Topgolf Callaway Brands (MODG) 10-K 27 Feb 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Jan. 31, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Trading Symbol	ELY
Entity Registrant Name	CALLAWAY GOLF CO
Entity Central Index Key	837,465
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		94,631,544
Entity Public Float			$ 1,190,918,588

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 85,674,000	$ 125,975,000
Accounts receivable, net	94,725,000	127,863,000
Inventories	262,486,000	189,400,000
Income taxes receivable	542,000	637,000
Other current assets	22,557,000	16,550,000
Total current assets	465,984,000	460,425,000
Property, plant and equipment, net	70,227,000	54,475,000
Intangible assets, net	225,758,000	88,731,000
Goodwill	56,429,000	25,593,000
Deferred taxes, net	91,398,000	114,707,000
Investment in golf-related ventures (Note 7)	70,495,000	48,997,000
Other assets	10,866,000	8,354,000
Total assets	991,157,000	801,282,000
Current liabilities:
Accounts payable and accrued expenses	176,127,000	132,521,000
Accrued employee compensation and benefits	40,173,000	32,568,000
Asset-based credit facility	87,755,000	11,966,000
Accrued warranty expense	6,657,000	5,395,000
Equipment note, short-term	2,367,000	0
Income taxes payable	1,295,000	4,404,000
Total current liabilities	314,374,000	186,854,000
Long-term liabilities:
Income tax liability	4,602,000	3,608,000
Deferred taxes, net	1,822,000	1,596,000
Equipment note, long-term	9,448,000	0
Long-term other	1,536,000	624,000
Commitments & contingencies (Note 11)
Shareholders’ equity:
Preferred stock, $.01 par value, 3,000,000 shares authorized, 0 shares issued and outstanding at both December 31, 2017 and 2016	0	0
Common stock, $.01 par value, 240,000,000 shares authorized, 95,042,557 shares and 94,214,295 shares issued at December 31, 2017 and 2016, respectively	950,000	942,000
Additional paid-in capital	335,222,000	330,206,000
Retained earnings	324,081,000	287,129,000
Accumulated other comprehensive loss	(6,166,000)	(18,466,000)
Less: Common stock held in treasury, at cost, 411,013 shares and 97,837 shares at December 31, 2017 and 2016, respectively	(4,456,000)	(905,000)
Total Callaway Golf Company shareholders’ equity	649,631,000	598,906,000
Non-controlling interest in consolidated entity (Note 8)	9,744,000	9,694,000
Total shareholders’ equity	659,375,000	608,600,000
Total liabilities and shareholders’ equity	$ 991,157,000	$ 801,282,000

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	3,000,000	3,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	240,000,000	240,000,000
Common stock, shares issued (in shares)	95,042,557	94,214,295
Common stock held in treasury (in shares)	411,013	97,837

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net sales	$ 1,048,736	$ 871,192	$ 843,794
Cost of sales	568,288	486,181	486,161
Gross profit	480,448	385,011	357,633
Selling expenses	270,890	235,556	228,910
General and administrative expenses	94,153	71,969	68,567
Research and development expenses	36,568	33,318	33,213
Total operating expenses	401,611	340,843	330,690
Income from operations	78,837	44,168	26,943
Interest income	454	621	388
Interest expense	(4,365)	(2,368)	(8,733)
Gain on sale of investments in golf-related ventures	0	17,662	0
Other income (expense), net	(6,871)	(1,690)	1,465
Income before income taxes	68,055	58,393	20,063
Income tax provision (benefit)	26,388	(132,561)	5,495
Net income	41,667	190,954	14,568
Less: Net income attributable to non-controlling interests	861	1,054	0
Net income attributable to Callaway Golf Company	$ 40,806	$ 189,900	$ 14,568
Earnings per common share:
Basic (in dollars per share)	$ 0.43	$ 2.02	$ 0.18
Diluted (in dollars per share)	$ 0.42	$ 1.98	$ 0.17
Weighted-average common shares outstanding:
Basic (in shares)	94,329	94,045	83,116
Diluted (in shares)	96,577	95,845	84,611
Dividends paid per common share (in dollars per share)	$ 0.04	$ 0.04	$ 0.04

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 41,667	$ 190,954	$ 14,568
Other comprehensive income (loss):
Change in derivative instruments	(2,492)	1,976	525
Foreign currency translation adjustments	14,361	(8,831)	(11,542)
Comprehensive income, before income tax on other comprehensive income items	53,536	184,099	3,551
Income tax expense (benefit) on derivative instruments	594	(902)	0
Comprehensive income	54,130	183,197	3,551
Less: Comprehensive income (loss) attributable to non-controlling interests	163	(1,104)	0
Comprehensive income attributable to Callaway Golf Company	$ 53,967	$ 184,301	$ 3,551

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income	$ 41,667	$ 190,954	$ 14,568
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,605	16,586	17,379
Inventory step-up amortization from acquisitions	3,112	0	0
Deferred taxes	24,594	(141,447)	128
Share-based compensation	12,647	8,965	7,542
Loss (gain) on disposal of long-lived assets and deferred gain amortization	1,490	(116)	(1,006)
Gain on sale of investments in golf-related ventures	0	(17,662)	0
Unrealized losses (gains) on foreign currency forward contracts	1,023	(683)	0
Discount amortization on convertible notes	0	0	531
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable, net	51,618	(16,965)	(11,591)
Inventories	(52,010)	24,251	(5,347)
Other assets	(6,533)	168	7,060
Accounts payable and accrued expenses	15,414	12,553	5,382
Accrued employee compensation and benefits	7,021	(489)	(3,395)
Income taxes receivable and payable	(2,155)	2,493	(370)
Accrued warranty expense	1,262	(311)	99
Other liabilities	944	(587)	(399)
Net cash provided by operating activities	117,699	77,710	30,581
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired	(183,478)	0	0
Capital expenditures	(26,203)	(16,152)	(14,369)
Investment in golf-related ventures	(21,499)	(1,448)	(940)
Proceeds from sale of property, plant and equipment	587	20	2
Proceeds from sale of investments in golf-related ventures	0	23,429	0
Note receivable	0	3,104	(3,104)
Net cash (used in) provided by investing activities	(230,593)	8,953	(18,411)
Cash flows from financing activities:
Repayment of asset-based credit facilities, net	75,789	(3,003)	(266)
Proceeds from Long-term Debt	11,815	0	0
Exercise of stock options	5,362	2,637	6,565
Acquisition of treasury stock	(16,617)	(5,144)	(1,960)
Dividends paid, net	(3,773)	(3,764)	(3,391)
Credit facility amendment costs	(2,246)	0	0
Noncontrolling Interest, Distributions to Noncontrolling Interest Holders	(974)	0	0
Other financing activities	0	20	0
Net cash provided by (used in) financing activities	69,356	(9,254)	948
Effect of exchange rate changes on cash and cash equivalents	3,237	(1,235)	(952)
Net (decrease) increase in cash and cash equivalents	(40,301)	76,174	12,166
Cash and cash equivalents at beginning of year	125,975	49,801	37,635
Cash and cash equivalents at end of year	85,674	125,975	49,801
Supplemental disclosures:
Cash paid for interest and fees	4,594	1,626	6,641
Cash paid for income taxes, net	10,788,000	6,143	5,454
Noncash investing and financing activities:
Conversion of convertible notes to common stock, net of discount (Note 4)	2,007	736	2,255
Issuance of treasury stock and common stock for compensatory stock awards released from restriction	5,813	920	3,763
Conversion of convertible notes to common stock, net of discount (Note 3)	$ 0	$ 0	$ 109,105

