390 Accrued amounts due to mobile operators and other content providers 65,878 92,291 Derivative liabilities 36,102 22,495 Total $ 706,554 $ 759,789

Debt Obligations (Note)

Debt Obligations (Note)	12 Months Ended
	Dec. 31, 2018
Debt Disclosure [Abstract]
DEBT OBLIGATIONS	Debt Obligations Debt obligations consist of the following as of December 31, 2018 and 2017 : As of December 31, (in thousands) 2018 2017 Credit Facility: Revolving credit agreements $ 215,725 $ 3,000 Term loan, due 2019 — 51,094 215,725 54,094 Convertible Debt: 1.50% convertible notes, unsecured, due 2044 379,859 369,259 Other obligations 38,513 27,763 Total debt obligations $ 634,097 $ 451,116 Unamortized debt issuance costs (6,298 ) (5,816 ) Carrying value of debt $ 627,799 $ 445,300 Short-term debt obligations and current maturities of long-term debt obligations (38,017 ) (41,288 ) Long-term debt obligations $ 589,782 $ 404,012 As of December 31, 2018 , aggregate annual maturities of long-term debt are $0.5 million in 2019, $401.5 million in 2020 , none in 2021 and 2022, $215.7 million in 2023, and none thereafter. This maturity schedule reflects the revolving credit facility maturing in 2023 and the convertible notes maturing in 2020, coinciding with the terms of the initial put option by holders of the notes. Credit Facility In the early fourth quarter of 2018, the Company early retired the senior secured revolving bank credit facility (the "Credit Facility") with a syndicate of financial institutions. The Credit Facility was subsequently replaced by a new unsecured credit agreement for $1.0 billion that expires on October 17, 2023. Fees and interest on borrowings are based upon the Company's corporate credit rating and are based, in the case of letter of credit fees, on a margin , and in the case of interest, on a margin over London Inter-Bank Offered Rate (“LIBOR”) or a margin over the base rate, as selected by the Company, with the applicable margin ranging from 1.125% to 2.0% (or 0.175% to 1.0% for base rate loans). The new unsecured credit agreement allows for borrowings in Australian Dollars, British Pounds Sterling, Canadian Dollars, Czech Koruna, Danish Krone, Euros, Hungarian Forints, Japanese Yen, New Zealand Dollars, Norwegian Krone, Polish Zlotys, Swedish Krona, Swiss Francs, and U.S. Dollars. The revolving credit facility contains a $200 million sublimit for the issuance of letters of credit, a $50 million sublimit for U.S. Dollar swingline loans, and a $90 million sublimit for certain foreign currencies swingline loans. The retired Credit Facility provided an aggregate amount of $675 million , consisting of a $590 million five-year revolving credit facility, a $10 million five-year India revolving credit facility and a $75 million five-year term loan. Fees and interest on borrowings varied based upon the Company's consolidated total leverage ratio (as defined in the amended and restated credit agreement) and were based, in the case of letter of credit fees, on a margin, and in the case of interest, on a margin over LIBOR or a margin over the base rate, as selected by the Company, with the applicable margin ranging from 1.375% to 2.375% (or 0.375% to 1.375% for base rate loans). The base rate is the highest of (i) the Bank of America prime rate, (ii) the Federal Funds rate plus 0.50% or (iii) the Fixed LIBOR rate plus 1.00%. The term loan was subject to scheduled quarterly amortization payments, as set forth in the amended and restated credit agreement. The weighted average interest rates of the Company's borrowing under the unsecured credit agreement were 3.1% as of December 31, 2018 , and 2.9% and 2.8% for the retired term loan and Credit Facility, respectively, as of December 31, 2017 . As of December 31, 2018 and 2017 , the Company had stand-by letters of credit/bank guarantees outstanding against the revolving credit facilities of $47.1 million and $57.3 million , respectively. Stand-by letters of credit/bank guarantees reduce the Company's borrowing capacity under the revolving credit facility and are generally used to secure trade credit and performance obligations. As of December 31, 2018 and 2017 , the stand-by letters of credit interest charges were 1.1% and 1.4% per annum, respectively. The unsecured credit agreement contains customary affirmative and negative covenants, events of default and financial covenants, including: (i) as of the end of each fiscal quarter ended on March 31, September 30 and December 31, a Consolidated Total Leverage Ratio not to be greater than 3.5 to1.0; (ii) as of the end of each fiscal quarter ended on June 30, a Consolidated Total Leverage Ratio not to be greater than 4.0 to1.0; provided that, not more than two times prior to the expiration date, that a Material Acquisition has been consummated, for any period of four consecutive fiscal quarters following such Material Acquisition, the Consolidated Total Leverage Ratio will be not greater than 4.0 to1.0 for fiscal quarters ended on March 31, September 30 and December 31 and not greater than 4.5 to1.0 for fiscal quarters ended on June 30; provided, further, that following such four consecutive fiscal quarters for which the maximum Consolidated Total Leverage Ratio is increased, the maximum Consolidated Total Leverage Ratio shall revert to the levels set forth in clauses (i) and (ii) above for not fewer than two fiscal quarters before a subsequent Increase Notice is delivered to the syndicate of financial institutions; and (iii) a Consolidated Interest Coverage Ratio not less than 4.0 to 1.0. Subject to meeting certain leverage ratio and liquidity requirements as contained in the unsecured credit agreement, the Company is permitted to pay dividends, repurchase common stock and repurchase subordinated debt. The Company and certain subsidiaries have guaranteed the repayment of obligations under the credit agreement. Convertible Debt On October 30, 2014, the Company completed the sale of $402.5 million of Convertible Senior Notes due 2044 (“Convertible Notes”). The Convertible Notes have an interest rate of 1.5% per annum payable semi-annually in April and October, and are convertible into shares of Euronet Common Stock at a conversion price of approximately $72.18 per share if certain conditions are met (relating to the closing prices of Euronet Common Stock exceeding certain thresholds for specified periods). Holders of the Convertible Notes have the option to require the Company to purchase their notes at par on October 1, 2020, and have additional options to require the Company to purchase their notes at par on October 1, 2024, 2029, 2034, and 2039, or upon a change in control of the Company. In connection with the issuance of the Convertible Notes, the Company recorded $10.7 million in debt issuance costs, which are being amortized through October 1, 2020. Holders may convert all or any portion of their Convertible Notes at their option at any time prior to October 1, 2044 only under the following circumstances: (1) during any calendar quarter (and only during such calendar quarter), if the closing sale price of the common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than 130% of the conversion price on each applicable trading day; (2) during the five consecutive business day period after any ten consecutive trading day period (the measurement period) in which the trading price for the Convertible Notes for each trading day of the measurement period was less than 98% of the product of the closing sale price of the Company's common stock and the conversion rate on each such trading day; or (3) upon the occurrence of specified corporate events. If the holders exercise their option to convert, the Company is required to deliver cash or shares of the Company's Common Stock, at the Company's option, to satisfy the principal amount and the conversion premium. As of September 30, 2018 , the conversion threshold in clause (1) of the preceding sentence had been met and the Convertible Notes became convertible at the holders' option during the fourth quarter of 2018. During the fourth quarter of 2018, $1.0 million principal value of Convertible Notes were converted by holders. As of December 31, 2018, the conversion threshold was met and the Convertible Notes continue to be convertible at the holders' option during the first quarter of 2019. In accordance with ASC 470-20-30-27, proceeds from the issuance of convertible debt is allocated between debt and equity components so that debt is discounted to reflect the Company's nonconvertible debt borrowing rate. ASC 470-20-35-13 requires the debt discount to be amortized over the period the convertible debt is expected to be outstanding as additional non-cash interest expense. The allocation resulted in an increase to additional paid-in capital of $66.1 million . Contractual interest expense was $6.0 million for each of the years ended December 31, 2018 , 2017 and 2016 . Discount accretion was $11.5 million , $11.0 million and $10.4 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. As of December 31, 2018 and 2017 , the unamortized discounts were $21.6 million and $33.2 million , respectively. The discount will be amortized through October 1, 2020. The effective interest rate was 4.7% for the years ended December 31, 2018 and 2017 . Other obligations Certain of the Company's subsidiaries have available lines of credit and overdraft credit facilities that generally provide for short-term borrowings that are used from time to time for working capital purposes. As of December 31, 2018 and 2017 , borrowings under these arrangements were $38.5 million and $27.8 million , respectively. As of December 31, 2018 , there was $38.0 million due in 2019 under these other obligation arrangements.

Derivative Instruments and Hedg

Derivative Instruments and Hedging Activities (Note)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedges, Assets [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	Derivative Instruments and Hedging Activities The Company is exposed to foreign currency exchange risk resulting from (i) the collection of funds or the settlement of money transfer transactions in currencies other than the U.S. dollar, (ii) derivative contracts written to its customers in connection with providing cross-currency money transfer services and (iii) certain foreign currency denominated other asset and liability positions. The Company enters into foreign currency derivative contracts, primarily foreign currency forwards and cross-currency swaps, to minimize its exposure related to fluctuations in foreign currency exchange rates. As a matter of Company policy, the derivative instruments used in these activities are economic hedges and are not designated as hedges under ASC 815 , primarily due to either the relatively short duration of the contract term or the effects of fluctuations in currency exchange rates are reflected concurrently in earnings for both the derivative instrument and the transaction and have an offsetting effect. Foreign currency exchange contracts - Ria Operations and Corporate In the United States, the Company uses short-duration foreign currency forward contracts, generally with maturities up to 14 days , to offset the fluctuation in foreign currency exchange rates on the collection of money transfer funds between initiation of a transaction and its settlement. Due to the short duration of these contracts and the Company’s credit profile, the Company is generally not required to post collateral with respect to these foreign currency forward contracts. Most derivative contracts executed with counterparties in the U.S. are governed by an International Swaps and Derivatives Association agreement that includes standard netting arrangements; therefore, asset and liability positions from forward contracts and all other foreign exchange transactions with the same counterparty are net settled upon maturity. As of December 31, 2018 , the Company had foreign currency forward contracts outstanding in the U.S. with a notional value of $251.1 million , primarily in Australian dollars, Canadian dollars, British pounds, euros and Mexican pesos. In addition, the Company uses forward contracts, typically with maturities from a few days to less than one year, to offset foreign exchange rate fluctuations on certain short-term borrowings that are payable in currencies other than the U.S dollar. As of December 31, 2018 , the Company had foreign currency forward contracts outstanding with a notional value of $64.3 million , primarily in euros. Foreign currency exchange contracts - HiFX Operations HiFX, writes derivative instruments, primarily foreign currency forward contracts and cross-currency swaps, mostly with counterparties comprised of individuals and small-to-medium size businesses and derives a currency margin from this activity as part of its operations. HiFX aggregates its foreign currency exposures arising from customer contracts and hedges the resulting net currency risks by entering into offsetting contracts with established financial institution counterparties. Foreign exchange revenues from HiFX's total portfolio of positions were $69.2 million , $72.5 million and $66.0 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. All of the derivative contracts used in the Company' s HiFX operations are economic hedges and are not designated as hedges under ASC 815 . The duration of these derivative contracts is generally less than one year. The fair value of HiFX's total portfolio of positions can change significantly from period to period based on, among other factors, market movements and changes in customer contract positions. HiFX manages counterparty credit risk (the risk that counterparties will default and not make payments according to the terms of the agreements) on an individual counterparty basis. It mitigates this risk by entering into contracts with collateral posting requirements and/or by performing financial assessments prior to contract execution, conducting periodic evaluations of counterparty performance and maintaining a diverse portfolio of qualified counterparties. HiFX does not expect any significant losses from counterparty defaults. The aggregate equivalent U.S. dollar notional amounts of foreign currency derivative customer contracts held by the Company in its HiFX operations as of December 31, 2018 was approximately $1.8 billion . The significant majority of customer contracts are written in major currencies such as the euro, U.S. dollar, British pound, Australian dollar and New Zealand dollar. Balance Sheet Presentation The following table summarizes the fair value of the derivative instruments as recorded in the Consolidated Balance Sheets as of the dates below: Asset Derivatives Liability Derivatives Fair Value Fair Value (in thousands) Balance Sheet Location December 31, 2018 December 31, 2017 Balance Sheet Location December 31, 2018 December 31, 2017 Derivatives not designated as hedging instruments Foreign currency exchange contracts Other current assets $ 44,637 $ 36,574 Other current liabilities $ (36,102 ) $ (22,495 ) The following tables summarize the gross and net fair value of derivative assets and liabilities as of December 31, 2018 and 2017 (in thousands): Offsetting of Derivative Assets Gross Amounts Not Offset in the Consolidated Balance Sheet As of December 31, 2018 Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts Presented in the Consolidated Balance Sheet Financial Instruments Cash Collateral Received Net Amounts Derivatives subject to a master netting arrangement or similar agreement $ 44,637 $ — $ 44,637 $ (25,187 ) $ (9,918 ) $ 9,532 As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ 36,574 $ — $ 36,574 $ (15,050 ) $ (7,603 ) $ 13,921 Offsetting of Derivative Liabilities Gross Amounts Not Offset in the Consolidated Balance Sheet As of December 31, 2018 Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts Presented in the Consolidated Balance Sheet Financial Instruments Cash Collateral Paid Net Amounts Derivatives subject to a master netting arrangement or similar agreement $ (36,102 ) $ — $ (36,102 ) $ 25,187 $ 2,048 $ (8,867 ) As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ (22,495 ) $ — $ (22,495 ) $ 15,050 $ 2,716 $ (4,729 ) Income Statement Presentation The following tables summarize the location and amount of gains on derivatives in the Consolidated Statements of Income for the years ended December 31, 2018 , 2017 and 2016 : Amount of Gain Recognized in Income on Derivative Contracts (a) Location of Gain (Loss) Recognized in Income on Derivative Contracts Year Ended December 31, (in thousands) 2018 2017 2016 Foreign currency exchange contracts - Ria Operations Foreign currency exchange gain, net $ 173 $ 175 $ 143 (a) The Company enters into derivative contracts such as foreign currency exchange forwards and cross-currency swaps as part of its HiFX operations. These derivative contracts are excluded from this table as they are part of the broader disclosure of foreign currency exchange revenues for this business discussed above. See Note 17, Financial Instruments and Fair Value Measurements, for the determination of the fair values of derivatives.

Leases (Note)

Leases (Note)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Leases of Lessee Disclosure [Text Block]	Leases Capital leases The Company leases certain of its ATMs, computer equipment and vehicles under capital lease agreements that expire between the years of 2019 and 2023 and bear interest at rates between 0.8% and 13.0% . The lessors for these leases hold a security interest in the equipment leased under the respective capital lease agreements. Lease installments are paid on a monthly, quarterly or semi-annual basis. Certain leases contain a bargain purchase option at the conclusion of the lease period. The gross amount of the assets and related accumulated amortization recorded within property and equipment and subject to capital leases as of December 31, 2018 and 2017 were as follows: As of December 31, (in thousands) 2018 2017 ATMs $ 28,370 $ 23,969 Other 2,248 2,268 Subtotal 30,618 26,237 Less accumulated amortization (11,731 ) (9,395 ) Total $ 18,887 $ 16,842 Non-cash financing and investing activities for the years ended December 31, 2018 , 2017 and 2016 represented capital lease obligations of $6.9 million , $7.9 million and $5.8 million , respectively, incurred when the Company entered into leases primarily for new ATMs, to upgrade ATMs or for data center computer equipment. Operating leases The Company has non-cancelable operating leases that expire between the years of 2019 and 2033 . Certain of these leases contain renewal options and escalation provisions. The Company recognizes rent expense under the straight-line method over the term of the lease. Rent expense for the years ended December 31, 2018 , 2017 and 2016 amounted to $132.8 million , $105.0 million and $80.0 million , respectively. Future minimum lease payments Future minimum lease payments under the capital leases and the non-cancelable operating leases (with initial lease terms in excess of one year) as of December 31, 2018 are: (in thousands) Capital Leases Operating Leases Year ending December 31, 2019 $ 6,150 $ 80,803 2020 4,583 65,590 2021 3,240 49,052 2022 944 37,823 2023 60 30,192 Thereafter — 48,191 Total minimum lease payments 14,977 $ 311,651 Less amounts representing interest (1,320 ) Present value of net minimum capital lease payments 13,657 Less current portion of obligations under capital leases (5,458 ) Obligations under capital leases, less current portion $ 8,199

Income Taxes (Note)

Income Taxes (Note)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	Income Taxes Tax Cuts and Jobs Act of 2017 We calculate our provision for federal, state and international income taxes based on current tax law. On December 22, 2017, the U.S. enacted into law what is informally called the Tax Cuts and Jobs Act of 2017 ("U.S. Tax Reform"). The most significant provisions of U.S. Tax Reform are the transition tax on previously undistributed foreign earnings of foreign subsidiaries, the reduction of the U.S. corporate statutory income tax rate from 35% to 21% beginning on January 1, 2018, and new taxes on certain foreign sourced earnings. Under the accounting rules, companies are required to recognize the effects of changes in tax laws and tax rates on deferred tax assets and liabilities in the period in which the new legislation is enacted. The SEC staff issued Staff Accounting Bulletin ("SAB") 118, which provides guidance on accounting for the tax effects of U.S. Tax Reform. SAB 118 provides a measurement period of up to one year from enactment date for companies to complete their accounting. In accordance with SAB 118, the Company recorded a net provisional tax expense of $41.6 million resulting from the enactment of U.S. Tax Reform. Included in the net tax expense was a current tax expense of $28.1 million . The remaining tax expense of $13.5 million was largely the required remeasurement of the Company's U.S. deferred tax assets and liabilities considering the new statutory tax rate. In the fourth quarter of 2018 the Company completed its accounting for the tax effects of U.S. Tax Reform. The net tax expense decreased by approximately $12.3 million to $29.3 million largely due to changes in the transition tax calculations. The current tax expense is $15.0 million and the deferred tax expense is $14.3 million . The Company elected to pay the transition tax over 8 years. The Company continues to evaluate the indefinite reinvestment assertion on foreign earnings in conjunction with the tax effects of U.S. Tax Reform. This includes the tax impacts of the global intangible low-taxed income ("GILTI") provision on current foreign earnings. The FASB issued guidance that allows for either recognizing deferred taxes for temporary differences expected to reverse as GILTI in future years or recognizing such taxes as current period expenses when incurred. The Company elected to recognize the tax effects of GILTI as a current period expense. The sources of income before income taxes for the years ended December 31, 2018 , 2017 and 2016 are presented as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Income before taxes: United States $ 35,467 $ 55,117 $ 41,804 Foreign 259,449 201,218 191,089 Total income before income taxes $ 294,916 $ 256,335 $ 232,893 The Company's income tax expense for the years ended December 31, 2018 , 2017 and 2016 consisted of the following: Year Ended December 31, (in thousands) 2018 2017 2016 Current tax expense (benefit): U.S. $ (8,711 ) $ 29,620 $ (2,886 ) Foreign 70,244 79,475 59,515 Total current 61,533 109,095 56,629 Deferred tax expense (benefit): U.S. 6,871 14,056 9,908 Foreign (5,619 ) (23,756 ) (7,742 ) Total deferred 1,252 (9,700 ) 2,166 Total tax expense $ 62,785 $ 99,395 $ 58,795 The following is a reconciliation of the federal statutory income tax rates of 21% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016 to the effective income tax rate for the same years: Year Ended December 31, (dollar amounts in thousands) 2018 2017 2016 U.S. federal income tax expense at applicable statutory rate $ 61,932 $ 89,684 $ 81,513 Tax effect of: State income tax expense (benefit) at statutory rates 1,680 968 1,341 Non-deductible expenses 3,457 5,648 3,482 Share-based compensation (13,750 ) (4,845 ) (1 ) Other permanent differences (6,141 ) 8,458 (4,929 ) Difference between U.S. federal and foreign tax rates 9,843 (24,270 ) (18,432 ) Provision in excess of statutory rates 3,737 8,426 2,490 Change in federal and foreign valuation allowance 3,075 (30,224 ) (8,163 ) Impairment of goodwill and acquired intangibles assets 83 8,248 — GILTI, net of tax credits 14,111 — — U.S. Tax Reform - transition tax and rate change (12,262 ) 41,597 — Other (2,980 ) (4,295 ) 1,494 Total income tax expense $ 62,785 $ 99,395 $ 58,795 Effective tax rate 21.3 % 38.8 % 25.2 % The tax effect of temporary differences and carryforwards that give rise to deferred tax assets and liabilities from continuing operations are as follows: As of December 31, (in thousands) 2018 2017 Deferred tax assets: Tax loss carryforwards $ 32,564 $ 25,494 Share-based compensation 7,395 7,244 Accrued expenses 17,242 14,621 Property and equipment 16,377 14,984 Goodwill and intangible amortization 10,619 13,866 Intercompany notes 6,913 9,596 Accrued revenue 36,273 32,947 Other 11,876 9,631 Gross deferred tax assets 139,259 128,383 Valuation allowance (21,857 ) (20,257 ) Net deferred tax assets 117,402 108,126 Deferred tax liabilities: Intangible assets related to purchase accounting (22,877 ) (29,361 ) Goodwill and intangible amortization (16,115 ) (11,537 ) Accrued expenses (28,274 ) (33,728 ) Intercompany notes (14,034 ) (7,348 ) Accrued interest (32,372 ) (27,449 ) Capitalized research and development (8,299 ) (7,020 ) Property and equipment (8,408 ) (4,717 ) Accrued revenue (4,388 ) (5,027 ) Other (5,841 ) (3,227 ) Total deferred tax liabilities (140,608 ) (129,414 ) Net deferred tax liabilities $ (23,206 ) $ (21,288 ) Subsequently recognized tax benefits relating to the valuation allowance for deferred tax assets as of December 31, 2018 are expected to be allocated to income taxes in the Consolidated Statements of Income. As of December 31, 2018 , and 2017 , the Company's foreign tax loss carryforwards were $109.8 million and $90.2 million , respectively, and U.S. state tax loss carryforwards were $91.8 million and $59.1 million , respectively. In assessing the Company's ability to realize deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment. Based upon the level of historical taxable income and projections for future taxable income over the periods in which the deferred tax assets are deductible, management believes it is more likely than not the Company will only realize the benefits of these deductible differences, net of the existing valuation allowances, as of December 31, 2018 . As of December 31, 2018 , the Company had foreign tax net operating loss carryforwards of $109.8 million , which will expire as follows: (in thousands) Gross Tax Effected Year ending December 31, 2019 $ 1,227 $ 296 2020 1,926 419 2021 5,931 1,361 2022 1,847 418 2023 3,049 699 Thereafter 58,772 14,555 Unlimited 37,069 8,486 Total $ 109,821 $ 26,234 In addition, the Company's state tax net operating loss carryforwards of $91.8 million will expire periodically from 2019 through 2038 . While U.S. tax expense has been recognized as a result of the transition tax and GILTI provisions of U.S. Tax Reform, the Company has not provided additional deferred taxes, if any, on undistributed earnings attributable to foreign subsidiaries that have been considered to be reinvested indefinitely. Gross undistributed earnings reinvested indefinitely in foreign subsidiaries aggregated approximately $1,478 million as of December 31, 2018 . Other than the transition tax and GILTI provisions of U.S. Tax Reform, no deferred tax liabilities with respect to items such as certain foreign exchange gains or losses, foreign withholding taxes or additional state taxes have been recognized and it is not practical to determine the income tax liability that would be payable if such earnings were not reinvested indefinitely. Accounting for uncertainty in income taxes A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2018 and 2017 is as follows: Year Ended December 31, (in thousands) 2018 2017 Beginning balance $ 28,537 $ 17,988 Additions based on tax positions related to the current year 4,787 8,364 Additions for tax positions of prior years 966 3,157 Reductions for tax positions of prior years (1,705 ) — Settlements (807 ) (321 ) Statute of limitations expiration (863 ) (651 ) Ending balance $ 30,915 $ 28,537 As of December 31, 2018 and 2017 , approximately $28.0 million and $26.7 million , respectively, of the unrecognized tax benefits would impact the Company's provision for income taxes and effective income tax rate, if recognized. Total estimated accrued interest and penalties related to the underpayment of income taxes was $4.4 million and $3.5 million as of December 31, 2018 and 2017 , respectively. The following income tax years remain open in the Company's major jurisdictions as of December 31, 2018 : Jurisdictions Periods U.S. (Federal) 2014 through 2018 Spain 2009 through 2018 Australia 2011 through 2018 U.K. 2009 through 2018 Germany 2013 through 2018 It is reasonably possible that the balance of gross unrecognized tax benefits could significantly change within the next twelve months as a result of the resolution of audit examinations and expirations of certain statutes of limitations and, accordingly, materially affect the Company's operating results. At this time, it is not possible to estimate the range of change due to the uncertainty of potential outcomes.

Valuation and Qualifying Accoun

Valuation and Qualifying Accounts (Note)	12 Months Ended
	Dec. 31, 2018
Valuation and Qualifying Accounts [Abstract]
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	Valuation and Qualifying Accounts Accounts receivable balances are stated net of allowance for doubtful accounts. Historically, the Company has not experienced significant write-offs. The Company records allowances for doubtful accounts when it is probable that the accounts receivable balance will not be collected. The following table provides a summary of the allowance for doubtful accounts balances and activity for the years ended December 31, 2018 , 2017 and 2016 : Year Ended December 31, (in thousands) 2018 2017 2016 Beginning balance-allowance for doubtful accounts $ 20,958 $ 18,369 $ 19,140 Additions-charged to expense 8,653 6,631 6,556 Amounts written off (4,079 ) (5,944 ) (6,839 ) Other (primarily changes in foreign currency exchange rates) (1,245 ) 1,902 (488 ) Ending balance-allowance for doubtful accounts $ 24,287 $ 20,958 $ 18,369

Stock Plans (Note)

Stock Plans (Note)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	Stock Plans The Company has share-based compensation plans (“SCP”) that allow it to grant restricted shares, or options to purchase shares, of Common Stock to certain current and prospective key employees, directors and consultants of the Company. These awards generally vest over periods ranging from three to five years from the date of grant, are generally exercisable during the shorter of a ten-year term or the term of employment with the Company. With the exception of certain awards made to the Company's employees in Germany, Singapore and Malaysia, awards under the SCP are settled through the issuance of new shares under the provisions of the SCP. For Company employees in Germany, Singapore and Malaysia, certain awards are settled through the issuance of treasury shares, which also reduces the number of shares available for future issuance under the SCP. As of December 31, 2018 , the Company has approximately 3.1 million in total shares remaining available for issuance under the SCP. Share-based compensation expense was $16.8 million , $15.6 million and $15.0 million for the years ended December 31, 2018 , 2017 and 2016 , respectively, and was recorded in salaries and benefits expense in the accompanying Consolidated Statements of Income. The Company recorded a tax benefit of $2.7 million , $2.3 million and $1.0 million during the years ended December 31, 2018 , 2017 and 2016 , respectively, for the portion of this expense that relates to foreign tax jurisdictions in which an income tax benefit is expected to be derived. Stock options Summary stock options activity is presented in the table below: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value (thousands) Balance at December 31, 2017 (2,206,415 shares exercisable) 3,231,493 $ 42.42 Granted 264,982 $ 111.45 Exercised (892,344 ) $ 19.35 Forfeited/Canceled (41,561 ) $ 72.88 Balance at December 31, 2018 2,562,570 $ 57.10 5.9 $ 118,448 Exercisable at December 31, 2018 1,637,801 $ 39.64 4.5 $ 102,752 Vested and expected to vest at December 31, 2018 2,203,542 $ 49.53 5.4 $ 116,461 Options outstanding that are expected to vest are net of estimated future forfeitures. The Company received cash of $17.1 million , $9.5 million and $4.1 million in connection with stock options exercised in the years ended December 31, 2018 , 2017 and 2016 , respectively. The intrinsic value of these options exercised was $73.0 million , $23.2 million and $12.3 million in the years ended December 31, 2018 , 2017 and 2016 , respectively. As of December 31, 2018 , unrecognized compensation expense related to nonvested stock options that are expected to vest totaled $21.6 million and will be recognized over the next 5 years, with an overall weighted-average period of 3.7 years. The following table provides the fair value of options granted under the SCP during 2018 , 2017 and 2016 , together with a description of the assumptions used to calculate the fair value using the Black-Scholes-Merton option-pricing model: Year ended December 31, 2018 2017 2016 Volatility 29.8 % 28.8 % 33.3 % Risk-free interest rate - weighted average 2.8 % 2.2 % 2.0 % Risk-free interest rate - range (a) (a) 1.29% to 2.01% Dividend yield — % — % — % Assumed forfeitures 8.0 % 8.0 % 8.0 % Expected lives 5.6 years 5.5 years 5.5 years Weighted-average fair value (per share) $ 37.16 $ 28.59 $ 25.29 (a) At the date of grant, the risk fee rate for stock options awarded in 2018 and 2017 was 2.8% and 2.2%, respectively. Restricted stock Restricted stock awards vest based on the achievement of time-based service conditions and/or performance-based conditions. For certain awards, vesting is based on the achievement of more than one condition of an award with multiple time-based and/or performance-based conditions. Summary restricted stock activity is presented in the table below: Number of Shares Weighted Average Grant Date Fair Value Per Share Nonvested at December 31, 2017 432,336 $ 72.09 Granted 103,304 $ 107.88 Vested (150,339 ) $ 62.83 Forfeited (13,460 ) $ 72.00 Nonvested at December 31, 2018 371,841 $ 85.78 The fair value of shares vested in the years ended December 31, 2018 , 2017 and 2016 was $14.2 million , $13.1 million and $13.3 million , respectively. As of December 31, 2018 , there was $10.9 million of total unrecognized compensation cost related to unvested time-based restricted stock, which is expected to be recognized over a weighted-average period of 3.6 years. As of December 31, 2018 , there was $9.8 million of total unrecognized compensation costs related to unvested performance-based restricted stock, which is expected to be recognized based on Company performance over a weighted-average period of 1.8 years. The weighted average grant date fair value of restricted stock granted during the years ended December 31, 2018 , 2017 and 2016 was $107.88 , $91.28 and $73.86 per share, respectively. Employee stock purchase plan The Company has a qualified Employee Stock Purchase Plan (the “ESPP”), which allows qualified employees (as defined by the plan documents) to participate in the purchase of rights to purchase designated shares of the Company's Common Stock at a price equal to the lower of 85% of the closing price at the beginning or end of each quarterly offering period. The Company reserved 1,000,000 shares of Common Stock for purchase under the ESPP. Pursuant to the ESPP, during the years ended December 31, 2018 , 2017 and 2016 , the Company issued 21,872 , 21,547 and 34,658 rights, respectively, to purchase shares of Common Stock at a weighted average price per share of $71.08 , $69.06 and $59.69 , respectively. The grant date fair value of the option to purchase shares at the lower of the closing price at the beginning or end of the quarterly period, plus the actual total discount provided, are recorded as compensation expense. Total compensation expense recorded was $0.4 million , $0.4 million , and $0.5 million for the years ended December 31, 2018 , 2017 and 2016 , respectively. The following table provides the weighted-average fair value of the ESPP stock purchase rights during the years ended December 31, 2018 , 2017 and 2016 and the assumptions used to calculate the fair value using the Black-Scholes-Merton option-pricing model: Year Ended December 31, 2018 2017 2016 Volatility - weighted average 30.1 % 18.4 % 36.3 % Volatility - range 23.5% to 36.7% 14.6% to 27.2% 20.0% to 50.1% Risk-free interest rate - weighted average 2.01 % 0.89 % 0.24 % Risk-free interest rate - range 1.73% to 2.45% 0.51% to 1.39% 0.22% to 0.29% Dividend yield — % — % — % Expected lives 3 months 3 months 3 months Weighted-average fair value (per share) $ 17.22 $ 15.81 $ 14.42