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Callaway Golf Company	Non-controlling Interest
Beginning balance (in shares) at Dec. 31, 2014		78,374				(780)
Beginning balance at Dec. 31, 2014	$ 291,534,000	$ 784,000	$ 210,057,000	$ 89,932,000	$ (796,000)	$ (8,443,000)	$ 291,534,000	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Convertible notes to common stock exchange (in shares)		15,000
Convertible notes to common stock exchange	109,105,000	$ 150,000	108,955,000				109,105,000
Acquisition of treasury stock (in shares)						(217)
Acquisition of treasury stock	(1,960,000)					$ (1,960,000)	(1,960,000)
Exercise of stock options (in shares)		277				637
Exercise of stock options	6,565,000	$ 3,000	(5,000)			$ 6,567,000	6,565,000
Tax deficit from exercise of stock options and compensatory stock	(1,000)		(1,000)				(1,000)
Compensatory awards released from restriction (in shares)		110				353
Compensatory awards released from restriction	0	$ 1,000	(3,763,000)			$ 3,762,000
Share-based compensation	7,542,000		7,542,000				7,542,000
Stock dividends (in shares)		8				5
Stock dividends	0		8,000	(62,000)		$ 54,000
Cash dividends	(3,391,000)			(3,391,000)			(3,391,000)
Equity adjustment from foreign currency translation	(11,542,000)				(11,542,000)		(11,542,000)
Equity adjustment from derivative instruments, net of tax	525,000				525,000		525,000
Net income	14,568,000			14,568,000			14,568,000
Ending balance (in shares) at Dec. 31, 2015		93,769				(2)
Ending balance at Dec. 31, 2015	412,945,000	$ 938,000	322,793,000	101,047,000	(11,813,000)	$ (20,000)	412,945,000	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Acquisition of treasury stock (in shares)						(572)
Acquisition of treasury stock	(5,144,000)					$ (5,144,000)	(5,144,000)
Exercise of stock options (in shares)						374
Exercise of stock options	2,637,000		(697,000)			$ 3,334,000	2,637,000
Tax deficit from exercise of stock options and compensatory stock	20,000		20,000				20,000
Compensatory awards released from restriction (in shares)		440				101
Compensatory awards released from restriction	0	$ 4,000	(920,000)			$ 916,000
Share-based compensation	8,965,000		8,965,000				8,965,000
Stock dividends (in shares)		5				1
Stock dividends	0		45,000	(54,000)		$ 9,000
Cash dividends	(3,764,000)			(3,764,000)			(3,764,000)
Equity adjustment from foreign currency translation	(8,831,000)				(7,727,000)		(7,727,000)	(1,104,000)
Equity adjustment from derivative instruments, net of tax	1,074,000				1,074,000		1,074,000
Distributions to non-controlling interests (see Note 7)	9,744,000							9,744,000
Net income	190,954,000			189,900,000			189,900,000	1,054,000
Ending balance (in shares) at Dec. 31, 2016		94,214				(98)
Ending balance at Dec. 31, 2016	608,600,000	$ 942,000	330,206,000	287,129,000	(18,466,000)	$ (905,000)	598,906,000	9,694,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Acquisition of treasury stock (in shares)						(1,536)
Acquisition of treasury stock	$ (16,617,000)					$ (16,617,000)	(16,617,000)
Exercise of stock options (in shares)	681					681
Exercise of stock options	$ 5,362,000		(1,899,000)			$ 7,261,000	5,362,000
Compensatory awards released from restriction (in shares)		825				542
Compensatory awards released from restriction	0	$ 8,000	(5,813,000)			$ 5,805,000
Share-based compensation	12,647,000		12,647,000				12,647,000
Stock dividends (in shares)		4
Stock dividends	0		81,000	(81,000)
Cash dividends	(3,773,000)			(3,773,000)			(3,773,000)
Equity adjustment from foreign currency translation	14,361,000				14,198,000		14,198,000	163,000
Equity adjustment from derivative instruments, net of tax	(1,898,000)				(1,898,000)		(1,898,000)
Distributions to non-controlling interests (see Note 7)	(974,000)							(974,000)
Net income	41,667,000			40,806,000			40,806,000	861,000
Ending balance (in shares) at Dec. 31, 2017		95,043				(411)
Ending balance at Dec. 31, 2017	$ 659,375,000	$ 950,000	$ 335,222,000	$ 324,081,000	$ (6,166,000)	$ (4,456,000)	$ 649,631,000	$ 9,744,000