Segment Information (Note)

Segment Information (Note)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
SEGMENT INFORMATION	Business Segment Information Euronet’s reportable operating segments have been determined in accordance with ASC Topic 280, Segment Reporting (“ASC 280”) . The Company currently operates in the following three reportable operating segments: 1) Through the EFT Processing Segment, the Company processes transactions for a network of ATMs and POS terminals across Europe, the Middle East and Asia Pacific. The Company provides comprehensive electronic payment solutions consisting of ATM cash withdrawal services, ATM network participation, outsourced ATM and POS management solutions, credit and debit card outsourcing, dynamic currency conversion, domestic and international surcharge and other value added services. Through this segment, the Company also offers a suite of integrated electronic financial transaction software solutions for electronic payment and transaction delivery systems. 2) Through the epay Segment, the Company provides distribution, processing and collection services for prepaid mobile airtime and other electronic payment products in Europe, the Middle East, Asia Pacific, the U.S. and South America. 3) Through the Money Transfer Segment, the Company provides global money transfer services under the brand names, Ria, IME, HiFX, and xe. Ria and IME provide global consumer-to-consumer money transfer services through a network of sending agents, Company-owned stores and Company-owned websites, disbursing money transfers through a worldwide correspondent network. HiFX and xe offer account-to-account international payment services to high-income individuals and small-to-medium sized businesses. xe is also a provider of foreign currency exchange information. The Company also offers customers bill payment services, payment alternatives such as money orders and prepaid debit cards, comprehensive check cashing services, foreign currency exchange services and mobile top-up. The Company provides cash management solutions and foreign currency risk management services to small-to-medium sized businesses under the brand name HiFM. In addition, the Company accounts for non-operating activity, share-based compensation expense, certain intersegment eliminations and the costs of providing corporate and other administrative services in its administrative division, “Corporate Services, Eliminations and Other.” These services are not directly identifiable with the Company’s reportable operating segments. The following tables present the Company’s reportable segment results for the years ended December 31, 2018 , 2017 and 2016 : For the Year Ended December 31, 2018 (in thousands) EFT Processing epay Money Transfer Corporate Services, Eliminations and Other Consolidated Total revenues $ 753,651 $ 743,784 $ 1,042,962 $ (3,768 ) $ 2,536,629 Operating expenses: Direct operating costs 366,977 564,252 560,930 (3,753 ) 1,488,406 Salaries and benefits 75,791 57,748 194,808 32,085 360,432 Selling, general and administrative 46,925 35,749 125,647 8,486 216,807 Acquired intangible assets impairment — — 7,049 — 7,049 Depreciation and amortization 66,713 7,038 32,002 268 106,021 Total operating expenses 556,406 664,787 920,436 37,086 2,178,715 Operating income (expense) $ 197,245 $ 78,997 $ 122,526 $ (40,854 ) $ 357,914 Other income (expense) Interest income 1,320 Interest expense (37,573 ) Loss from unconsolidated affiliates (117 ) Foreign currency exchange loss, net (26,655 ) Other gains, net 27 Total other expense, net (62,998 ) Income before income taxes $ 294,916 Segment assets as of December 31, 2018 $ 1,220,141 $ 780,220 $ 1,310,775 $ 10,019 $ 3,321,155 Property and equipment, net as of December 31, 2018 $ 215,106 $ 31,172 $ 45,517 $ 74 $ 291,869 For the Year Ended December 31, 2017 (in thousands) EFT Processing epay Money Transfer Corporate Services, Eliminations and Other Consolidated Total revenues $ 634,559 $ 733,998 $ 886,858 $ (2,993 ) $ 2,252,422 Operating expenses: Direct operating costs 318,875 564,032 476,322 (2,979 ) 1,356,250 Salaries and benefits 61,683 54,459 168,371 26,274 310,787 Selling, general and administrative 33,158 36,014 108,022 13,108 190,302 Goodwill and acquired intangible assets impairment 2,286 31,770 — — 34,056 Depreciation and amortization 55,660 9,622 29,598 150 95,030 Total operating expenses 471,662 695,897 782,313 36,553 1,986,425 Operating income (expense) $ 162,897 $ 38,101 $ 104,545 $ (39,546 ) $ 265,997 Other income (expense) Interest income 2,443 Interest expense (32,571 ) Income from unconsolidated affiliates 48 Foreign currency exchange gain, net 20,300 Other gains, net 118 Total other expense, net (9,662 ) Income before income taxes $ 256,335 Segment assets as of December 31, 2017 $ 1,040,135 $ 695,990 $ 1,255,765 $ 148,139 $ 3,140,029 Property and equipment, net as of December 31, 2017 $ 196,451 $ 28,135 $ 43,564 $ 153 $ 268,303 For the Year Ended December 31, 2016 (in thousands) EFT Processing epay Money Transfer Corporate Services, Eliminations and Other Consolidated Total revenues $ 464,254 $ 693,986 $ 801,919 $ (1,544 ) $ 1,958,615 Operating expenses: Direct operating costs 224,793 528,774 422,508 (1,530 ) 1,174,545 Salaries and benefits 51,822 51,378 155,471 29,749 288,420 Selling, general and administrative 30,399 34,517 93,219 7,213 165,348 Depreciation and amortization 40,084 11,075 29,195 175 80,529 Total operating expenses 347,098 625,744 700,393 35,607 1,708,842 Operating income (expense) $ 117,156 $ 68,242 $ 101,526 $ (37,151 ) $ 249,773 Other income (expense) Interest income 1,696 Interest expense (28,332 ) Foreign currency exchange loss, net (10,200 ) Other gains, net 19,956 Total other expense, net (16,880 ) Income before income taxes $ 232,893 Segment assets as of December 31, 2016 $ 786,166 $ 733,514 $ 1,136,722 $ 56,470 $ 2,712,872 Property and equipment, net as of December 31, 2016 $ 139,161 $ 23,939 $ 38,954 $ 91 $ 202,145 Total revenues for the years ended December 31, 2018 , 2017 and 2016 , and property and equipment and total assets as of December 31, 2018 and 2017 , summarized by geographic location, were as follows: Revenues Property and Equipment, net Total Assets For the year ended December 31, as of December 31, as of December 31, (in thousands) 2018 2017 2016 2018 2017 2018 2017 United States $ 721,977 $ 572,383 $ 548,877 $ 29,499 $ 28,465 $ 493,428 $ 592,187 Germany 476,122 495,778 409,590 25,302 20,668 508,062 435,687 Spain 155,619 115,473 82,921 39,238 29,881 198,082 152,841 United Kingdom 133,132 136,977 131,826 20,525 20,104 519,918 532,421 Poland 126,513 128,672 115,269 50,359 61,636 155,821 176,766 Italy 103,691 89,276 72,591 15,238 12,078 157,314 123,218 India 92,468 82,389 75,243 19,554 13,090 89,923 82,513 Malaysia 76,380 56,287 53,787 2,802 3,161 103,043 124,522 France 75,466 56,027 43,247 1,037 1,104 76,687 65,366 Greece 71,007 71,197 44,361 11,267 10,012 58,419 62,552 Australia 58,039 77,777 77,198 2,051 2,704 61,215 76,370 New Zealand 48,881 47,091 40,890 2,718 2,574 196,869 185,459 Other 397,334 323,095 262,815 72,279 62,826 702,374 530,127 Total foreign 1,814,652 1,680,039 1,409,738 262,370 239,838 2,827,727 2,547,842 Total $ 2,536,629 $ 2,252,422 $ 1,958,615 $ 291,869 $ 268,303 $ 3,321,155 $ 3,140,029 Revenues are attributed to countries based on location of the customer, with the exception of software sales made by the Company's software subsidiary, which are attributed to the U.S.

Fair Value Measurements (Note)

Fair Value Measurements (Note)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	Financial Instruments and Fair Value Measurements Concentrations of credit risk The Company's credit risk primarily relates to trade accounts receivable and cash and cash equivalents. The EFT Processing Segment's customer base includes the most significant international card organizations and certain banks in its markets. The epay Segment's customer base is diverse and includes several major retailers and/or distributors in markets that they operate. The Money Transfer Segment trade accounts receivable are primarily due from independent agents that collect cash from customers on the Company's behalf and generally remit the cash within one week. The Company performs ongoing evaluations of its customers' financial condition and limits the amount of credit extended, or purchases credit enhancement protection, when deemed necessary, but generally requires no collateral. See Note 14, Valuation and Qualifying Accounts, for further disclosure. The Company invests excess cash not required for use in operations primarily in high credit quality, short-term duration securities that the Company believes bear minimal risk. Fair value measurements Fair value measurements used in the consolidated financial statements are based upon the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The fair value hierarchy distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs). The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The three levels of the fair value hierarchy are described below: • Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities. • Level 2 – Valuations based on quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable data for substantially the full term of the assets or liabilities. • Level 3 – Unobservable inputs in which little or no market activity exists, therefore requiring an entity to develop its own assumptions about the inputs that market participants would use in pricing. The following table details financial assets measured and recorded at fair value on a recurring basis: As of December 31, 2018 (in thousands) Balance Sheet Classification Level 1 Level 2 Level 3 Total Assets Foreign currency exchange contracts Other current assets $ — $ 44,637 $ — $ 44,637 Liabilities Foreign currency exchange contracts Other current liabilities $ — (36,102 ) $ — $ (36,102 ) As of December 31, 2017 (in thousands) Balance Sheet Classification Level 1 Level 2 Level 3 Total Assets Foreign currency exchange contracts Other current assets $ — $ 36,574 $ — $ 36,574 Liabilities Foreign currency exchange contracts Other current liabilities $ — $ (22,495 ) $ — $ (22,495 ) The carrying amounts of cash and cash equivalents, trade accounts receivable, trade accounts payable and short-term debt obligations approximate fair values due to their short maturities. The carrying values of the Company’s revolving credit agreements approximate fair values because interest is based on LIBOR that resets at various intervals of less than one year. The Company estimates the fair value of the Convertible Notes using quoted prices in inactive markets for identical liabilities (Level 2). As of December 31, 2018 and 2017 , the fair values of the Convertible Notes were $571.6 million and $503.7 million , respectively, with carrying values of $379.9 million and $369.3 million , respectively.

Litigation and Contingencies (N

Litigation and Contingencies (Note)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
CONTINGENCIES	Litigation and Contingencies From time to time, the Company is a party to legal and regulatory proceedings arising in the ordinary course of its business. Currently, there are no legal proceedings or regulatory findings that management believes, either individually or in the aggregate, would have a material adverse effect upon the consolidated financial statements of the Company. In accordance with U.S. GAAP, the Company records a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated. These provisions are reviewed at least quarterly and adjusted to reflect the impacts of negotiations, settlements, rulings, advice of legal counsel, and other information and events pertaining to a particular case

Commitments (Note)

Commitments (Note)	12 Months Ended
	Dec. 31, 2018
Guarantees [Abstract]
GUARANTEES	Commitments As of December 31, 2018 , the Company had $77.8 million of stand-by letters of credit/bank guarantees issued on its behalf, of which $3.9 million are collateralized by cash deposits held by the respective issuing banks. Under certain circumstances, the Company grants guarantees in support of obligations of subsidiaries. As of December 31, 2018 , the Company granted off balance sheet guarantees for cash in various ATM networks amounting to $22.9 million over the terms of the cash supply agreements and performance guarantees amounting to approximately $61.7 million over the terms of the agreements with the customers. From time to time, the Company enters into agreements with commercial counterparties that contain indemnification provisions, the terms of which may vary depending on the negotiated terms of each respective agreement. The amount of such potential obligations is generally not stated in the agreements. Euronet's liability under such indemnification provisions may be mitigated by relevant insurance coverage and may be subject to time and materiality limitations, monetary caps and other conditions and defenses. Such indemnification obligations include the following: • In connection with contracts with financial institutions in the EFT Processing Segment, the Company is responsible for damage to ATMs and theft of ATM network cash that, generally, is not recorded on the Company’s Consolidated Balance Sheets. As of December 31, 2018 , the balance of cash used in the Company's ATM networks for which the Company was responsible was approximately $523 million . The Company maintains insurance policies to mitigate this exposure; • In connection with contracts with financial institutions in the EFT Processing Segment, the Company is responsible for losses suffered by its customers and other parties as a result of the breach of its computer systems, including in particular, losses arising from fraudulent transactions made using information stolen through its processing systems. The Company maintains insurance policies to mitigate this exposure; • In connection with the license of proprietary systems to customers, the Company provides certain warranties and infringement indemnities to the licensee, which generally warrant that such systems do not infringe on intellectual property owned by third parties and that the systems will perform in accordance with their specifications; • Euronet has entered into purchase and service agreements with vendors and consulting agreements with providers of consulting services, pursuant to which the Company has agreed to indemnify certain of such vendors and consultants, respectively, against third-party claims arising from the Company’s use of the vendor’s product or the services of the vendor or consultant; • In connection with acquisitions and dispositions of subsidiaries, operating units and business assets, the Company has entered into agreements containing indemnification provisions, which can be generally described as follows: (i) in connection with acquisitions of operating units or assets made by Euronet, the Company has agreed to indemnify the seller against third party claims made against the seller relating to the operating unit or asset and arising after the closing of the transaction, and (ii) in connection with dispositions made by Euronet, Euronet has agreed to indemnify the buyer against damages incurred by the buyer due to the buyer’s reliance on representations and warranties relating to the subject subsidiary, operating unit or business assets in the disposition agreement if such representations or warranties were untrue when made; and • Euronet has entered into agreements with certain third parties, including banks that provide fiduciary and other services to Euronet or to the Company’s benefit plans. Under such agreements, the Company has agreed to indemnify such service providers for third-party claims relating to carrying out their respective duties under such agreements. The Company is also required to meet minimum capitalization and cash requirements of various regulatory authorities in the jurisdictions in which the Company has money transfer operations. The Company has obtained surety bonds in compliance with money transfer licensing requirements of the applicable governmental authorities. To date, the Company is not aware of any significant claims made by the indemnified parties or third parties to guarantee agreements with the Company and, accordingly, no liabilities were recorded as of December 31, 2018 or 2017 .

Related Party Transactions (Not

Related Party Transactions (Note)	12 Months Ended
	Dec. 31, 2018
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	Related Party Transactions The Company leases an airplane from a company partially owned by Mr. Michael J. Brown, Euronet's Chief Executive Officer, President and Chairman of the Board of Directors. The airplane is leased for business use on a per flight hour basis at competitive commercial rates with no minimum usage requirement. Euronet incurred expenses of $0.3 million , $0.4 million and $0.3 million during the years ended December 31, 2018 , 2017 and 2016 , respectively, for the use of this airplane. In June 2014, the Company signed an ATM operating agreement with Rontec Ltd., a U.K. company in which Gerald Ronson holds a majority of the shares. Mr. Ronson is the father-in-law of Paul Althasen, one of the Company's directors. This is a commercial agreement under which the Company leases ATM sites from Rontec Ltd. at rates which it considers to be competitive commercial rates. The Company paid $38 thousand , $49 thousand and $106 thousand under this agreement in each of 2018, 2017 and 2016, respectively.