The Company

The Company	12 Months Ended
	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company	Note 1. The Company Callaway Golf Company (“Callaway Golf” or the “Company”), a Delaware corporation, together with its subsidiaries, designs, manufactures and sells high quality golf clubs (drivers, fairway woods, hybrids, irons, wedges and putters), golf balls, golf bags and other golf-related accessories. The Company generally sells its products to golf retailers (including pro shops at golf courses and off-course retailers), sporting goods retailers, Internet retailers and mass merchants, directly and through its wholly-owned subsidiaries, and to third-party distributors in the United States and in over 100 countries around the world. The Company also sells pre-owned Callaway Golf products through its website www.callawaygolfpreowned.com and sells new Callaway Golf products through its websites www.callawaygolf.com and www.odysseygolf.com.In 2016, the Company further expanded its business into golf and lifestyle apparel and accessories with the completion of the golf apparel joint venture in Japan in July 2016. In 2017, the Company acquired OGIO International, Inc. ("OGIO"), a leading manufacturer of high quality bags, accessories and apparel in the golf and lifestyle categories, and TravisMathew, LLC ("TravisMathew"), a golf and lifestyle apparel company. These acquisitions are expected to enhance the Company's presence in golf while also providing a platform for future growth in the lifestyle category. In connection with the apparel joint venture in Japan and the TravisMathew acquisition, the Company now has retail locations in Japan and the U.S. that sell Callaway and TravisMathew branded apparel, gear and other golf accessories directly to consumers. In addition, the Company licenses its trademarks and service marks in exchange for a royalty fee to third parties for use on golf related accessories including golf apparel and footwear, golf gloves, prescription eyewear and practice aids as well as OGIO branded gear and accessories.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its domestic and foreign subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Examples of such estimates include provisions for warranty, uncollectible accounts receivable, inventory obsolescence, sales returns, tax contingencies and provisional estimates due to the Tax Cuts and Jobs Act (the "Tax Act") enacted in December 2017, estimates on the valuation of share-based awards and recoverability of long-lived assets and investments. Actual results may materially differ from these estimates. On an ongoing basis, the Company reviews its estimates to ensure that these estimates appropriately reflect changes in its business or as new information becomes available. Recent Accounting Standards In August 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The new standard is designed to refine and expand hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes. It also makes certain targeted improvements to simplify the application of hedge accounting guidance. The new standard is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption, including adoption in an interim period, is permitted. If early adoption is elected in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period (i.e., the initial application date). The Company is currently evaluating the impact this ASU will have on its consolidated condensed financial statements and disclosures. In March 2016, the FASB issued ASU No. 2016-09, "Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting." This amendment is intended to simplify several aspects of the accounting for share-based payment transactions, including (i) the recognition of excess tax benefits or deficiencies in the operating statement when compensatory stock awards are vested and settled, and the presentation of these tax benefits or deficiencies as an operating cash outflow on the statement of cash flows, (ii) the option to withhold the maximum statutory tax rate on the settlement of compensatory stock without triggering liability accounting, as well as presenting the shares withheld for the settlement of these taxes as a financing outflow on the statement of cash flows, and (iii) the option to elect a change in the accounting policy to account for forfeitures as they occur. This amendment became effective for the Company as of January 1, 2017. The Company adopted this ASU using the modified retrospective transition method with respect to the recognition of excess tax benefits in the consolidated condensed statement of operations. The adoption did not result in a cumulative-effect adjustment to equity as of January 1, 2017. The amendment related to the cash flow presentation of shares acquired to satisfy the Company's minimum tax withholding requirements in connection with the settlement of compensatory stock was applied retrospectively as a financing outflow. The adoption had no impact to any periods presented on the consolidated condensed statement of cash flows as these cash outflows have historically been presented as a financing activity. The Company elected not to change its accounting policy on the recognition of estimated forfeitures. In March 2016, the FASB issued ASU No. 2016-04, "Liabilities—Extinguishment of Liabilities (Subtopic 405-20): Recognition of Breakage for Certain Prepaid Stored-Value Products." The amendment clarifies when it is acceptable to recognize the unredeemed portion of prepaid gift cards into income, and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, with early adoption permitted. The Company does not expect the adoption of this amendment will have a material impact on the Company's consolidated financial statements. As of December 31, 2017 , the Company had $971,000 of deferred revenue related to unredeemed gift cards. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)." Under the new guidance, lessees will be required to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (i) a lease liability, which is a lessee's obligation to make lease payments arising from a lease, measured on a discounted basis; and (ii) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged and lessees will no longer be provided with a source of off-balance sheet financing. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the impact this ASU will have on its consolidated financial statements and disclosures. In January 2016, the FASB issued ASU No. 2016-01, "Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities." The amendment requires (i) equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, (ii) public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and (iii) separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables). This amendment eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. This amendment is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. As of December 31, 2017, the Company had an investment in Topgolf International, Inc. of $70,495,000 , consisting of common stock and various classes of preferred stock, that was accounted for at cost in accordance with ASC Topic 325, “Investments—Other.” Based on prior observable market transactions, the Company believes that the fair value of its investment in Topgolf significantly exceeds its cost. If there are any observable price changes related to this investment or a similar investment of the same issuer in fiscal years beginning after December 15, 2017, the Company would be required to assess the fair value impact, if any, on each class of stock, and write the individual security interest up or down to its estimated fair value, which could have a significant effect on the Company's financial position and results of operations (see Note 7 ). In July 2015, the FASB issued ASU No. 2015-11, "Inventory (Topic 330): Simplifying the Measurement of Inventory." This amendment requires an entity to measure in-scope inventory at the lower of cost or net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. For public business entities, this ASU is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The adoption of this amendment did not have a material impact on the Company's consolidated condensed financial statements. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers: (Topic 606)." This ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (e.g., insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosures regarding revenue and contracts with customers. The Company completed its analysis of this ASU, and determined that the new standard will not change the total amount of revenue recognized, only accelerate the timing of accruals of certain sales promotions and price concessions that the Company offers to its retailers to earlier in the product life cycle. This shift in expense will have an impact on quarter-over-quarter net sales trends. The Company will adopt the new standard as of January 1, 2018 using the modified retrospective approach, which requires the prospective application of the new standard with disclosures of results under the old standard in order to make period over period comparisons comparable. Upon adoption, the Company expects to record a one-time reduction to retained earnings, net of income taxes, of approximately $11,000,000 , with a corresponding reduction to accounts receivable and an increase to deferred tax assets in its consolidated condensed balance sheet. Revenue Recognition Through December 31, 2017, the Company accounted for revenue recognition in accordance with Accounting Standards Codification (“ASC”) Topic 605, “Revenue Recognition.” As stated above, beginning on January 1, 2018, the Company will account for revenue recognition under Topic 606, "Revenue from Contracts with Customers," which will accelerate the timing of certain sales promotions and price concessions that the Company offers to its retailers to earlier in the product life cycle. In accordance with Topic 605, sales are recognized, in general, as products are shipped to customers, and at point of sale for transactions in retail locations, net of an allowance for sales returns and sales programs. In certain cases, the Company recognizes sales when products are received by customers. The criteria for recognition of revenue are met when persuasive evidence that an arrangement exists and both title and risk of loss have passed to the customer, the price is fixed or determinable and collectability is reasonably assured. Sales returns are estimated based upon historical returns, current economic trends, changes in customer demands and sell-through of products. The Company also records estimated reductions to revenue for sales programs such as incentive offerings. Sales program accruals are estimated based upon the attributes of the sales program, management’s forecast of future product demand, and historical customer participation in similar programs. The increase in the allowance for sales returns as of December 31, 2017 compared to December 31, 2016 was due to a shift in the timing of one of the Company's major return programs. The following table provides a reconciliation of the activity related to the Company’s allowance for sales returns: Years Ended December 31, 2017 2016 2015 (In thousands) Beginning balance $ 9,341 $ 8,148 $ 8,944 Provision 37,521 38,444 35,746 Sales returns (31,392 ) (37,251 ) (36,542 ) Ending balance $ 15,470 $ 9,341 $ 8,148 Revenues from gift cards are deferred and recognized when the cards are redeemed. In addition, the Company recognizes revenue from unredeemed gift cards when the likelihood of redemption becomes remote and under circumstances that comply with any applicable state escheatment laws. The Company’s gift cards have no expiration date. To determine when redemption is remote, the Company analyzes an aging of unredeemed cards (based on the date the card was last used or the activation date if the card has never been used) and compares that information with historical redemption trends. The deferred revenue associated with outstanding gift cards decreased to $971,000 at December 31, 2017 from $1,273,000 at December 31, 2016 . The amounts are recorded in accounts payable and accrued expenses on the accompanying consolidated balance sheets. Royalty income is recorded in net sales as underlying product sales occur, subject to certain minimums, in accordance with the related licensing arrangements. The Company recognized royalty income under its various licensing agreements of $18,622,000 , $7,622,000 and $8,062,000 during 2017 , 2016 and 2015 , respectively. The increase in royalty income in 2017 compared to 2016 was primarily due to royalties recognized in connection with OGIO branded products. Warranty Policy The Company has a stated two -year warranty policy for its golf clubs. The Company’s policy is to accrue the estimated cost of satisfying future warranty claims at the time the sale is recorded. In estimating its future warranty obligations, the Company considers various relevant factors, including the Company’s stated warranty policies and practices, the historical frequency of claims, and the cost to replace or repair its products under warranty. The increase in warranty expense and the claims paid in 2017 compared to 2016 was primarily due to additional claims related to certain 2015 putter models. The Company believes it has resolved the quality issues related to these putters. The following table provides a reconciliation of the activity related to the Company’s reserve for warranty expense: Years Ended December 31, 2017 2016 2015 (In thousands) Beginning balance $ 5,395 $ 5,706 $ 5,607 Provision 9,434 5,493 5,220 Claims paid/costs incurred (8,172 ) (5,804 ) (5,121 ) Ending balance $ 6,657 $ 5,395 $ 5,706 Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or the price paid to transfer a liability (the exit price) in the principal and most advantageous market for the asset or liability in an orderly transaction between market participants. The Company measures and discloses the fair value of nonfinancial and financial assets and liabilities utilizing a hierarchy of valuation techniques based on whether the inputs to a fair value measurement are considered to be observable or unobservable in a marketplace. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. This hierarchy requires the use of observable market data when available. The measurement of assets and liabilities at fair value are classified using the following three-tier hierarchy: Level 1 : Quoted market prices in active markets for identical assets or liabilities; Level 2 : Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and Level 3 : Fair value measurements derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. The Company measures fair value using a set of standardized procedures that are outlined herein for all assets and liabilities which are required to be measured at fair value. When available, the Company utilizes quoted market prices from an independent third-party source to determine fair value and classifies such items in Level 1. In some instances where a market price is available, but the instrument is in an inactive or over-the-counter market, the Company consistently applies the dealer (market maker) pricing estimate and uses a midpoint approach on bid and ask prices from financial institutions to determine the reasonableness of these estimates. Assets and liabilities subject to this fair value valuation approach are typically classified as Level 2. Items valued using internally-generated valuation techniques are classified according to the lowest level input that is significant to the fair value measurement. As a result, the asset or liability could be classified in either Level 2 or Level 3 even though there may be some significant inputs that are readily observable. The Company utilizes a discounted cash flow valuation model whenever applicable to derive a fair value measurement on long-lived assets and goodwill and intangible assets. The Company uses its internal cash flow estimates discounted at an appropriate rate, quoted market prices, royalty rates when available and independent appraisals as appropriate. The Company also considers its counterparty’s and own credit risk on derivatives and other liabilities measured at their fair value. Advertising Costs The Company's primary advertising costs are from television and print media advertisements. The Company’s policy is to expense advertising costs, including production costs, as incurred. Advertising expenses for 2017 , 2016 and 2015 were $62,898,000 , $59,003,000 and $57,392,000 , respectively. Research and Development Costs Research and development costs are expensed as incurred. Research and development costs for 2017 , 2016 and 2015 were $36,568,000 , $ 33,318,000 and $ 33,213,000 , respectively. Foreign Currency Translation and Transactions A significant portion of the Company’s business is conducted outside of the United States in currencies other than the U.S. dollar. As a result, changes in foreign currency exchange rates can have a significant effect on the Company’s financial results. Revenues and expenses that are denominated in foreign currencies are translated using the average exchange rate for the period. Assets and liabilities are translated at the rate of exchange on the balance sheet date. Gains and losses from assets and liabilities denominated in a currency other than the functional currency of the entity on which they reside are generally recognized currently in the Company's statements of operations. Gains and losses from the translation of foreign subsidiary financial statements into U.S. dollars are included in accumulated other comprehensive income or loss (see Accumulated Other Comprehensive Income policy below). The Company recorded a net gain in foreign currency transactions of $808,000 and $226,000 in 2017 and 2016, respectively, and a net loss of $1,611,000 in 2015 . Derivatives and Hedging In order to mitigate the impact of foreign currency translation on transactions, the Company uses foreign currency forward contracts that are accounted for as non-designated and designated hedges pursuant to ASC Topic 815, “Derivatives and Hedging” ("ASC Topic 815"). ASC Topic 815 requires that an entity recognize all derivatives as either assets or liabilities in the balance sheet, measure those instruments at fair value and recognize changes in the fair value of derivatives in earnings in the period of change unless the derivative qualifies as designated cash flow hedge that offsets certain exposures. Certain criteria must be satisfied in order for derivative financial instruments to be classified and accounted for as a cash flow hedge. Gains and losses from the remeasurement of qualifying cash flow hedges are recorded as a component of other comprehensive income and released into earnings as a component of cost of goods sold or net sales during the period in which the hedged transaction takes place. Gains and losses on the ineffective portion of hedges (hedges that do not meet accounting requirements due to ineffectiveness) and derivatives that are not elected for hedge accounting treatment are immediately recorded in earnings as a component of other income (expense). Cash and Cash Equivalents Cash equivalents are highly liquid investments purchased with original maturities of three months or less. Trade Accounts Receivable The Company records its trade accounts receivable at net realizable value. This value includes an appropriate allowance for estimated uncollectible accounts to reflect any loss anticipated on the trade accounts receivable balances and charged to the provision for doubtful accounts. An estimate of uncollectible amounts is made by management based upon historical bad debts, current customer receivable balances, age of customer receivable balances, the customer’s financial condition and current economic trends, all of which are subject to change. Actual uncollected amounts have historically been consistent with the Company’s expectations. In general, the Company has trade insurance to mitigate the risk of uncollectible accounts on its outstanding accounts receivable. The Company considers this insurance coverage when estimating its provision for uncollectible accounts. Insurance claim recoveries from this trade