Selected Quarterly Data (Unaudi

Selected Quarterly Data (Unaudited) (Note)	12 Months Ended
	Dec. 31, 2018
Selected Quarterly Data [Abstract]
Quarterly Financial Information [Text Block]	Selected Quarterly Data (Unaudited) (in thousands, except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter For the Year Ended December 31, 2018 Revenues $ 550,515 $ 622,224 $ 714,505 $ 649,385 Operating income $ 45,472 $ 90,369 $ 150,913 $ 71,160 Net income $ 26,344 $ 43,636 $ 102,257 $ 59,894 Net income attributable to Euronet Worldwide, Inc. $ 26,413 $ 43,724 $ 102,723 $ 59,991 Earnings per common share: Basic $ 0.51 $ 0.85 $ 2.01 $ 1.16 Diluted $ 0.49 $ 0.82 $ 1.89 $ 1.10 For the Year Ended December 31, 2017 Revenues $ 473,380 $ 536,563 $ 637,834 $ 604,645 Operating income $ 41,286 $ 66,691 $ 116,901 $ 41,119 Net income (loss) $ 28,069 $ 51,347 $ 100,353 $ (22,829 ) Net income (loss) attributable to Euronet Worldwide, Inc. $ 28,123 $ 51,365 $ 100,290 $ (22,933 ) Earnings (loss) per common share: Basic $ 0.54 $ 0.98 $ 1.91 $ (0.44 ) Diluted $ 0.51 $ 0.93 $ 1.80 $ (0.44 )

Significant Accounting Policies

Significant Accounting Policies and Practices (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign currencies Assets and liabilities denominated in currencies other than the functional currency of a subsidiary are remeasured at rates of exchange on the balance sheet date. Resulting gains and losses on foreign currency transactions are included in the Consolidated Statements of Income. The financial statements of foreign subsidiaries where the functional currency is not the U.S. dollar are translated to U.S. dollars using (i) exchange rates in effect at period end for assets and liabilities, and (ii) weighted average exchange rates during the period for revenues and expenses. Adjustments resulting from translation of such financial statements are reflected in accumulated other comprehensive income (loss) as a separate component of consolidated equity.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash equivalents The Company considers all highly liquid investments, with an original maturity of three months or less, and certificates of deposit, which may be withdrawn at any time at the discretion of the Company without penalty, to be cash equivalents.
Inventory, Policy [Policy Text Block]
Property, Plant and Equipment, Policy [Policy Text Block]	Property and equipment Property and equipment are stated at cost, less accumulated depreciation. Property and equipment acquired in acquisitions have been recorded at estimated fair values as of the acquisition date. Depreciation is generally calculated using the straight-line method over the estimated useful lives of the respective assets. Depreciation and amortization rates are generally as follows: ATMs or ATM upgrades 5 - 7 years Computers and software 3 - 5 years POS terminals 3 - 5 years Vehicles and office equipment 3 - 10 years Leasehold improvements Over the lesser of the lease term or estimated useful life
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and other intangible assets The Company accounts for goodwill and other intangible assets in accordance with Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 350, Intangibles - Goodwill and Other (“ASC 350”). ASC 350 requires that the Company test for impairment on an annual basis and whenever events or circumstances dictate. Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment. ASC 350 provides an entity the option to first assess qualitative factors to determine whether the existence of events or circumstances leads to a determination that it is more likely than not (more than 50%) that the estimated fair value of a reporting unit is less than its carrying amount. If an entity elects to perform a qualitative assessment and determines that an impairment is more likely than not, the entity is then required to perform the existing quantitative impairment test (described below), otherwise no further analysis is required. An entity also may elect not to perform the qualitative assessment and, instead, proceed directly to the quantitative impairment test. The Company has a policy for its annual review of goodwill to perform the qualitative assessment for all reporting units not subjected directly to the quantitative impairment test. Under the qualitative assessment, various events and circumstances (or factors) that would affect the estimated fair value of a reporting unit are identified (similar to impairment indicators). These factors are then classified by the type of impact they would have on the estimated fair value using positive, neutral, and adverse categories based on current business conditions. Furthermore, the Company considers the results of the most recent quantitative impairment test completed for a reporting unit and compares, among other factors, the weighted average cost of capital ("WACC") between the current and prior years for each reporting unit. Under the quantitative impairment test, the evaluation of impairment involves comparing the current fair value of each reporting unit to its carrying value, including goodwill. The Company uses weighted results from the discounted cash flow model ("DCF model") and guideline public company method ("Market Approach model") to estimate the current fair value of its reporting units when testing for impairment, as management believes forecasted cash flows and EBITDA are the best indicator of such fair value. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including sales volumes and gross margins, tax rates, capital spending, discount rates and working capital changes. Most of these assumptions vary significantly among the reporting units. Significant assumptions in the Market Approach model are projected EBITDA, selected market multiple, and the estimated control premium. If the carrying value of goodwill exceeds its fair value, an impairment loss equal to such excess would be recognized. The Company completed its annual goodwill impairment test in the fourth quarter of 2018. It determined, after performing a qualitative review of each reporting unit, that it is more likely than not that the fair value of each of our reporting units exceeds the respective carrying amounts. Accordingly, there was no indication of impairment, and the quantitative goodwill impairment test was not performed. Other Intangible Assets - In accordance with ASC 350, intangible assets with finite lives are amortized over their estimated useful lives. Unless otherwise noted, amortization is calculated using the straight-line method over the estimated useful lives of the assets as follows: Non-compete agreements 2 - 5 years Trademarks and trade names 2 - 20 years Software 3 - 10 years Customer relationships 6 - 20 years The Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If such events or changes in circumstances are present, a loss is recognized if the carrying value of the asset is in excess of the sum of the undiscounted cash flows expected to result from the use of the asset and its eventual disposition. An impairment loss is measured as the amount by which the carrying amount of the asset exceeds the fair value of the asset. During 2018, the Company recorded a non-cash impairment charge of $7.0 million related to certain trade names as a result of combining HiFX into xe in order to operate the businesses under one brand name, xe. During 2017, the Company recorded a non-cash impairment charge of $2.3 million related to certain customer relationships as a result of the closure of the Pure Commerce office in South Korea. No impairment of long-lived assets was recorded during 2016. See Note 8, Goodwill and Acquired Intangible Assets, Net, to the Consolidated Financial Statements for additional information regarding the impairment of goodwill and other intangible assets.
Other assets policy [Policy Text Block]	Other assets Other assets include investments in unconsolidated affiliates, capitalized software development costs and capitalized payments for new or renewed contracts, contract renewals and customer conversion costs. Euronet capitalizes initial payments for new or renewed contracts to the extent recoverable through future operations, contractual minimums and/or penalties in the case of early termination. The Company's accounting policy is to limit the amount of capitalized costs for a given contract to the lesser of the estimated ongoing net future cash flows related to the contract or the termination fees the Company would receive in the event of early termination of the contract by the customer. ASC Topic 340, Other Assets and Deferred Costs (“ASC 340”) requires the deferral of incremental costs to obtain customer contracts, known as contract assets, which are then amortized to expense as part of selling, general and administrative expense over the respective periods of expected benefit. The Company completed its review of such costs and concluded that a transition adjustment was not necessary related to contract assets. However, the Company has implemented processes and controls to record such costs on an ongoing basis and will disclose them if they become material. The Company accounts for investments in affiliates using the equity method of accounting when it has the ability to exercise significant influence over the affiliate, but does not have a controlling interest. Equity losses in affiliates are generally recognized until the Company's investment is zero. As of December 31, 2018 and 2017, the Company had no material investments in unconsolidated affiliates.
Debt, Policy [Policy Text Block]	Convertible notes The Company accounts for its convertible debt instruments that may be settled in cash upon conversion in accordance with ASC Topic 470, Debt (“ASC 470”), which requires the proceeds from the issuance of such convertible debt instruments to be allocated between debt and equity components so that debt is discounted to reflect the Company's nonconvertible debt borrowing rate. Further, the Company applies ASC 470-20-35-13, which requires the debt discount to be amortized over the period the convertible debt is expected to be outstanding as additional non-cash interest expense.
Consolidation, Policy [Policy Text Block]	Noncontrolling interests The Company accounts for noncontrolling interests in its consolidated financial statements according to ASC Topic 810, Consolidations (“ASC 810”), which requires noncontrolling interests to be reported as a component of equity.
Business Combinations Policy [Policy Text Block]	Business combinations The Company accounts for business combinations in accordance with ASC Topic 805, Business Combinations (“ASC 805”), which requires most identifiable assets, liabilities, noncontrolling interests and goodwill acquired in a business combination to be recorded at “full fair value” at the acquisition date. Transaction-related costs are expensed in the period incurred.
Income Tax, Policy [Policy Text Block]	Income taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. In accordance with ASC Topic 740, Income Taxes (“ASC 740”), the Company's policy is to record estimated interest and penalties related to the underpayment of income taxes as income tax expense in the Consolidated Statements of Income. See Note 13, Taxes, to the Consolidated Financial Statements for further discussion regarding these provisions.
Presentation of taxes collected and remitted to government authorities policy [Policy Text Block]	Presentation of taxes collected and remitted to governmental authorities The Company presents taxes collected and remitted to governmental authorities on a net basis in the accompanying Consolidated Statements of Income.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair value measurements The Company applies the provisions of ASC Topic 820, Fair Value Measurements and Disclosures (“ASC 820”), regarding fair value measurements for assets and liabilities. ASC 820 defines fair value, establishes a framework for measuring fair value and requires certain disclosures about fair value measurements. The provisions apply whenever other accounting pronouncements require or permit fair value measurements. See Note 17, Financial Instruments and Fair Value Measurements, to the Consolidated Financial Statements for the required fair value disclosures.
Derivatives, Methods of Accounting, Hedging Derivatives [Policy Text Block]	Accounting for derivative instruments and hedging activities The Company accounts for derivative instruments and hedging activities in accordance with ASC Topic 815, Derivatives and Hedging (“ASC 815”), which requires that all derivative instruments be recognized as either assets or liabilities on the balance sheet at fair value. Primarily in the Money Transfer Segment, the Company enters into foreign currency derivative contracts, mainly forward contracts, to offset foreign currency exposure related to money transfer settlement assets and liabilities in currencies other than the U.S. dollar, derivative contracts written to its customers arising from its cross-currency money transfer services and certain assets and liability positions denominated in currencies other than the U.S. dollar. These contracts are considered derivative instruments under the provisions of ASC 815; however, the Company does not designate such instruments as hedges for accounting purposes. Accordingly, changes in the value of these contracts are recognized immediately as a component of foreign currency exchange gain (loss), net in the Consolidated Statements of Income. Cash flows resulting from derivative instruments are included in operating activities in the Company's Consolidated Statements of Cash Flows. The Company enters into derivative instruments with highly credit-worthy financial institutions and does not use derivative instruments for trading or speculative purposes. See Note 11, Derivative Instruments and Hedging Activities, to the Consolidated Financial Statements for further discussion of derivative instruments.
Revenue Recognition, Policy [Policy Text Block]	Revenue recognition The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. Sales and usage-based taxes are excluded from revenues. A description of the major components of revenue by business segment is as follows: EFT Processing - Revenues in the EFT Processing Segment are primarily derived from transaction and management fees and foreign currency exchange margin from owned and outsourced ATM, POS and card processing networks and from the sale of EFT software solutions for electronic payment and transaction delivery systems, and fees or margin earned from value added services, including dynamic currency conversion and domestic and international surcharge. Transaction-based fees include charges for cash withdrawals, debit or credit card transactions, balance inquiries, transactions not completed because the relevant card issuer does not give authorization and prepaid mobile airtime recharges. Outsourcing services are generally billed on the basis of a fixed monthly fee per ATM, plus a transaction-based fee. Transaction-based fees are recognized at the time the transactions are processed and outsourcing management fees are recognized ratably over the contract period. These fees can be variable based on transaction volume tiered discounts; however, as all tiered discounts are calculated monthly, the actual discount is recorded on a monthly basis. Certain of the Company's non-cancelable customer contracts provide for the receipt of up-front fees from the customer and/or decreasing or increasing fee schedules over the agreement term for substantially the same level of services to be provided by the Company. The Company recognizes revenue under these contracts based on proportional performance of services over the term of the contract. This generally results in “straight-line” (i.e., consistent value per period) revenue recognition of the contracts' total cash flows, including any up-front payment received from the customer. epay - Revenue generated in the epay Segment is primarily derived from commissions or processing fees associated with distribution and/or processing of prepaid mobile airtime and non-mobile products. These fees and commissions are received from mobile operators, content vendors or distributors or from retailers. In accordance with ASC 606, commissions are recognized as revenue during the period in which the Company provides the service. The portion of the commission that is paid to retailers is generally recorded as a direct operating cost. However, in circumstances where the Company is not the primary obligor in the distribution of the electronic payment products, those commissions are recorded as a reduction of revenue. In selling certain products, the Company is the primary obligor in the arrangements; accordingly, the gross sales value of the products are recorded as revenue and the purchase cost as direct operating cost. Transactions are processed through a network of POS terminals and direct connections to the electronic payment systems of retailers. Transaction processing fees are recognized at the time the transactions are processed. Money Transfer - In accordance with ASC 606, revenues for money transfer and other services represent a transaction fee in addition to a margin earned from purchasing currency at wholesale exchange rates and selling the currency to customers at retail exchange rates. Revenues and the associated direct operating cost are recognized at the time the transaction is processed. The Company has origination and distribution agents in place, which each earn a fee for the respective service. These fees are reflected as direct operating costs.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Share-based compensation The Company follows the provisions of ASC Topic 718, Compensation - Stock Compensation (“ASC 718”), for equity classified awards, which requires the determination of the fair value of the share-based compensation at the grant date and subsequent recognition of the related expense over the period in which the share-based compensation is earned (“requisite service period”). The amount of future compensation expense related to awards of nonvested shares or nonvested share units (“restricted stock”) is based on the market price for Euronet Common Stock at the grant date. The grant date is the date at which all key terms and conditions of the grant have been determined and the Company becomes contingently obligated to transfer equity to the employee who renders the requisite service, generally the date at which grants are approved by the Company's Board of Directors or Compensation Committee thereof. Share-based compensation expense for awards with only service conditions is generally recognized as expense on a “straight-line” basis over the requisite service period. For awards that vest based on achieving periodic performance conditions, expense is recognized on a “graded attribution method.” The graded attribution method results in expense recognition on a straight-line basis over the requisite service period for each separately vesting portion of an award. The Company has elected to use the “with and without method” when calculating the income tax benefit associated with its share-based payment arrangements. See Note 15, Stock Plans, for further disclosure.
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	Recently issued accounting pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“Topic 606”), and subsequently modified the standard with several ASUs. The Company adopted the standard on January 1, 2018 using the modified retrospective method applied to those contracts which were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with historic accounting under Topic 605. The Company completed its review of customer contracts relative to the requirements of Topic 606 and concluded that revenues from certain customer contracts in the epay Segment should be recorded differently under the principal versus agent guidance of Topic 606. With respect to those contracts, the Company concluded that it earns a commission from content providers for distributing and processing their prepaid mobile airtime and other electronic payment products, but it is not the principal for the products themselves. As a result, the impact of the change in accounting principle was a reduction of $88.5 million in both revenues and direct operating expenses for the year ended December 31, 2018, with no impact on reported net income. Contract Balances The Company records deferred revenues when cash payments are received or due in advance of its performance. The increase in the deferred revenue balance for 2018 is primarily driven by $52.9 million of cash payments received in the current year for which we have not yet satisfied the performance obligations, that were offset by $45.6 million of revenues recognized that were included in the deferred revenue balance as of December 31, 2017. Disaggregation of Revenues The following table presents the Company's revenues disaggregated by segment and region. The Company believes disaggregation by segment and region best depicts how the nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factors. The disaggregation of revenues by segment and region is based on management's assessment of segment performance together with allocation of financial resources, both capital and operating support costs, on a segment and regional level. Both segments and regions benefit from synergies achieved through concentration of operations and are influenced by macro-economic, regulatory and political factors in the respective segment and region. The Company recognizes foreign exchange revenues from derivative instruments in its HiFX operations in accordance with ASC Topic 815 and not ASC Topic 606. These revenues are not significant to the Company's consolidated revenues and are included in the following tables. For the Year Ended December 31, 2018 (in thousands) EFT Processing epay Money Transfer Total Europe $ 608,993 $ 491,282 $ 328,592 $ 1,428,867 North America 32,306 165,930 569,005 767,241 Asia Pacific 112,294 71,242 127,057 310,593 Other 58 15,330 18,308 33,696 Eliminations — — (3,768 ) Total $ 753,651 $ 743,784 $ 1,042,962 $ 2,536,629 For the Year Ended December 31, 2017 (1) (in thousands) EFT Processing epay Money Transfer Total Europe $ 501,161 $ 561,232 $ 262,280 $ 1,324,673 North America 31,469 63,148 513,868 608,485 Asia Pacific 101,787 91,516 101,005 294,308 Other 142 18,102 9,705 27,949 Eliminations — — — (2,993 ) Total $ 634,559 $ 733,998 $ 886,858 $ 2,252,422 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. For the Year Ended December 31, 2016 (1) (in thousands) EFT epay Money Total Europe $ 343,932 $ 498,668 $ 236,000 $ 1,078,600 North America 28,070 81,983 470,220 580,273 Asia Pacific 92,252 95,524 89,787 277,563 Other — 17,811 5,912 23,723 Eliminations — — — (1,544 ) Total $ 464,254 $ 693,986 $ 801,919 $ 1,958,615 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. In March 2016, the FASB issued ASU 2016-04, Recognition of Breakage for Certain Prepaid Stored-Value Products. The new standard specifies that liabilities within its scope are considered to be financial liabilities, and amends the guidance in ASC 405-20, Extinguishments of Liabilities, by directing entities to derecognize prepaid stored-value product liabilities based on expected breakage in proportion to the pattern of rights expected to be exercised by the consumer. Derecognition for breakage is permitted only to the extent that it is probable that a significant reversal of recognized breakage will not subsequently occur. The new standard is consistent with the breakage guidance in Topic 606. The Company adopted this ASU as of January 1, 2018 along with Topic 606. The adoption of this standard did not have a significant impact on the Company's consolidated financial statements and related disclosures. In August 2016, the FASB issued an accounting standard classified under FASB ASC Topic 230, “Statement of Cash Flows” . This accounting standard provides guidance on eight specific cash flow issues. Subsequently, the FASB issued amendments to this accounting standard that required companies to include restricted cash and restricted cash equivalents with cash and cash equivalents when reconciling the statement of cash flows. The Company adopted these standards as of January 1, 2018. The adoption of these accounting standards resulted in a decrease of $5.0 million for 2017 and an increase of $23.3 million for 2016 in net cash provided by operating activities. As of December 31, 2018, the Company had $76.6 million of restricted cash consisting of restricted cash held in trust and/or cash held on behalf of others and cash collateral on bank credit arrangements. Cash held in trust and/or cash held on behalf of others is in connection with the administration of the customer collection and vendor remittance activities by certain subsidiaries within the Company’s epay and EFT Processing Segments. Amounts collected on behalf of certain mobile phone operators and/or merchants are deposited into a restricted cash account. The bank credit arrangements primarily represent cash collateral on deposit with commercial banks to cover guarantees. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which will update the existing guidance on accounting for leases and require new qualitative and quantitative disclosures about the Company’s leasing activities. Topic 842 was subsequently amended by ASU No. 2018-01, Land Easement Practical Expedient for Transition to Topic 842; ASU No. 2018-10, Codification Improvements to Topic 842, Leases; ASU No. 2018-11, Targeted Improvements; and ASU No. 2018-20, Narrow Scope Improvements for Lessors. The new standard requires lessees to account for all leases on the balance sheet, except for certain short-term leases that have a maximum possible lease term of 12 months. The accounting for lessors is largely unchanged from the previous accounting guidance, except for leverage lease accounting which is not permitted for leases entered into or modified after the effective date of the new standard. The new standard is effective for annual periods beginning after December 15, 2018 and interim periods within those annual periods, with early adoption permitted. A modified retrospective approach is required, applying the new standard to all leases existing at the date of initial application. An entity may choose to use either (1) its effective date or (2) the beginning of the earliest comparative period presented in the financial statements as its date of initial application. The Company will adopt the new standard on January 1, 2019 and use the effective date as the date of initial application. Consequently, financial information will not be updated and the disclosures required under the new standard will not be provided for dates and periods before January 1, 2019. The new standard provides a number of optional practical expedients in transition. The Company will elect the "package of practical expedients," which permits the Company not to reassess under the new standard our prior conclusions about lease identification, lease classification and initial direct costs. The Company will also elect to combine lease and non-lease components and to include short-term leases with an initial term of 12 months or less on the balance sheet. The Company estimates approximately $375 million would be recognized as total right-of-use assets and total lease liabilities on its consolidated balance sheet as of January 1, 2019. Other than as disclosed, the Company does not expect the new standard to have a material impact on its results of operations or its cash flows. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326) , which requires entities to measure all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. Topic 326 was subsequently amended by ASU 2018-19. This replaces the existing incurred loss model and is applicable to the measurement of credit losses on financial assets measured at amortized cost. The Company is continuing to assess the potential impacts of the standard.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies and Practices Recently Issued and Adopted Accounting Pronouncements (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Schedule of Revenues by Segment by Region [Table Text Block]	For the Year Ended December 31, 2018 (in thousands) EFT Processing epay Money Transfer Total Europe $ 608,993 $ 491,282 $ 328,592 $ 1,428,867 North America 32,306 165,930 569,005 767,241 Asia Pacific 112,294 71,242 127,057 310,593 Other 58 15,330 18,308 33,696 Eliminations — — (3,768 ) Total $ 753,651 $ 743,784 $ 1,042,962 $ 2,536,629 For the Year Ended December 31, 2017 (1) (in thousands) EFT Processing epay Money Transfer Total Europe $ 501,161 $ 561,232 $ 262,280 $ 1,324,673 North America 31,469 63,148 513,868 608,485 Asia Pacific 101,787 91,516 101,005 294,308 Other 142 18,102 9,705 27,949 Eliminations — — — (2,993 ) Total $ 634,559 $ 733,998 $ 886,858 $ 2,252,422 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method. For the Year Ended December 31, 2016 (1) (in thousands) EFT epay Money Total Europe $ 343,932 $ 498,668 $ 236,000 $ 1,078,600 North America 28,070 81,983 470,220 580,273 Asia Pacific 92,252 95,524 89,787 277,563 Other — 17,811 5,912 23,723 Eliminations — — — (1,544 ) Total $ 464,254 $ 693,986 $ 801,919 $ 1,958,615 (1) As noted above, prior period amounts have not been adjusted under the modified retrospective method.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Schedule of Weighted Average Number of Shares [Table Text Block]	The following table provides the computation of diluted weighted average number of common shares outstanding: Year Ended December 31, 2018 2017 2016 Computation of diluted weighted average shares outstanding: Basic weighted average shares outstanding 51,487,557 52,523,272 52,276,951 Incremental shares from assumed exercise of stock options and vesting of restricted stock 1,499,713 1,793,375 1,705,224 Incremental shares from assumed conversion of convertible debentures 1,640,477 799,680 18,904 Diluted weighted average shares outstanding 54,627,747 55,116,327 54,001,079