insurance are applied to the Company’s outstanding accounts receivable or are recorded as a reduction to bad debt expense in the period in which the claim is received. The following table provides a reconciliation of the activity related to the Company’s allowance for doubtful accounts: Years Ended December 31, 2017 2016 2015 (In thousands) Beginning balance $ 5,728 $ 5,645 $ 6,460 Provision 2,335 2,398 992 Write-off of uncollectible amounts, net of recoveries (3,616 ) (2,315 ) (1,807 ) Ending balance $ 4,447 $ 5,728 $ 5,645 Inventories Inventories are valued at the lower of cost or net realizable value. Cost is determined using the first-in, first-out (FIFO) method. The inventory balance, which includes material, labor and manufacturing overhead costs, is recorded net of an estimate for obsolete or unmarketable inventory. This estimate is based upon current inventory levels, sales trends and historical experience as well as management’s estimates of market conditions and forecasts of future product demand, all of which are subject to change. Property, Plant and Equipment Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over estimated useful lives as follows: Buildings and improvements 10-30 years Machinery and equipment 5-10 years Furniture, computers and equipment 3-5 years Production molds 2-5 years Normal repairs and maintenance costs are expensed as incurred. Expenditures that materially increase values, change capacities or extend useful lives are capitalized. The related costs and accumulated depreciation of disposed assets are eliminated and any resulting gain or loss on disposition is included in net income/(loss). Construction in-process consists primarily of costs associated with building improvements, machinery and equipment that have not yet been placed into service, unfinished molds as well as in-process internally developed software. In accordance with ASC Topic 350-40, “Internal-Use Software,” the Company capitalizes certain costs incurred in connection with developing or obtaining internal use software. Costs incurred in the preliminary project stage are expensed. All direct external costs incurred to develop internal-use software during the development stage are capitalized and amortized using the straight-line method over the remaining estimated useful lives. Costs such as maintenance and training are expensed as incurred. Long-Lived Assets In accordance with ASC Topic 360-10-35, “Impairment or Disposal of Long-Lived Assets”, the Company assesses potential impairments of its long-lived assets whenever events or changes in circumstances indicate that the asset’s carrying value may not be recoverable. An impairment charge would be recognized when the carrying amount of a long-lived asset or asset group is not recoverable and exceeds its fair value. The carrying amount of a long-lived asset or asset group is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset or asset group. Goodwill and Intangible Assets Goodwill and intangible assets, which consist of trade names, trademarks, service marks, trade dress, patents and other intangible assets, were acquired in connection with the acquisition of Odyssey Sports, Inc. in 1997, FrogTrader, Inc. in 2004, OGIO in January 2017, TravisMathew in August 2017, and certain foreign distributors. In accordance with ASC Topic 350, “Intangibles—Goodwill and Other,” goodwill and intangible assets with indefinite lives are not amortized but instead are measured for impairment at least annually or more frequently when events indicate that an impairment exists. The Company calculates impairment as the excess of the carrying value of goodwill and other indefinite-lived intangible assets over their estimated fair value. If the carrying value exceeds the estimate of fair value a write-down is recorded. To determine fair value, the Company uses its internal discounted cash flow estimates, quoted market prices, royalty rates when available and independent appraisals when appropriate. The Company completed its annual impairment test and fair value analysis of goodwill and other indefinite-lived intangible assets as of December 31, 2017 , and the estimated fair values of the Company’s reporting units, as well as the estimated fair values of certain trade names and trademarks, significantly exceeded their carrying values. As a result, no impairment was recorded as of December 31, 2017 . Intangible assets that are determined to have definite lives are amortized over their estimated useful lives and are measured for impairment only when events or circumstances indicate the carrying value may be impaired in accordance with ASC Topic 360-10-35 discussed above. See Note 6 for further discussion of the Company’s goodwill and intangible assets. Investments The Company determines the appropriate classification of its investments at the time of acquisition and reevaluates such classification at each balance sheet date. Investments that do not have readily determinable fair values are stated at cost. The Company monitors investments for impairment whenever events or changes in circumstances indicate that the investment's carrying value may not be recoverable. An impairment charge would be recognized when the carrying amount exceeds its fair value. See Note 7 for further discussion of the Company’s investments. Share-Based Compensation The Company accounts for its share-based compensation arrangements in accordance with ASC Topic 718, “Compensation—Stock Compensation” (“ASC Topic 718”), which requires the measurement and recognition of compensation expense for all share-based payment awards to employees and non-employees based on estimated fair values. ASC Topic 718 further requires a reduction in share-based compensation expense by an estimated forfeiture rate. The forfeiture rate used by the Company is based on historical forfeiture trends. If actual forfeiture rates are not consistent with the Company’s estimates, the Company may be required to increase or decrease compensation expenses in future periods. Performance share units are stock-based awards in which the number of shares ultimately received depends on the Company's performance against specified goals that are measured over a designated performance period from the date of grant. These performance goals are established by the Company at the beginning of the performance period. At the end of the performance period, the number of shares of stock that could be issued is fixed based upon the degree of achievement of the performance goals. The number of shares that could be issued can range from 0% to 200% of the participant's target award. Performance share units are initially valued at the Company's closing stock price on the date of grant. Compensation expense, net of estimated forfeitures, is recognized over the vesting period and will vary based on the anticipated performance level during the performance period. If the performance goals are not probable of achievement during the performance period, compensation expense would be reversed. The awards are forfeited if the performance goals are not achieved as of the end of the performance period. The performance units vest in full at the end of a three -year period. The Company uses the Black-Scholes option valuation model to estimate the fair value of its stock options and stock appreciation rights (“SARs”) at the date of grant. The Black-Scholes option valuation model requires the input of subjective assumptions to calculate the value of stock options/SARs. The Company uses historical data among other information to estimate the expected price volatility, expected term and forfeiture rate. The Company uses forecasted dividends to estimate the expected dividend yield. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant. Compensation expense is recognized on a straight-line basis over the vesting period for stock options. Compensation expense for SARs is recognized on a straight-line basis over the vesting period based on an estimated fair value, which is remeasured at the end of each reporting period. Once vested, the SARs continue to be remeasured to fair value until they are exercised. The Company records compensation expense for restricted stock awards and restricted stock units (collectively “restricted stock”) based on the estimated fair value of the award on the date of grant. The estimated fair value is determined based on the closing price of the Company’s common stock on the award date multiplied by the number of shares underlying the restricted stock awarded. Total compensation expense is recognized on a straight-line basis over the vesting period. Phantom stock units are a form of share-based awards that are indexed to the Company’s stock and are settled in cash. Compensation expense is recognized on a straight-line basis over the vesting period based on the award’s estimated fair value. Fair value is remeasured at the end of each interim reporting period through the award’s settlement date and is based on the closing price of the Company’s stock. Income Taxes Current income tax expense or benefit is the amount of income taxes expected to be payable or receivable for the current year. A deferred income tax asset or liability is established for the difference between the tax basis of an asset or liability computed pursuant to ASC Topic 740 and its reported amount in the financial statements that will result in taxable or deductible amounts in future years when the reported amount of the asset or liability is recovered or settled, respectively. The Company maintains a valuation allowance for a deferred tax asset when it is deemed to be more likely than not that some or all of the deferred tax asset will not be realized. In evaluating whether a valuation allowance is required under such rules, the Company considers all available positive and negative evidence, including prior operating results, the nature and reason for any losses, its forecast of future taxable income, and the dates on which any deferred tax assets are expected to expire. These assumptions require a significant amount of judgment, including estimates of future taxable income. These estimates are ba

Business Combinations (Notes)

Business Combinations (Notes)	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Note 3. Business Combinations During 2017, the Company completed the acquisitions of OGIO and TravisMathew. The purchase price of each acquisition was allocated to the underlying assets acquired and liabilities assumed based upon their estimated fair values as of the date of acquisition in accordance with ASC Topic 820, "Fair Value Measurement." The excess between the purchase price and the fair value of the net identifiable tangible and intangible assets acquired and liabilities assumed was allocated to goodwill. The Company determined the estimated fair values after review and consideration of relevant information, including discounted cash flows, quoted market prices and estimates made by management. The Company may retrospectively adjust the fair value of the identifiable assets acquired and the liabilities assumed, as necessary, during the measurement period of up to one year from the acquisition date, to reflect new information existing at the acquisition date affecting the measurement of those amounts at that date, and any additional assets or liabilities existing at that date. Valuations of acquired intangible assets and inventory are subject to fair value measurements that were based primarily on significant inputs not observable in the market and thus represent Level 3 measurements (see Note 15 ). Both acquisitions were treated as asset purchases for income tax purposes and, as such, the Company expects to deduct all of the intangible assets, including goodwill. Acquisition of OGIO International, Inc. On January 11, 2017, the Company acquired all of the outstanding shares of capital stock of OGIO, a leading manufacturer of high quality bags, accessories and apparel in the golf and lifestyle categories, in a cash transaction pursuant to the terms of a Share Purchase Agreement, by and among the Company, OGIO, and each of the shareholders and option holders of OGIO. The acquired furniture, fixtures, office equipment, leasehold improvements, computer equipment and warehouse equipment were all valued at their estimated replacement cost, which the Company determined approximated the net book value of the assets on the date of the acquisition. Inventory was valued using the net realizable value approach, which was based on the estimated selling price in the ordinary course of business less reasonable disposal costs. The customer and distributor relationships were valued under the income approach based on the present value of future earnings. The trade name was valued under the royalty savings income approach method, which is equal to the present value of the after-tax royalty savings attributable to owning the trade name as opposed to paying a third party for its use. For this valuation, the Company used a royalty rate of 7.5% , which is reflective of royalty rates paid in market transactions, and a discount rate of 14.0% on the future cash flows generated by the net after-tax savings. Goodwill arising from the acquisition consists largely of the synergies expected from combining the operations of the Company and OGIO. For segment reporting purposes, goodwill is reported in the Gear, Accessories and Other operating segment. The total purchase price was valued at $65,951,000 . The Company incurred transaction costs of approximately $3,052,000 , of which $1,805,000 was recognized in general and administrative expenses during the twelve months ended December 31, 2017 . The remainder was recognized in 2016. The following table summarizes the fair values of the assets acquired and liabilities assumed as of the acquisition date based on the purchase price allocation (in thousands): At January 11, 2017 Assets Acquired Cash $ 8,061 Accounts receivable 7,696 Inventory 7,092 Other current assets 328 Property and equipment 2,369 Intangibles - trade name 49,700 Intangibles - customer & distributor relationships 1,500 Intangibles - non-compete agreements 150 Goodwill 5,885 Total assets acquired 82,781 Liabilities Assumed Accounts Payable and accrued liabilities 16,830 Net assets acquired $ 65,951 Acquisition of TravisMathew, LLC On August 17, 2017, the Company acquired TravisMathew, a golf and lifestyle apparel company in an all-cash transaction pursuant to the terms of an Agreement and Plan of Merger, by and among the Company, TravisMathew, OTP LLC, a California limited liability company and wholly-owned subsidiary of the Company (“Merger Sub”), and a representative of the equity holders of TravisMathew. The Company acquired TravisMathew by way of a merger of Merger Sub with and into TravisMathew, with TravisMathew surviving as a wholly-owned subsidiary of the Company. The acquisition is expected to enhance the Company's strategy of developing growth in areas tangential to the golf equipment business. The acquired furniture, fixtures, office equipment, leasehold improvements, computer equipment and warehouse equipment were all valued at their estimated replacement cost, which the Company determined approximated the net book value of the assets on the date of the acquisition. Inventory was valued using the net realizable value approach, which was based on the estimated selling price in the ordinary course of business less reasonable disposal costs. The licensing agreement was valued under the income approach based on the projected royalty income from the distributors. The customer and distributor relationships were valued under the income approach based on the present value of future earnings. The trade name was valued under the royalty savings income approach method, which is equal to the present value of the after-tax royalty savings attributable to owning the trade name as opposed to paying a third party for its use. For this valuation, the Company used a royalty rate of 8.0% , which is reflective of royalty rates paid in market transactions, and a discount rate of 11.0% on the future cash flows generated by the net after-tax savings. Goodwill arising from the acquisition consists largely of the synergies expected from combining the operations of the Company and TravisMathew. For segment reporting purposes, goodwill is reported in the Gear, Accessories and Other operating segment. The total purchase price was valued at $124,578,000 . In connection with the acquisition, during the year ended December 31, 2017 , the Company recognized transaction costs of approximately $2,521,000 in general and administrative expenses. The following table summarizes the preliminary estimated fair values of the assets acquired and liabilities assumed as of the acquisition date based on the purchase price allocation (in thousands): At August 17, 2017 Assets Acquired Cash $ 663 Accounts receivable 9,715 Inventory 11,909 Other current assets 549 Property and equipment 4,327 Other assets 117 Intangibles - trade name 78,400 Intangibles - licensing agreement 1,100 Intangibles - customer & distributor relationships 4,450 Intangibles - non-compete agreements 600 Goodwill 23,640 Total assets acquired 135,470 Liabilities Assumed Accounts Payable and accrued liabilities 10,892 Net assets acquired $ 124,578 Supplemental Pro-Forma Information (Unaudited) The following table presents supplemental pro-forma information for the years ended December 31, 2017 and 2016 as if both the OGIO and TravisMathew acquisitions had occurred on January 1, 2016. These amounts have been calculated after applying the Company's accounting policies and are based upon currently available information. For this analysis, the Company assumed that costs associated with the acquisitions, including the amortization of intangible assets and the step-up of inventory, as well as the tax effect on those costs, were recognized as of January 1, 2016. Pre-acquisition net sales and net income amounts for both OGIO and TravisMathew were derived from the books and records of OGIO and TravisMathew prepared prior to the respective acquisition and are presented for informational purposes only and do not purport to be indicative of the results of future operations or of the results that would have occurred had the acquisition taken place as of the dates noted below. Years Ended December 31, 2017 2016 (in thousands) Net sales $ 1,086,593 $ 964,514 Net income (loss) attributable to Callaway Golf Company $ 52,514 $ 188,117 For the year ended December 31, 2017 , the Company's consolidated net sales included $66,670,000 attributable to OGIO and TravisMathew. Due to the integration of OGIO into the Company's operations since the day of acquisition, the net income for OGIO could not be determined and is therefore not presented. The Company's consolidated results of operations for the year ended December 31, 2017 included a net loss of $1,721,000 related to TravisMathew.