Acquisitions (Tables)

Acquisitions (Tables) - YourCash [Member]	12 Months Ended
	Dec. 31, 2017
Business Acquisition [Line Items]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]

Restricted Cash (Tables)

Restricted Cash (Tables)	12 Months Ended
	Dec. 31, 2018
Restricted Cash [Abstract]
Restrictions on Cash and Cash Equivalents [Table Text Block]	The restricted cash balances as of December 31, 2018 and 2017 were as follows: As of December 31, (in thousands) 2018 2017 Cash held in trust and/or cash held on behalf of others $ 67,163 $ 67,541 Collateral on bank credit arrangements and other 9,432 13,833 Total $ 76,595 $ 81,374

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2018
PROPERTY AND EQUIPMENT, NET [Abstract]
Property, Plant and Equipment [Table Text Block]	The components of property and equipment, net of accumulated depreciation and amortization as of December 31, 2018 and 2017 are as follows: As of December 31, (in thousands) 2018 2017 ATMs $ 378,009 $ 329,159 POS terminals 36,521 41,218 Vehicles and office equipment 66,117 68,231 Computers and software 183,150 168,567 Land and buildings 1,252 1,256 665,049 608,431 Less accumulated depreciation and amortization (373,180 ) (340,128 ) Total $ 291,869 $ 268,303

Goodwill and Acquired Intangi_2

Goodwill and Acquired Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Acquired Intangible Assets Net [Abstract]
Schedule of Finite-Lived Intangible Assets [Table Text Block]	The following table summarizes intangible assets as of December 31, 2018 and 2017 : As of December 31, 2018 As of December 31, 2017 (in thousands) Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Customer relationships $ 199,581 $ (133,863 ) $ 207,133 $ (124,967 ) Trademarks and trade names 45,233 (25,837 ) 56,273 (25,768 ) Software 58,515 (29,420 ) 62,384 (25,142 ) Non-compete agreements 2,076 (1,800 ) 3,895 (3,265 ) Total $ 305,405 $ (190,920 ) $ 329,685 $ (179,142 )
Schedule of Intangible Assets and Goodwill [Table Text Block]	The following table summarizes the goodwill and amortizable intangible assets activity for the years ended December 31, 2018 and 2017 : (in thousands) Acquired Intangible Assets Goodwill Total Intangible Assets Balance as of January 1, 2017 $ 165,331 $ 689,713 $ 855,044 Increases (decreases): Impairment (2,286 ) (31,770 ) (34,056 ) Amortization (24,527 ) — (24,527 ) Other (primarily changes in foreign currency exchange rates) 12,025 59,443 71,468 Balance as of December 31, 2017 150,543 717,386 867,929 Increases (decreases): Acquisitions — 20,742 20,742 Impairment (7,049 ) — (7,049 ) Amortization (22,562 ) — (22,562 ) Other (primarily changes in foreign currency exchange rates) (6,447 ) (33,931 ) (40,378 ) Balance as of December 31, 2018 $ 114,485 $ 704,197 $ 818,682

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities [Table Text Block]	The balances as of December 31, 2018 and 2017 were as follows: As of December 31, (in thousands) 2018 2017 Money transfer settlement obligations $ 310,710 $ 343,613 Accrued expenses 293,864 301,390 Accrued amounts due to mobile operators and other content providers 65,878 92,291 Derivative liabilities 36,102 22,495 Total $ 706,554 $ 759,789

Debt Obligations (Tables)

Debt Obligations (Tables)	12 Months Ended
	Dec. 31, 2018
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments [Table Text Block]	Debt obligations consist of the following as of December 31, 2018 and 2017 : As of December 31, (in thousands) 2018 2017 Credit Facility: Revolving credit agreements $ 215,725 $ 3,000 Term loan, due 2019 — 51,094 215,725 54,094 Convertible Debt: 1.50% convertible notes, unsecured, due 2044 379,859 369,259 Other obligations 38,513 27,763 Total debt obligations $ 634,097 $ 451,116 Unamortized debt issuance costs (6,298 ) (5,816 ) Carrying value of debt $ 627,799 $ 445,300 Short-term debt obligations and current maturities of long-term debt obligations (38,017 ) (41,288 ) Long-term debt obligations $ 589,782 $ 404,012

Derivative Instruments and He_2

Derivative Instruments and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2018
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The following table summarizes the fair value of the derivative instruments as recorded in the Consolidated Balance Sheets as of the dates below: Asset Derivatives Liability Derivatives Fair Value Fair Value (in thousands) Balance Sheet Location December 31, 2018 December 31, 2017 Balance Sheet Location December 31, 2018 December 31, 2017 Derivatives not designated as hedging instruments Foreign currency exchange contracts Other current assets $ 44,637 $ 36,574 Other current liabilities $ (36,102 ) $ (22,495 )
Offsetting Assets and Liabilities [Table Text Block]	The following tables summarize the gross and net fair value of derivative assets and liabilities as of December 31, 2018 and 2017 (in thousands): Offsetting of Derivative Assets Gross Amounts Not Offset in the Consolidated Balance Sheet As of December 31, 2018 Gross Amounts of Recognized Assets Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts Presented in the Consolidated Balance Sheet Financial Instruments Cash Collateral Received Net Amounts Derivatives subject to a master netting arrangement or similar agreement $ 44,637 $ — $ 44,637 $ (25,187 ) $ (9,918 ) $ 9,532 As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ 36,574 $ — $ 36,574 $ (15,050 ) $ (7,603 ) $ 13,921 Offsetting of Derivative Liabilities Gross Amounts Not Offset in the Consolidated Balance Sheet As of December 31, 2018 Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Consolidated Balance Sheet Net Amounts Presented in the Consolidated Balance Sheet Financial Instruments Cash Collateral Paid Net Amounts Derivatives subject to a master netting arrangement or similar agreement $ (36,102 ) $ — $ (36,102 ) $ 25,187 $ 2,048 $ (8,867 ) As of December 31, 2017 Derivatives subject to a master netting arrangement or similar agreement $ (22,495 ) $ — $ (22,495 ) $ 15,050 $ 2,716 $ (4,729 )
Derivative Instruments, Gain (Loss) [Table Text Block]	The following tables summarize the location and amount of gains on derivatives in the Consolidated Statements of Income for the years ended December 31, 2018 , 2017 and 2016 : Amount of Gain Recognized in Income on Derivative Contracts (a) Location of Gain (Loss) Recognized in Income on Derivative Contracts Year Ended December 31, (in thousands) 2018 2017 2016 Foreign currency exchange contracts - Ria Operations Foreign currency exchange gain, net $ 173 $ 175 $ 143 (a) The Company enters into derivative contracts such as foreign currency exchange forwards and cross-currency swaps as part of its HiFX operations. These derivative contracts are excluded from this table as they are part of the broader disclosure of foreign currency exchange revenues for this business discussed above.

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Schedule of Capital Leased Asssets [Table Text Block]	The gross amount of the assets and related accumulated amortization recorded within property and equipment and subject to capital leases as of December 31, 2018 and 2017 were as follows: As of December 31, (in thousands) 2018 2017 ATMs $ 28,370 $ 23,969 Other 2,248 2,268 Subtotal 30,618 26,237 Less accumulated amortization (11,731 ) (9,395 ) Total $ 18,887 $ 16,842
Future minimum lease payments for operating and capital leases [Table Text Block]	Future minimum lease payments under the capital leases and the non-cancelable operating leases (with initial lease terms in excess of one year) as of December 31, 2018 are: (in thousands) Capital Leases Operating Leases Year ending December 31, 2019 $ 6,150 $ 80,803 2020 4,583 65,590 2021 3,240 49,052 2022 944 37,823 2023 60 30,192 Thereafter — 48,191 Total minimum lease payments 14,977 $ 311,651 Less amounts representing interest (1,320 ) Present value of net minimum capital lease payments 13,657 Less current portion of obligations under capital leases (5,458 ) Obligations under capital leases, less current portion $ 8,199

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	The sources of income before income taxes for the years ended December 31, 2018 , 2017 and 2016 are presented as follows: Year Ended December 31, (in thousands) 2018 2017 2016 Income before taxes: United States $ 35,467 $ 55,117 $ 41,804 Foreign 259,449 201,218 191,089 Total income before income taxes $ 294,916 $ 256,335 $ 232,893
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The Company's income tax expense for the years ended December 31, 2018 , 2017 and 2016 consisted of the following: Year Ended December 31, (in thousands) 2018 2017 2016 Current tax expense (benefit): U.S. $ (8,711 ) $ 29,620 $ (2,886 ) Foreign 70,244 79,475 59,515 Total current 61,533 109,095 56,629 Deferred tax expense (benefit): U.S. 6,871 14,056 9,908 Foreign (5,619 ) (23,756 ) (7,742 ) Total deferred 1,252 (9,700 ) 2,166 Total tax expense $ 62,785 $ 99,395 $ 58,795
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The following is a reconciliation of the federal statutory income tax rates of 21% for the year ended December 31, 2018 and 35% for the years ended December 31, 2017 and 2016 to the effective income tax rate for the same years: Year Ended December 31, (dollar amounts in thousands) 2018 2017 2016 U.S. federal income tax expense at applicable statutory rate $ 61,932 $ 89,684 $ 81,513 Tax effect of: State income tax expense (benefit) at statutory rates 1,680 968 1,341 Non-deductible expenses 3,457 5,648 3,482 Share-based compensation (13,750 ) (4,845 ) (1 ) Other permanent differences (6,141 ) 8,458 (4,929 ) Difference between U.S. federal and foreign tax rates 9,843 (24,270 ) (18,432 ) Provision in excess of statutory rates 3,737 8,426 2,490 Change in federal and foreign valuation allowance 3,075 (30,224 ) (8,163 ) Impairment of goodwill and acquired intangibles assets 83 8,248 — GILTI, net of tax credits 14,111 — — U.S. Tax Reform - transition tax and rate change (12,262 ) 41,597 — Other (2,980 ) (4,295 ) 1,494 Total income tax expense $ 62,785 $ 99,395 $ 58,795 Effective tax rate 21.3 % 38.8 % 25.2 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The tax effect of temporary differences and carryforwards that give rise to deferred tax assets and liabilities from continuing operations are as follows: As of December 31, (in thousands) 2018 2017 Deferred tax assets: Tax loss carryforwards $ 32,564 $ 25,494 Share-based compensation 7,395 7,244 Accrued expenses 17,242 14,621 Property and equipment 16,377 14,984 Goodwill and intangible amortization 10,619 13,866 Intercompany notes 6,913 9,596 Accrued revenue 36,273 32,947 Other 11,876 9,631 Gross deferred tax assets 139,259 128,383 Valuation allowance (21,857 ) (20,257 ) Net deferred tax assets 117,402 108,126 Deferred tax liabilities: Intangible assets related to purchase accounting (22,877 ) (29,361 ) Goodwill and intangible amortization (16,115 ) (11,537 ) Accrued expenses (28,274 ) (33,728 ) Intercompany notes (14,034 ) (7,348 ) Accrued interest (32,372 ) (27,449 ) Capitalized research and development (8,299 ) (7,020 ) Property and equipment (8,408 ) (4,717 ) Accrued revenue (4,388 ) (5,027 ) Other (5,841 ) (3,227 ) Total deferred tax liabilities (140,608 ) (129,414 ) Net deferred tax liabilities $ (23,206 ) $ (21,288 )
Summary of Operating Loss Carryforwards [Table Text Block]	December 31, 2018 , the Company had foreign tax net operating loss carryforwards of $109.8 million , which will expire as follows: (in thousands) Gross Tax Effected Year ending December 31, 2019 $ 1,227 $ 296 2020 1,926 419 2021 5,931 1,361 2022 1,847 418 2023 3,049 699 Thereafter 58,772 14,555 Unlimited 37,069 8,486 Total $ 109,821 $ 26,234
Summary of Positions for which Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Table Text Block]	A reconciliation of the beginning and ending amount of unrecognized tax benefits for the years ended December 31, 2018 and 2017 is as follows: Year Ended December 31, (in thousands) 2018 2017 Beginning balance $ 28,537 $ 17,988 Additions based on tax positions related to the current year 4,787 8,364 Additions for tax positions of prior years 966 3,157 Reductions for tax positions of prior years (1,705 ) — Settlements (807 ) (321 ) Statute of limitations expiration (863 ) (651 ) Ending balance $ 30,915 $ 28,537
Summary of Income Tax Examinations [Table Text Block]	Jurisdictions Periods U.S. (Federal) 2014 through 2018 Spain 2009 through 2018 Australia 2011 through 2018 U.K. 2009 through 2018 Germany 2013 through 2018

Valuation and Qualifying Acco_2

Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Dec. 31, 2018
Valuation and Qualifying Accounts Disclosure [Line Items]
Schedule of Valuation and Qualifying Accounts Disclosure [Table Text Block]	The following table provides a summary of the allowance for doubtful accounts balances and activity for the years ended December 31, 2018 , 2017 and 2016 : Year Ended December 31, (in thousands) 2018 2017 2016 Beginning balance-allowance for doubtful accounts $ 20,958 $ 18,369 $ 19,140 Additions-charged to expense 8,653 6,631 6,556 Amounts written off (4,079 ) (5,944 ) (6,839 ) Other (primarily changes in foreign currency exchange rates) (1,245 ) 1,902 (488 ) Ending balance-allowance for doubtful accounts $ 24,287 $ 20,958 $ 18,369

Stock Plans (Tables)

Stock Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Summary stock options activity is presented in the table below: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (years) Aggregate Intrinsic Value (thousands) Balance at December 31, 2017 (2,206,415 shares exercisable) 3,231,493 $ 42.42 Granted 264,982 $ 111.45 Exercised (892,344 ) $ 19.35 Forfeited/Canceled (41,561 ) $ 72.88 Balance at December 31, 2018 2,562,570 $ 57.10 5.9 $ 118,448 Exercisable at December 31, 2018 1,637,801 $ 39.64 4.5 $ 102,752 Vested and expected to vest at December 31, 2018 2,203,542 $ 49.53 5.4 $ 116,461
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	The following table provides the fair value of options granted under the SCP during 2018 , 2017 and 2016 , together with a description of the assumptions used to calculate the fair value using the Black-Scholes-Merton option-pricing model: Year ended December 31, 2018 2017 2016 Volatility 29.8 % 28.8 % 33.3 % Risk-free interest rate - weighted average 2.8 % 2.2 % 2.0 % Risk-free interest rate - range (a) (a) 1.29% to 2.01% Dividend yield — % — % — % Assumed forfeitures 8.0 % 8.0 % 8.0 % Expected lives 5.6 years 5.5 years 5.5 years Weighted-average fair value (per share) $ 37.16 $ 28.59 $ 25.29
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]	Summary restricted stock activity is presented in the table below: Number of Shares Weighted Average Grant Date Fair Value Per Share Nonvested at December 31, 2017 432,336 $ 72.09 Granted 103,304 $ 107.88 Vested (150,339 ) $ 62.83 Forfeited (13,460 ) $ 72.00 Nonvested at December 31, 2018 371,841 $ 85.78
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	The following table provides the weighted-average fair value of the ESPP stock purchase rights during the years ended December 31, 2018 , 2017 and 2016 and the assumptions used to calculate the fair value using the Black-Scholes-Merton option-pricing model: Year Ended December 31, 2018 2017 2016 Volatility - weighted average 30.1 % 18.4 % 36.3 % Volatility - range 23.5% to 36.7% 14.6% to 27.2% 20.0% to 50.1% Risk-free interest rate - weighted average 2.01 % 0.89 % 0.24 % Risk-free interest rate - range 1.73% to 2.45% 0.51% to 1.39% 0.22% to 0.29% Dividend yield — % — % — % Expected lives 3 months 3 months 3 months Weighted-average fair value (per share) $ 17.22 $ 15.81 $ 14.42

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Information [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	The following tables present the Company’s reportable segment results for the years ended December 31, 2018 , 2017 and 2016 : For the Year Ended December 31, 2018 (in thousands) EFT Processing epay Money Transfer Corporate Services, Eliminations and Other Consolidated Total revenues $ 753,651 $ 743,784 $ 1,042,962 $ (3,768 ) $ 2,536,629 Operating expenses: Direct operating costs 366,977 564,252 560,930 (3,753 ) 1,488,406 Salaries and benefits 75,791 57,748 194,808 32,085 360,432 Selling, general and administrative 46,925 35,749 125,647 8,486 216,807 Acquired intangible assets impairment — — 7,049 — 7,049 Depreciation and amortization 66,713 7,038 32,002 268 106,021 Total operating expenses 556,406 664,787 920,436 37,086 2,178,715 Operating income (expense) $ 197,245 $ 78,997 $ 122,526 $ (40,854 ) $ 357,914 Other income (expense) Interest income 1,320 Interest expense (37,573 ) Loss from unconsolidated affiliates (117 ) Foreign currency exchange loss, net (26,655 ) Other gains, net 27 Total other expense, net (62,998 ) Income before income taxes $ 294,916 Segment assets as of December 31, 2018 $ 1,220,141 $ 780,220 $ 1,310,775 $ 10,019 $ 3,321,155 Property and equipment, net as of December 31, 2018 $ 215,106 $ 31,172 $ 45,517 $ 74 $ 291,869 For the Year Ended December 31, 2017 (in thousands) EFT Processing epay Money Transfer Corporate Services, Eliminations and Other Consolidated Total revenues $ 634,559 $ 733,998 $ 886,858 $ (2,993 ) $ 2,252,422 Operating expenses: Direct operating costs 318,875 564,032 476,322 (2,979 ) 1,356,250 Salaries and benefits 61,683 54,459 168,371 26,274 310,787 Selling, general and administrative 33,158 36,014 108,022 13,108 190,302 Goodwill and acquired intangible assets impairment 2,286 31,770 — — 34,056 Depreciation and amortization 55,660 9,622 29,598 150 95,030 Total operating expenses 471,662 695,897 782,313 36,553 1,986,425 Operating income (expense) $ 162,897 $ 38,101 $ 104,545 $ (39,546 ) $ 265,997 Other income (expense) Interest income 2,443 Interest expense (32,571 ) Income from unconsolidated affiliates 48 Foreign currency exchange gain, net 20,300 Other gains, net 118 Total other expense, net (9,662 ) Income before income taxes $ 256,335 Segment assets as of December 31, 2017 $ 1,040,135 $ 695,990 $ 1,255,765 $ 148,139 $ 3,140,029 Property and equipment, net as of December 31, 2017 $ 196,451 $ 28,135 $ 43,564 $ 153 $ 268,303 For the Year Ended December 31, 2016 (in thousands) EFT Processing epay Money Transfer Corporate Services, Eliminations and Other Consolidated Total revenues $ 464,254 $ 693,986 $ 801,919 $ (1,544 ) $ 1,958,615 Operating expenses: Direct operating costs 224,793 528,774 422,508 (1,530 ) 1,174,545 Salaries and benefits 51,822 51,378 155,471 29,749 288,420 Selling, general and administrative 30,399 34,517 93,219 7,213 165,348 Depreciation and amortization 40,084 11,075 29,195 175 80,529 Total operating expenses 347,098 625,744 700,393 35,607 1,708,842 Operating income (expense) $ 117,156 $ 68,242 $ 101,526 $ (37,151 ) $ 249,773 Other income (expense) Interest income 1,696 Interest expense (28,332 ) Foreign currency exchange loss, net (10,200 ) Other gains, net 19,956 Total other expense, net (16,880 ) Income before income taxes $ 232,893 Segment assets as of December 31, 2016 $ 786,166 $ 733,514 $ 1,136,722 $ 56,470 $ 2,712,872 Property and equipment, net as of December 31, 2016 $ 139,161 $ 23,939 $ 38,954 $ 91 $ 202,145
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Total revenues for the years ended December 31, 2018 , 2017 and 2016 , and property and equipment and total assets as of December 31, 2018 and 2017 , summarized by geographic location, were as follows: Revenues Property and Equipment, net Total Assets For the year ended December 31, as of December 31, as of December 31, (in thousands) 2018 2017 2016 2018 2017 2018 2017 United States $ 721,977 $ 572,383 $ 548,877 $ 29,499 $ 28,465 $ 493,428 $ 592,187 Germany 476,122 495,778 409,590 25,302 20,668 508,062 435,687 Spain 155,619 115,473 82,921 39,238 29,881 198,082 152,841 United Kingdom 133,132 136,977 131,826 20,525 20,104 519,918 532,421 Poland 126,513 128,672 115,269 50,359 61,636 155,821 176,766 Italy 103,691 89,276 72,591 15,238 12,078 157,314 123,218 India 92,468 82,389 75,243 19,554 13,090 89,923 82,513 Malaysia 76,380 56,287 53,787 2,802 3,161 103,043 124,522 France 75,466 56,027 43,247 1,037 1,104 76,687 65,366 Greece 71,007 71,197 44,361 11,267 10,012 58,419 62,552 Australia 58,039 77,777 77,198 2,051 2,704 61,215 76,370 New Zealand 48,881 47,091 40,890 2,718 2,574 196,869 185,459 Other 397,334 323,095 262,815 72,279 62,826 702,374 530,127 Total foreign 1,814,652 1,680,039 1,409,738 262,370 239,838 2,827,727 2,547,842 Total $ 2,536,629 $ 2,252,422 $ 1,958,615 $ 291,869 $ 268,303 $ 3,321,155 $ 3,140,029

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Measurements [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	The following table details financial assets measured and recorded at fair value on a recurring basis: As of December 31, 2018 (in thousands) Balance Sheet Classification Level 1 Level 2 Level 3 Total Assets Foreign currency exchange contracts Other current assets $ — $ 44,637 $ — $ 44,637 Liabilities Foreign currency exchange contracts Other current liabilities $ — (36,102 ) $ — $ (36,102 ) As of December 31, 2017 (in thousands) Balance Sheet Classification Level 1 Level 2 Level 3 Total Assets Foreign currency exchange contracts Other current assets $ — $ 36,574 $ — $ 36,574 Liabilities Foreign currency exchange contracts Other current liabilities $ — $ (22,495 ) $ — $ (22,495 )

Selected Quarterly Data (Unau_2

Selected Quarterly Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Selected Quarterly Data [Abstract]
Summary Of Quarterly Financial Information [Table Text Block]	(in thousands, except per share data) First Quarter Second Quarter Third Quarter Fourth Quarter For the Year Ended December 31, 2018 Revenues $ 550,515 $ 622,224 $ 714,505 $ 649,385 Operating income $ 45,472 $ 90,369 $ 150,913 $ 71,160 Net income $ 26,344 $ 43,636 $ 102,257 $ 59,894 Net income attributable to Euronet Worldwide, Inc. $ 26,413 $ 43,724 $ 102,723 $ 59,991 Earnings per common share: Basic $ 0.51 $ 0.85 $ 2.01 $ 1.16 Diluted $ 0.49 $ 0.82 $ 1.89 $ 1.10 For the Year Ended December 31, 2017 Revenues $ 473,380 $ 536,563 $ 637,834 $ 604,645 Operating income $ 41,286 $ 66,691 $ 116,901 $ 41,119 Net income (loss) $ 28,069 $ 51,347 $ 100,353 $ (22,829 ) Net income (loss) attributable to Euronet Worldwide, Inc. $ 28,123 $ 51,365 $ 100,290 $ (22,933 ) Earnings (loss) per common share: Basic $ 0.54 $ 0.98 $ 1.91 $ (0.44 ) Diluted $ 0.51 $ 0.93 $ 1.80 $ (0.44 )

Summary of Significant Accoun_3

Summary of Significant Accounting Policies and Practices Property and equipment (Details)	12 Months Ended
	Dec. 31, 2018
Minimum [Member] | ATMs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Minimum [Member] | Computers and software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | POS Terminals [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] | Vehicles and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member] | ATMs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Maximum [Member] | Computers and software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | POS Terminals [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Maximum [Member] | Vehicles and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years

Summary of Significant Accoun_4

Summary of Significant Accounting Policies and Practices Intangible assets (Details)	12 Months Ended
	Dec. 31, 2018
Minimum [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	2 years
Minimum [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	2 years
Minimum [Member] | Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	3 years
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	6 years
Maximum [Member] | Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	5 years
Maximum [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	20 years
Maximum [Member] | Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	10 years
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	20 years

Summary of Significant Accoun_5

Summary of Significant Accounting Policies and Practices Goodwill and aquired intangible asset impairment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Restricted cash	$ 76,595	$ 81,374
Impairment of Intangible Assets, Finite-lived	$ 7,049	$ 2,286