Financing Arrangements

Financing Arrangements	12 Months Ended
	Dec. 31, 2015
Debt Disclosure [Abstract]
Financing Arrangements	Note 4. Financing Arrangements In addition to cash on hand, as well as cash generated from operations, the Company relies on its primary asset-based revolving credit facility and its Japan asset-based revolving credit facilities to manage seasonal fluctuations in liquidity and to provide additional liquidity when the Company’s operating cash flows are not sufficient to fund the Company’s requirements. As of December 31, 2017 , the Company had $87,755,000 outstanding under these facilities, $887,000 in outstanding letters of credit, and $85,674,000 in cash and cash equivalents. As of December 31, 2017 , the Company's available liquidity, which is comprised of cash on hand and amounts available under both facilities, after letters of credit was $238,884,000 . At December 31, 2016 the Company had $11,966,000 outstanding under these facilities, $823,000 in outstanding letters of credit, and $125,975,000 in cash and cash equivalents. As of December 31, 2016 , the Company's available liquidity was $225,216,000 . Primary Asset-Based Revolving Credit Facility In November 2017, the Company amended and restated its primary credit facility (the Third Amended and Restated Loan and Security Agreement) with Bank of America N.A. and other lenders (the “ABL Facility”), which provides a senior secured asset-based revolving credit facility of up to $330,000,000 , comprised of a $260,000,000 U.S. facility (of which $20,000,000 is available for letters of credit), a $25,000,000 Canadian facility (of which $5,000,000 is available for letters of credit), and a $45,000,000 United Kingdom facility (of which $2,000,000 is available for letters of credit), in each case subject to borrowing base availability under the applicable facility. The amounts outstanding under the ABL Facility are secured by certain assets, including cash (to the extent pledged by the Company), the Company's intellectual property, certain eligible real estate, inventory and accounts receivable of the Company’s subsidiaries in the United States, Canada and the United Kingdom. The real estate and intellectual property components of the borrowing base under the ABL Facility are both amortizing. The amount available for the real estate portion is reduced quarterly over a 15 -year period, and the amount available for the intellectual property portion is reduced quarterly over a 3 -year period. As of December 31, 2017 , the Company had $74,000,000 in borrowings outstanding under the ABL Facility and $887,000 in outstanding letters of credit. Amounts available under the ABL Facility fluctuate with the general seasonality of the business and increase and decrease with changes in the Company’s inventory and accounts receivable balances. Amounts available are highest during the first half of the year when the Company’s inventory and accounts receivable balances are higher and lower during the second half of the year when the Company's inventory levels decrease and its accounts receivable decrease as a result of cash collections and lower sales. Average outstanding borrowings during the year ended December 31, 2017 were $40,657,000 , and average amounts available under the ABL Facility during the year ended December 31, 2017 , after outstanding borrowings and letters of credit, was approximately $118,282,000 . Amounts borrowed under the ABL Facility may be repaid and borrowed as needed. The entire outstanding principal amount (if any) is due and payable at November 20, 2022 . The ABL Facility includes certain restrictions including, among other things, restrictions on the incurrence of additional debt, liens, stock repurchases and other restricted payments, asset sales, investments, mergers, acquisitions and affiliate transactions. In addition, the ABL Facility imposes restrictions on the amount the Company could pay in annual cash dividends, including meeting certain restrictions on the amount of additional indebtedness and requirements to maintain a certain fixed charge coverage ratio under certain circumstances . As of December 31, 2017 , the Company was in compliance with all financial covenants of the ABL Facility. Additionally, the Company is subject to compliance with a fixed charge coverage ratio covenant during, and continuing 30 days after, any period in which the Company’s borrowing base availability, as amended, falls below 10% of the maximum facility amount. The Company’s borrowing base availability was above $33,000,000 during the year ended December 31, 2017 , and the Company was in compliance with the fixed charge coverage ratio as of December 31, 2017 . Had the Company not been in compliance with the fixed charge coverage ratio as of December 31, 2017 , the Company's maximum amount of additional indebtedness that could have been outstanding on December 31, 2017 would have been reduced by $33,000,000 . The interest rate applicable to outstanding loans under the ABL Facility fluctuates depending on the Company’s “availability ratio," which is expressed as a percentage of (i) the average daily availability under the ABL Facility to (ii) the sum of the Canadian, the U.K. and the U.S. borrowing bases, as adjusted. The applicable margin for any month will be reduced by 0.25% if the Company’s availability ratio is greater than or equal to 67% so long as no default or event of default exists. At December 31, 2017 , the Company’s trailing 12-month average interest rate applicable to its outstanding loans under the ABL Facility was 3.32% . The ABL Facility provides for monthly fees of 0.25% of the unused portion of the ABL Facility. The fees incurred in connection with the origination and amendment of the ABL Facility totaled $2,246,000 , which are amortized into interest expense over the term of the ABL Facility agreement. Unamortized origination fees as of December 31, 2017 and 2016 were $2,197,000 and $1,297,000 , respectively, of which $454,000 and $519,000 , respectively, were included in other current assets and $1,743,000 and $778,000 , respectively, were included in other long-term assets in the accompanying consolidated balance sheets. In addition to the revolving credit facility, the Company also has a senior secured term loan facility (the "Term Loan Facility") in an amount $30,000,000 under the ABL Facility agreement, which is secured by a portion of the Company's intellectual property. The Term Loan Facility provides for a monthly commitment fee equal to 0.50% on the unused portion of the Term Loan Facility until the Term Loan Facility is drawn or terminated. The Term Loan Facility may be borrowed at any time until April 20, 2018 and will begin amortizing 15 months after the borrowing date. If the Term Loan Facility is ever outstanding, the Company must maintain a minimum Fixed Charge Coverage Ratio of 1.25 and a maximum leverage ratio of 4.0 . The entire outstanding principal amount (if any) is due and payable at November 20, 2021 . There were no amounts outstanding under the Term Loan Facility as of December 31, 2017 . The Term Loan Facility is also subject to a one-time excess cash flow payment for the 2018 fiscal year, which cannot exceed the least of (i) 50% of excess cash flow, (ii) $10 million and (iii) the amount that would put the Company into cash dominion under the ABL Facility. The excess cash flow payment must be made within 60 days after the delivery of audited financial statements for 2018. Japan ABL Facility The Company has a separate asset-based loan and guarantee agreement between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, Ltd and The Development Bank of Japan (as amended, the "Japan ABL Facility"), which provides a credit facility of up to 2,000,000,000 Yen (or U.S. $17,748,000 , using the exchange rate in effect as of December 31, 2017 ) over a two -year term, subject to borrowing base availability under the facility. The amounts outstanding are secured by certain assets, including eligible inventory. The Company had 1,550,000,000 Yen (or U.S. $13,755,000 ) outstanding under this facility at December 31, 2017 . The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2017 , the Company was in compliance with these covenants. This facility is subject to an effective interest rate equal to TIBOR plus 0.25% . At December 31, 2017 , the trailing 12-month average interest rate applicable to the Company's outstanding borrowings under this facility was 0.28% . During the first quarter of 2017, the Company entered into a second asset-based loan between its subsidiary in Japan and The Bank of Tokyo-Mitsubishi UFG, LTD, which provides a credit facility of up to 1,000,000,000 Yen (or U.S. $8,874,000 ) over a 10-month term, subject to borrowing base availability under the facility. The amounts outstanding are secured by certain assets, including eligible accounts receivable. The Company had no borrowings outstanding under this facility as of December 31, 2017 . The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. As of December 31, 2017 , the Company was in compliance with these covenants. This facility is subject to an effective interest rate equal to TIBOR plus 0.75% . At December 31, 2017, the trailing 12-month average interest rate applicable to the Company's outstanding loans under the Japan ABL Facility was subject to an effective interest rate of 0.78% . In January 2018, the Company renewed the two asset-based loans with the Bank of Tokyo-Mitsubishi UFJ, combining them into one revolving credit facility. The new agreement provides a credit facility of up to 4 billion Yen (or $36,776,000 , using the exchange rate in effect as of January 31, 2018) over a three -year term, subject to borrowing base availability under the facility. The amounts are secured by certain assets, including eligible inventory and accounts receivable. The facility also includes certain restrictions, including covenants related to certain pledged assets and financial performance metrics. This facility is subject to an effective interest rate equal to TIBOR plus 0.80% . Equipment Note In December 2017, the Company entered into a long-term financing agreement (the "Equipment Note") secured by certain equipment at the Company's golf ball manufacturing facility. As of December 31, 2017 , the Company had $11,815,000 outstanding under this agreement, of which $2,367,000 is due within the next 12 months and $9,448,000 is due over the balance of the term. The Company's interest rate applicable to outstanding borrowings was 3.79% . At December 31, 2017 , interest expense was nominal. The Equipment Note is subject to compliance with a fixed charge coverage ratio covenant of 1.25 during each fiscal quarter in which the Company has outstanding borrowings, and a fixed charge coverage ratio of 1.0 during periods in which no borrowings are outstanding. As of December 31, 2017 , the Company was in compliance with these covenants. Convertible Senior Notes In 2012, the Company issued $112,500,000 of 3.75% Convertible Senior Notes (the “convertible notes”). The convertible notes were convertible, at the option of the note holder, at any time on or prior to the close of business on the business day immediately preceding August 15, 2019 , into shares of common stock at an initial conversion rate of 133.3333 shares per $1,000 principal amount of convertible notes, which is equal to an aggregate of 15,000,000 shares of common stock at a conversion price of approximately $7.50 per share, subject to customary anti-dilution adjustments. In connection with these convertible notes, the Company incurred transactional fees of $3,537,000 . During the second half of 2015, the convertible notes were retired pursuant to certain exchange transactions and shareholder conversions, which resulted, among other things, in the issuance of approximately 15,000,000 shares of common stock to the note holders. In connection with the retirement of the convertible notes, the Company recorded $108,955,000 in shareholders' equity as of December 31, 2015, net of the outstanding discount of $3,395,000 . There were no convertible notes outstanding as of December 31, 2017 and 2016 . In connection with the retirement of the convertible notes in 2015, the Company accelerated the amortization of transaction fees during the second half of 2015. There were no transaction fees remaining to be amortized at December 31, 2017 or 2016 . Total interest and amortization expense recognized during the year ended December 31, 2015 was $3,158,000 .