Summary of Significant Accoun_6

Summary of Significant Accounting Policies and Practices Recently issued and adopted accounting pronouncements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities	$ 397,233	$ 286,276	$ 391,524
Goodwill, Impairment Loss	0	31,770
Impairment of Intangible Assets, Finite-lived	7,049	2,286
Deferred Tax Assets, Gross	139,259	128,383
Deferred Tax Assets, Valuation Allowance	21,857	20,257
Restricted cash	76,595	81,374
Deferred Revenue, Additions	52,900
Deferred Revenue, Revenue Recognized	45,600
Accounting Standards Update 2016-15 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net Cash Provided by (Used in) Operating Activities		(5,000)	23,300
Accounting Standards Update 2014-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	88,500
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset				$ 375,000
Eft Processing Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	753,651	634,559	464,254
Epay Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	743,784	733,998	693,986
Money Transfer Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	1,042,962	886,858	801,919
Europe [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	1,428,867	1,324,673	1,078,600
Europe [Member] | Eft Processing Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	608,993	501,161	343,932
Europe [Member] | Epay Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	491,282	561,232	498,668
Europe [Member] | Money Transfer Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	328,592	262,280	236,000
North America [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	767,241	608,485	580,273
North America [Member] | Eft Processing Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	32,306	31,469	28,070
North America [Member] | Epay Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	165,930	63,148	81,983
North America [Member] | Money Transfer Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	569,005	513,868	470,220
Asia Pacific [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	310,593	294,308	277,563
Asia Pacific [Member] | Eft Processing Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	112,294	101,787	92,252
Asia Pacific [Member] | Epay Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	71,242	91,516	95,524
Asia Pacific [Member] | Money Transfer Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	127,057	101,005	89,787
Other geographic locations [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	33,696	27,949	23,723
Other geographic locations [Member] | Eft Processing Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	58	142	0
Other geographic locations [Member] | Epay Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	15,330	18,102	17,811
Other geographic locations [Member] | Money Transfer Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	18,308	9,705	5,912
Consolidation, Eliminations [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	$ (3,768)	$ (2,993)	$ (1,544)

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Oct. 30, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Price				$ 72.18
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	$ (56,656)	$ 116,401	$ (45,175)

Stockholders' Equity Computatio

Stockholders' Equity Computation of diluted weighted average shares outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted average shares outstanding - basic	51,487,557	52,523,272	52,276,951
Weighted average number diluted shares outstanding adjustment	1,499,713	1,793,375	1,705,224
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	1,640,477	799,680	18,904
Weighted average shares outstanding - diluted	54,627,747	55,116,327	54,001,079
Antidilutive securities excluded from computation of earnings per share, amount	458,000	798,000	616,000

Stockholders' Equity Share Repu

Stockholders' Equity Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 27, 2018	Jan. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	1,640,477	799,680	18,904
Treasury Stock, Value, Acquired, Cost Method	$ 175,000		$ 75,569
2016 Share Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired			1,100,000
Treasury Stock, Value, Acquired, Cost Method			$ 75,600
Treasury Stock Acquired, Average Cost Per Share			$ 65.74
Stock Repurchase Program, Authorized Amount					$ 100,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased					5,000,000
Share Repurchase Plan [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method	$ 175,000
Stock Repurchase Program, Authorized Amount				$ 375,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased				10,000,000

Stockholders' Equity Preferred

Stockholders' Equity Preferred Stock (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Preferred Stock [Abstract]
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	1,640,477	799,680	18,904

Acquisitions (Details)

Acquisitions (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 704,197	$ 717,386	$ 689,713

Restricted Cash (Details)

Restricted Cash (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 76,595	$ 81,374
Cash held in trust or on behalf of others [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	67,163	67,541
Collateral on bank credit arrangements and other [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	$ 9,432	$ 13,833

Property and Equipment, Net (De

Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 665,049	$ 608,431
Property and equipment, accumulated depreciation	(373,180)	(340,128)
Property and Equipment, net	291,869	268,303	$ 202,145
Depreciation, Depletion and Amortization	75,100	63,400	$ 48,500
ATMs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	378,009	329,159
POS Terminals [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	36,521	41,218
Vehicles and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	66,117	68,231
Computers and software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	183,150	168,567
Land and buildings [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,252	$ 1,256

Goodwill and Acquired Intangi_3

Goodwill and Acquired Intangible Assets, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Customer Relationships, Gross	$ 199,581	$ 207,133
Finite lived trademarks and trade names	45,233	56,273
Finite-Lived Computer Software, Gross	58,515	62,384
Finite-Lived Noncompete Agreements, Gross	2,076	3,895
Finite-Lived Intangible Assets, Gross	305,405	329,685
Acquired intangible assets, accumulated amortization	(190,920)	(179,142)
Future Amortization Expense, Year One	20,500
Future Amortization Expense, Year Two	19,700
Future Amortization Expense, Year Three	18,800
Future Amortization Expense, Year Four	17,800
Future Amortization Expense, Year Five	13,100
Goodwill and Finite-lived Intangible Assets Rollforward [Roll Forward]
Finite-Lived Intangible Assets, Net	114,485	150,543	$ 165,331
Finite-lived intangible assets acquired during period	0
Finite-Lived Intangible Assets, Amortization Expense	(22,562)	(24,527)	(25,500)
Finite-lived intangible assets, other changes	(6,447)	12,025
Goodwill	704,197	717,386	689,713
Goodwill, Acquired During Period	20,742
Goodwill, Impairment Loss	0	(31,770)
Goodwill and Intangible Asset Impairment	(7,049)	(34,056)	0
Goodwill, Other Changes	(33,931)	59,443
Total intangible assets, net, including goodwill	818,682	867,929	$ 855,044
Total intangible assets acquired during period	20,742
Impairment of Intangible Assets, Finite-lived	(7,049)	(2,286)
Total intangible assets amortization expense	(22,562)	(24,527)
Total intangible assets, other changes	(40,378)	71,468
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, accumulated amortization	(133,863)	(124,967)
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, accumulated amortization	(25,837)	(25,768)
Computer Software, Intangible Asset [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, accumulated amortization	(29,420)	(25,142)
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, accumulated amortization	(1,800)	(3,265)
Money Transfer Segment [Member]
Goodwill and Finite-lived Intangible Assets Rollforward [Roll Forward]
Goodwill	467,600
Goodwill and Intangible Asset Impairment	(7,049)	0
Epay Segment [Member]
Goodwill and Finite-lived Intangible Assets Rollforward [Roll Forward]
Goodwill	130,900
Goodwill and Intangible Asset Impairment	0	(31,770)
Eft Processing Segment [Member]
Goodwill and Finite-lived Intangible Assets Rollforward [Roll Forward]
Goodwill	105,700
Goodwill and Intangible Asset Impairment	$ 0	$ (2,286)

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES [Abstract]
Accrued expenses, current	$ 293,864	$ 301,390
Accrued amounts due to mobile operators and other content providers	65,878	92,291
Money transfer settlement obligations	310,710	343,613
Derivative Liability, Current	36,102	22,495
Accrued expenses and other current liabilities	$ 706,554	$ 759,789

Debt Obligations (Details)

Debt Obligations (Details) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Oct. 16, 2018	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Oct. 17, 2018USD ($)	Oct. 30, 2014USD ($)$ / shares	Apr. 09, 2014USD ($)
Debt Instrument [Line Items]
Debt Instrument, Convertible, Carrying Amount of Equity Component								$ 66,100
Term Loan, Due 2019	$ 0	$ 0		$ 0	$ 51,094
Revolving Credit Agreements, due 2019	215,725	215,725		215,725	3,000
Line of Credit Facility, Fair Value of Amount Outstanding	215,725	215,725		215,725	54,094
Convertible Debt	379,859	379,859		379,859	369,259
Total Debt Obligations	634,097	634,097		634,097	451,116
Unamortized Debt Issuance Expense	(6,298)	(6,298)		(6,298)	(5,816)
Carrying value of debt	627,799	627,799		627,799	445,300
Long-term Debt, Current Maturities	(38,017)	(38,017)		(38,017)	(41,288)
Long-term Debt, Excluding Current Maturities	589,782	589,782		589,782	$ 404,012
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	500	500		500
Long-term Debt, Maturities, Repayments of Principal in Year Two	401,500	401,500		401,500
Long-term Debt, Maturities, Repayments of Principal in Year Five	215,725	215,725		215,725
Long-term Debt, Maturities, Repayments of Principal in Year Three	0	0		0
Long-term Debt, Maturities, Repayments of Principal in Year Four	$ 0	$ 0		$ 0
Line of Credit Facility, Maximum Borrowing Capacity							$ 1,000,000		$ 675,000
Long-term Debt, Weighted Average Interest Rate, at Point in Time					2.90%
Line of Credit Facility, Interest Rate at Period End	3.10%	3.10%		3.10%	2.80%
Debt Instrument, Interest Rate Terms			The base rate is the highest of (i) the Bank of America prime rate, (ii) the Federal Funds rate plus 0.50% or (iii) the Fixed LIBOR rate plus 1.00%.
Letter of credit, interest rate at period end	1.10%	1.10%		1.10%	1.40%
Letters of Credit Outstanding, Amount	$ 77,800	$ 77,800		$ 77,800
Debt Instrument, Convertible, Conversion Price | $ / shares								$ 72.18
Debt Conversion, Original Debt, Amount		1,000
Debt Instrument, Face Amount								$ 402,500
Other debt obligations	38,513	38,513		38,513	$ 27,763
Other debt, current	38,017	38,017		38,017
Long-term Debt, Maturities, Repayments of Principal after Year Five	0	0		0
1.5% Issue [Member]
Debt Instrument [Line Items]
Debt Issuance Costs, Gross								$ 10,700
Debt Instrument, Interest Rate, Stated Percentage								1.50%
Debt Instrument, Unamortized Discount	21,600	21,600		21,600	33,200
Amortization of Debt Discount (Premium)				$ 11,500	$ 11,000	$ 10,400
Debt Instrument, Convertible, Effective Interest Rate				4.70%	4.70%
Debt Instrument, Convertible, Interest Expense				$ 6,000	$ 6,000	$ 6,000
Term Loan [Member]
Debt Instrument [Line Items]
Term Loan, Due 2019									75,000
Line of Credit [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 47,100	$ 47,100		$ 47,100	$ 57,300
Line of credit - India [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity									10,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity									$ 590,000
Minimum [Member]
Debt Instrument [Line Items]
Consolidated Fixed Charge Coverage Ratio	4	4		4
Maximum [Member]
Debt Instrument [Line Items]
Consolidated Total Leverage Ratio	3.5	3.5		3.5
Letter of Credit [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 200,000	$ 200,000		$ 200,000
London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.125%		1.375%
London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.00%		2.375%
Base rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.175%		0.375%
Base rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%		1.375%
United States of America, Dollars | Swingline loans [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 50,000	50,000		50,000
Euro Member Countries, Euro | Swingline loans [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 90,000	$ 90,000		$ 90,000

Derivative Instruments and He_3

Derivative Instruments and Hedging Activities Derivative Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Liability, Fair Value, Gross Liability	$ (36,102)	$ (22,495)
Derivative Asset, Fair Value, Gross Asset	44,637	36,574
Derivative Asset, Fair Value, Gross Liability	0	0
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	44,637	36,574
Derivative Asset, Not Offset, Policy Election Deduction	(25,187)	(15,050)
Derivative, Collateral, Obligation to Return Cash	(9,918)	(7,603)
Derivative Asset, Fair Value, Amount Offset Against Collateral	9,532	13,921
Derivative Liability, Fair Value, Gross Asset	0	0
Derivative Liability, Fair Value, Amount Not Offset Against Collateral	(36,102)	(22,495)
Derivative Liability, Not Offset, Policy Election Deduction	25,187	15,050
Derivative, Collateral, Right to Reclaim Cash	2,048	2,716
Derivative Liability, Fair Value, Amount Offset Against Collateral	(8,867)	(4,729)
Ria Operations [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	251,100
Corporate Operations [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	64,300
HiFX Operations [Member] | Trading Revenue [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Trading Activity, Gain	69,200	$ 72,500	$ 66,000
HiFX Operations [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, Notional Amount	$ 1,800,000
Maximum [Member] | Ria Operations [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Foreign currency forward contract term	14 days

Derivative Instruments and He_4

Derivative Instruments and Hedging Activities Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	$ 44,637	$ 36,574
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	$ (36,102)	$ (22,495)

Derivative Instruments and He_5

Derivative Instruments and Hedging Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Ria Operations [Member] | Foreign Currency Gain (Loss) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	$ 173	$ 175	$ 143

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leased Assets [Line Items]
Capital Leased Assets, Gross	$ 30,618	$ 26,237
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	(11,731)	(9,395)
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net	18,887	16,842
Capital Lease Obligations Incurred	6,900	7,900	$ 5,800
Operating Leases, Rent Expense	132,800	105,000	$ 80,000
Capital Leases, Future Minimum Payments Due, Current	6,150
Capital Leases, Future Minimum Payments Due in Two Years	4,583
Capital Leases, Future Minimum Payments Due in Three Years	3,240
Capital Leases, Future Minimum Payments Due in Four Years	944
Capital Leases, Future Minimum Payments Due in Five Years	60
Capital Leases, Future Minimum Payments Due Thereafter	0
Capital Leases, Future Minimum Payments Due	14,977
Capital Leases, Future Minimum Payments, Interest Included in Payments	(1,320)
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments	13,657
Capital Lease Obligations, Current	(5,458)	(5,369)
Capital Lease Obligations, Noncurrent	8,199	9,753
Operating Leases, Future Minimum Payments Due, Current	80,803
Operating Leases, Future Minimum Payments, Due in Two Years	65,590
Operating Leases, Future Minimum Payments, Due in Three Years	49,052
Operating Leases, Future Minimum Payments, Due in Four Years	37,823
Operating Leases, Future Minimum Payments, Due in Five Years	30,192
Operating Leases, Future Minimum Payments, Due Thereafter	48,191
Operating Leases, Future Minimum Payments Due	311,651
ATMs [Member]
Leased Assets [Line Items]
Capital Leased Assets, Gross	28,370	23,969
Other leased assets [Member]
Leased Assets [Line Items]
Capital Leased Assets, Gross	$ 2,248	$ 2,268
Minimum [Member] | Capital Lease Obligations [Member]
Leased Assets [Line Items]
Lease Expiration Date	Dec. 31, 2019
Maximum [Member] | Capital Lease Obligations [Member]
Leased Assets [Line Items]
Lease Expiration Date	Dec. 31, 2023
Capital Lease Obligations [Member] | Minimum [Member]
Leased Assets [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.80%
Capital Lease Obligations [Member] | Maximum [Member]
Leased Assets [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	13.00%
Property Subject to Operating Lease [Member] | Minimum [Member]
Leased Assets [Line Items]
Lease Expiration Date	Dec. 31, 2019
Property Subject to Operating Lease [Member] | Maximum [Member]
Leased Assets [Line Items]
Lease Expiration Date	Dec. 31, 2033

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Income before income taxes	$ 294,916	$ 256,335	$ 232,893
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Income Tax Expense (Benefit)	61,533	109,095	56,629
Deferred Income Tax Expense (Benefit)	1,252	(9,700)	2,166
Income tax expense	$ 62,785	$ 99,395	$ 58,795
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	21.00%	35.00%	35.00%
Income Tax Expense, Income Tax Reconciliation [Abstract]
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	$ 61,932	$ 89,684	$ 81,513
Effective Income Tax Rate Reconciliation, State and Local Income Taxes	1,680	968	1,341
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other	3,457	5,648	3,482
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost	(13,750)	(4,845)	(1)
Effective Income tax reconciliation, other permanent differences	(6,141)	8,458	(4,929)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential	9,843	(24,270)	(18,432)
Effective Income Tax Reconciliation, Tax Contingencies, Foreign	3,737	8,426	2,490
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance	3,075	(30,224)	(8,163)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount	83	8,248	0
effective income tax rate reconciliation, global intangible low-taxed income	14,111
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		41,597
Effective Income Tax Rate Reconciliation, Other Adjustments	$ (2,980)	$ (4,295)	$ 1,494
Effective Income Tax Rate, Continuing Operations	21.30%	38.80%	25.20%
Components of Deferred Tax Assets and Liabilities [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 32,564	$ 25,494
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	7,395	7,244
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	17,242	14,621
Deferred tax assets, property, plant and equipment	16,377	14,984
Deferred tax assets, goodwill and intangible assets	10,619	13,866
Deferred tax assets, intercompany notes	6,913	9,596
Deferred tax assets, accrued revenue	36,273	32,947
Deferred Tax Assets, Other	11,876	9,631
Deferred Tax Assets, Gross	139,259	128,383
Deferred Tax Assets, Valuation Allowance	(21,857)	(20,257)
Deferred Tax Assets, Net	117,402	108,126
Deferred Tax Liabilities, Goodwill and Intangible Assets, Intangible Assets	(22,877)	(29,361)
Deferred Tax Liabilities, Goodwill and Intangible Assets, Goodwill	(16,115)	(11,537)
Deferred tax liabilities, accrued expenses	(28,274)	(33,728)
Deferred tax liabilities, intercompany notes	(14,034)	(7,348)
Deferred tax liabilities, accrued interest	(32,372)	(27,449)
Deferred Tax Liabilities, Deferred Expense, Capitalized Research and Development Costs	(8,299)	(7,020)
Deferred Tax Liabilities, Property, Plant and Equipment	(8,408)	(4,717)
Deferred tax liabilities, accrued revenue	(4,388)	(5,027)
Deferred Tax Liabilities, Other	(5,841)	(3,227)
Deferred Tax Liabilities, Gross	(140,608)	(129,414)
Deferred Tax Liabilities	(23,206)	(21,288)
Undistributed earnings of foreign subsidiaries indefinitely reinvested	1,477,500
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits Period Start	28,537	17,988
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	4,787	8,364
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	966	3,157
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(1,705)	0
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	(807)	(321)
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(863)	(651)
Unrecognized Tax Benefits Period End	30,915	28,537	$ 17,988
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	28,000	26,700
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	4,400	3,500
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earning, Provisional Income Tax Expense (Benefit)		28,100
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax (Expense) Benefit		13,500
Tax Cut and Jobs Act of 2017, Final Accounting, Adjustment to Income Tax Expense (Benefit)	(12,262)
UNITED STATES
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Income (Loss) before Income Taxes, United States	35,467	55,117	41,804
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Income Tax Expense (Benefit)	(8,711)	29,620	(2,886)
Deferred Income Tax Expense (Benefit)	6,871	14,056	9,908
Non-US [Member]
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Income before Income Taxes, Foreign	259,449	201,218	191,089
Foreign Tax Authority [Member]
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current Income Tax Expense (Benefit)	70,244	79,475	59,515
Deferred Income Tax Expense (Benefit)	(5,619)	(23,756)	$ (7,742)
US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	109,821	90,200
Operating Loss Carryforward, Tax Effected	26,234
State and Local Jurisdiction [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	91,800	$ 59,100
Expiring in One Year [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	1,227
Operating Loss Carryforward, Tax Effected	296
Expiring in Two Years [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	1,926
Operating Loss Carryforward, Tax Effected	419
Expiring in Three Years [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	5,931
Operating Loss Carryforward, Tax Effected	1,361
Expiring in Four Years [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	1,847
Operating Loss Carryforward, Tax Effected	418
Expiring in Five Years [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	3,049
Operating Loss Carryforward, Tax Effected	699
Expiring in More than Five Years [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	58,772
Operating Loss Carryforward, Tax Effected	14,555
Not Subject to Expiration [Member] | US Federal and Foreign [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Operating Loss Carryforwards	37,069
Operating Loss Carryforward, Tax Effected	$ 8,486

Valuation and Qualifying Acco_3

Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Movement in Valuation Allowances and Reserves [Roll Forward]
Allowance for doubtful accounts receivable, period start	$ 20,958	$ 18,369	$ 19,140
Additions-charged to expense	8,653	6,631	6,556
Amounts written off	(4,079)	(5,944)	(6,839)
Other (primarily changes in foreign currency exchange rates)	(1,245)	1,902	(488)
Allowance for doubtful accounts receivable, period end	$ 24,287	$ 20,958	$ 18,369

Stock Plans (Details)

Stock Plans (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3,100,000
Allocated Share-based Compensation Expense	$ 16,800	$ 15,600	$ 15,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 2,700	$ 2,300	1,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	2,562,570	3,231,493
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period [Line Items]	264,982
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(892,344)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	(41,561)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	1,637,801	2,206,415
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	2,203,542
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 57.10	$ 42.42
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	111.45
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	19.35
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	72.88
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	39.64
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 49.53
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	5 years 11 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	5 years 5 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	4 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 118,448
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	102,752
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	116,461
Proceeds from Stock Options Exercised	17,100	$ 9,500	4,100
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	$ 73,000	$ 23,200	$ 12,300
employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, total period for recognition	3 years 8 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Weighted Average Volatility Rate	30.10%	18.40%	36.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	29.80%	28.80%	33.30%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	3 months	3 months	3 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price	$ 37.16	$ 28.59	$ 25.29
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Share-based compensation arrangements by share-based payment award, per share, ESPP grant date fair value	$ 17.22	$ 15.81	$ 14.42
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 400	$ 400	$ 500
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateWeightedAverage	2.01%	0.89%	0.24%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Shares reserved for employee stock purchase plan	1,000,000
Stock Issued During Period, Shares, Employee Stock Purchase Plans	21,872	21,547	34,658
Employee Stock Ownership Plan (ESOP), Weighted Average Purchase Price of Shares Purchased	$ 71.08	$ 69.06	$ 59.69
Employee Stock [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	23.50%	14.60%	20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	1.73%	0.51%	0.22%
Employee Stock [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	36.70%	27.20%	50.10%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.45%	1.39%	0.29%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	371,841	432,336
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	103,304
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(150,339)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(13,460)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 85.78	$ 72.09
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	107.88	$ 91.28	$ 73.86
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	62.83
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value	$ 72
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$ 14,200	$ 13,100	$ 13,300
Performance-based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 9,800
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 10 months
Time-based restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 10,900
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	3 years 7 months
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 21,600
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateWeightedAverage	2.80%	2.20%	2.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%	0.00%
Share-base compensation arrangement by share-based payment award, FV assumptions, forfeitures	8.00%	8.00%	8.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	5 years 7 months	5 years 6 months	5 years 6 months
Stock Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.80%	2.20%	1.29%
Stock Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.80%	2.20%	2.01%

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 649,385	$ 714,505	$ 622,224	$ 550,515	$ 604,645	$ 637,834	$ 536,563	$ 473,380	$ 2,536,629	$ 2,252,422	$ 1,958,615
Direct operating costs									1,488,406	1,356,250	1,174,545
Salaries and benefits									360,432	310,787	288,420
Selling, general and administrative									216,807	190,302	165,348
Goodwill and Intangible Asset Impairment									7,049	34,056	0
Depreciation and amortization									106,021	95,030	80,529
Total operating expenses									2,178,715	1,986,425	1,708,842
Operating income	71,160	$ 150,913	$ 90,369	$ 45,472	41,119	$ 116,901	$ 66,691	$ 41,286	357,914	265,997	249,773
Interest income									1,320	2,443	1,696
Interest expense									(37,573)	(32,571)	(28,332)
Income from unconsolidated affiliates									(117)	48	0
Foreign currency exchange (loss) gain, net									(26,655)	20,300	(10,200)
Other gains									27	118	19,956
Other expense, net									(62,998)	(9,662)	(16,880)
Income before income taxes									294,916	256,335	232,893
Property and Equipment, net	291,869				268,303				291,869	268,303	202,145
Total Assets	3,321,155				3,140,029				3,321,155	3,140,029	2,712,872
Eft Processing Segment [Member]
Segment Reporting Information [Line Items]
Revenues									753,651	634,559	464,254
Direct operating costs									366,977	318,875	224,793
Salaries and benefits									75,791	61,683	51,822
Selling, general and administrative									46,925	33,158	30,399
Goodwill and Intangible Asset Impairment									0	2,286
Depreciation and amortization									66,713	55,660	40,084
Total operating expenses									556,406	471,662	347,098
Operating income									197,245	162,897	117,156
Property and Equipment, net	215,106				196,451				215,106	196,451	139,161
Total Assets	1,220,141				1,040,135				1,220,141	1,040,135	786,166
Epay Segment [Member]
Segment Reporting Information [Line Items]
Revenues									743,784	733,998	693,986
Direct operating costs									564,252	564,032	528,774
Salaries and benefits									57,748	54,459	51,378
Selling, general and administrative									35,749	36,014	34,517
Goodwill and Intangible Asset Impairment									0	31,770
Depreciation and amortization									7,038	9,622	11,075
Total operating expenses									664,787	695,897	625,744
Operating income									78,997	38,101	68,242
Property and Equipment, net	31,172				28,135				31,172	28,135	23,939
Total Assets	780,220				695,990				780,220	695,990	733,514
Money Transfer Segment [Member]
Segment Reporting Information [Line Items]
Revenues									1,042,962	886,858	801,919
Direct operating costs									560,930	476,322	422,508
Salaries and benefits									194,808	168,371	155,471
Selling, general and administrative									125,647	108,022	93,219
Goodwill and Intangible Asset Impairment									7,049	0
Depreciation and amortization									32,002	29,598	29,195
Total operating expenses									920,436	782,313	700,393
Operating income									122,526	104,545	101,526
Property and Equipment, net	45,517				43,564				45,517	43,564	38,954
Total Assets	1,310,775				1,255,765				1,310,775	1,255,765	1,136,722
Unallocated Amount to Segment, Intersegment Eliminations and Other [Member]
Segment Reporting Information [Line Items]
Revenues									(3,768)	(2,993)	(1,544)
Direct operating costs									(3,753)	(2,979)	(1,530)
Salaries and benefits									32,085	26,274	29,749
Selling, general and administrative									8,486	13,108	7,213
Goodwill and Intangible Asset Impairment									0	0
Depreciation and amortization									268	150	175
Total operating expenses									37,086	36,553	35,607
Operating income									(40,854)	(39,546)	(37,151)
Property and Equipment, net	74				153				74	153	91
Total Assets	10,019				148,139				10,019	148,139	56,470
UNITED STATES
Segment Reporting Information [Line Items]
Revenues									721,977	572,383	548,877
Property and Equipment, net	29,499				28,465				29,499	28,465
Total Assets	493,428				592,187				493,428	592,187
Non-US [Member]
Segment Reporting Information [Line Items]
Revenues									1,814,652	1,680,039	1,409,738
Property and Equipment, net	262,370				239,838				262,370	239,838
Total Assets	2,827,727				2,547,842				2,827,727	2,547,842
AUSTRALIA
Segment Reporting Information [Line Items]
Revenues									58,039	77,777	77,198
Property and Equipment, net	2,051				2,704				2,051	2,704
Total Assets	61,215				76,370				61,215	76,370
GREECE
Segment Reporting Information [Line Items]
Revenues									71,007	71,197	44,361
Property and Equipment, net	11,267				10,012				11,267	10,012
Total Assets	58,419				62,552				58,419	62,552
UNITED KINGDOM
Segment Reporting Information [Line Items]
Revenues									133,132	136,977	131,826
Property and Equipment, net	20,525				20,104				20,525	20,104
Total Assets	519,918				532,421				519,918	532,421
GERMANY
Segment Reporting Information [Line Items]
Revenues									476,122	495,778	409,590
Property and Equipment, net	25,302				20,668				25,302	20,668
Total Assets	508,062				435,687				508,062	435,687
POLAND
Segment Reporting Information [Line Items]
Revenues									126,513	128,672	115,269
Property and Equipment, net	50,359				61,636				50,359	61,636
Total Assets	155,821				176,766				155,821	176,766
SPAIN
Segment Reporting Information [Line Items]
Revenues									155,619	115,473	82,921
Property and Equipment, net	39,238				29,881				39,238	29,881
Total Assets	198,082				152,841				198,082	152,841
NEW ZEALAND
Segment Reporting Information [Line Items]
Revenues									48,881	47,091	40,890
Property and Equipment, net	2,718				2,574				2,718	2,574
Total Assets	196,869				185,459				196,869	185,459
ITALY
Segment Reporting Information [Line Items]
Revenues									103,691	89,276	72,591
Property and Equipment, net	15,238				12,078				15,238	12,078
Total Assets	157,314				123,218				157,314	123,218
MALAYSIA
Segment Reporting Information [Line Items]
Revenues									76,380	56,287	53,787
Property and Equipment, net	2,802				3,161				2,802	3,161
Total Assets	103,043				124,522				103,043	124,522
FRANCE
Segment Reporting Information [Line Items]
Revenues									75,466	56,027	43,247
Property and Equipment, net	1,037				1,104				1,037	1,104
Total Assets	76,687				65,366				76,687	65,366
INDIA
Segment Reporting Information [Line Items]
Revenues									92,468	82,389	75,243
Property and Equipment, net	19,554				13,090				19,554	13,090
Total Assets	89,923				82,513				89,923	82,513
Other geographic locations [Member]
Segment Reporting Information [Line Items]
Revenues									397,334	323,095	$ 262,815
Property and Equipment, net	72,279				62,826				72,279	62,826
Total Assets	$ 702,374				$ 530,127				$ 702,374	$ 530,127

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Convertible Debt	$ 379,859,000	$ 369,259,000
Convertible Debt, Fair Value Disclosures	571,600,000	503,700,000
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	44,637,000	36,574,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	(36,102,000)	(22,495,000)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0	0
Foreign Currency Contracts, Liability, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	44,637,000	36,574,000
Foreign Currency Contracts, Liability, Fair Value Disclosure	(36,102,000)	(22,495,000)
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign Currency Contract, Asset, Fair Value Disclosure	0	0
Foreign Currency Contracts, Liability, Fair Value Disclosure	$ 0	$ 0

Commitments (Details)

Commitments (Details) $ in Millions	Dec. 31, 2018USD ($)
Guarantor Obligations [Line Items]
Letters of Credit Outstanding, Amount	$ 77.8
Guarantee Type, Various ATM Cash [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	22.9
Performance Guarantee [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	61.7
Indemnification Agreement [Member]
Guarantor Obligations [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	523.3
Cash and Cash Equivalents [Member]
Guarantor Obligations [Line Items]
Pledged Assets, Not Separately Reported, Other	$ 3.9

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 300	$ 400	$ 300
Rontec Ltd. [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses from transactions with related party	$ 38	$ 49	$ 106

Selected Quarterly Data (Unau_3

Selected Quarterly Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Selected Quarterly Data [Abstract]
Revenues (quarterly)	$ 649,385	$ 714,505	$ 622,224	$ 550,515	$ 604,645	$ 637,834	$ 536,563	$ 473,380	$ 2,536,629	$ 2,252,422	$ 1,958,615
Operating income (loss) (quarterly)	71,160	150,913	90,369	45,472	41,119	116,901	66,691	41,286	357,914	265,997	249,773
Net income (loss)	59,894	102,257	43,636	26,344	(22,829)	100,353	51,347	28,069	232,131	156,940	174,098
Net income attributable to Euronet Worldwide, Inc. (quarterly)	$ 59,991	$ 102,723	$ 43,724	$ 26,413	$ (22,933)	$ 100,290	$ 51,365	$ 28,123	$ 232,851	$ 156,845	$ 174,415
Earnings (loss) per share, basic (quarterly)	$ 1.16	$ 2.01	$ 0.85	$ 0.51	$ (0.44)	$ 1.91	$ 0.98	$ 0.54	$ 4.52	$ 2.99	$ 3.34
Earnings (loss) per share, diluted (quarterly)	$ 1.10	$ 1.89	$ 0.82	$ 0.49	$ (0.44)	$ 1.80	$ 0.93	$ 0.51	$ 4.26	$ 2.85	$ 3.23