Earnings per Common Share

Earnings per Common Share	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Earnings per Common Share	Note 5. Earnings per Common Share Basic earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted earnings per common share takes into account the potential dilution that could occur if securities, or other contracts to issue common stock, were exercised. Dilutive securities are included in the calculation of diluted earnings per common share using the treasury stock method in accordance with ASC Topic 260, “Earnings per Share.” Dilutive securities include options granted pursuant to the Company’s stock option plans and outstanding restricted stock units and performance share units granted to employees and non-employee directors (see Note 13 ). Weighted-average common shares outstanding—diluted is the same as weighted-average common shares outstanding—basic in periods when a net loss is reported or in periods when anti-dilution occurs. The following table summarizes the computation of basic and diluted earnings per share: Years Ended December 31, 2017 2016 (1) 2015 (In thousands, except per share data) Earnings per common share—basic Net income attributable to Callaway Golf Company $ 40,806 $ 189,900 $ 14,568 Weighted-average common shares outstanding—basic 94,329 94,045 83,116 Basic earnings per common share $ 0.43 $ 2.02 $ 0.18 Earnings per common share—diluted Net income attributable to Callaway Golf Company $ 40,806 $ 189,900 $ 14,568 Weighted-average common shares outstanding—basic 94,329 94,045 83,116 Options and restricted stock 2,248 1,800 1,495 Weighted-average common shares outstanding—diluted 96,577 95,845 84,611 Diluted earnings per common share (1) $ 0.42 $ 1.98 $ 0.17 (1) During the fourth quarter of 2016, the Company reversed a significant portion of the valuation allowance on its U.S. deferred tax assets. This resulted in a favorable impact to net income of $156,600,000 ( $1.63 per share), partially offset by $15,974,000 ( $0.16 per share) as the result of the recognition of income taxes that were retroactive for all of 2016 on the Company's U.S. business (see Note 10 ). In addition, net income for 2016 includes a $17,662,000 ( $0.18 per share) pre-tax gain from the sale of approximately 10.0% of the Company's investment in Topgolf (see Note 7 ). Earnings per share—diluted, reflects the potential dilution that could occur if convertible securities, or other contracts to issue common stock, were exercised or converted into common stock. Options with an exercise price in excess of the average market value of the Company's common stock during the period have been excluded from the calculation as their effect would be antidilutive. Antidilutive securities excluded from the earnings per share computation are summarized as follows: • For the year ended December 31, 2017, securities outstanding totaling approximately 129,000 , comprised of anti-dilutive options. • For the year ended December 31, 2016, securities outstanding totaling approximately 313,000 , compromised of anti-dilutive options. • For the year ended December 31, 2015, securities outstanding totaling approximately 10,812,000 , including common shares underlying convertible senior notes of 10,248,000 , in addition to anti-dilutive options.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Note 6. Goodwill and Intangible Assets Goodwill at December 31, 2017 increased to $56,429,000 from $25,593,000 at December 31, 2016 . The Company recorded additions to goodwill of $5,885,000 and $23,640,000 as a result of the acquisitions of OGIO completed in January 2017 and TravisMathew completed in August 2017, respectively. Goodwill also increased $1,311,000 due to foreign currency fluctuations. The Company's goodwill is reported within the Golf Clubs and Gear, Accessories and Other operating segments (see Note 17). In accordance with ASC Topic 350, “Intangibles—Goodwill and Other,” the Company’s goodwill and certain intangible assets are not amortized, but are subject to an annual impairment test. The following sets forth the intangible assets by major asset class: Useful Life (Years) December 31, 2017 December 31, 2016 Gross Accumulated Amortization Net Book Value Gross Accumulated Net Book (In thousands) (In thousands) Indefinite-lived: Trade name, trademark and trade dress and other NA $ 218,364 $ — $ 218,364 $ 88,590 $ — $ 88,590 Amortizing: Patents 2-16 31,581 31,491 90 31,581 31,440 141 Developed technology and other 1-9 15,780 8,476 7,304 7,981 7,981 — Total intangible assets $ 265,725 $ 39,967 $ 225,758 $ 128,152 $ 39,421 $ 88,731 The increase in intangible assets is related to the acquisition of non-amortizing trademarks, trade names and goodwill in addition to amortizing intangibles in connection with the OGIO and TravisMathew acquisitions. Aggregate amortization expense on intangible assets was approximately $546,000 , $71,000 and $51,000 for the years ended December 31, 2017 , 2016 and 2015 , respectively. Amortization expense related to intangible assets at December 31, 2017 in each of the next five fiscal years and beyond is expected to be incurred as follows (in thousands): 2018 $ 1,066 2019 1,053 2020 966 2021 910 2022 734 Thereafter 2,665 $ 7,394

Investments

Investments	12 Months Ended
	Dec. 31, 2017
Investments, All Other Investments [Abstract]
Investments	Note 7. Investments Investment in Topgolf International, Inc. The Company owns a minority interest in Topgolf International, Inc., doing business as the Topgolf Entertainment Group (“Topgolf”), the owner and operator of Topgolf entertainment centers, which ownership consists of common stock and various classes of preferred stock. In connection with this investment, the Company has a preferred partner agreement with Topgolf in which the Company has preferred signage rights, rights as the preferred supplier of golf products used or offered for use at Topgolf facilities at prices no less than those paid by the Company’s customers, preferred retail positioning in the Topgolf retail stores, access to consumer information obtained by Topgolf, and other rights incidental to those listed above. The Company invested $21,499,000 , $1,448,000 and $940,000 in shares of Topgolf in 2017 , 2016 and 2015 , respectively. In December, 2017, Topgolf announced that it had completed a private placement led by Fidelity Management and Research Company (the "Fidelity Investment"), in which the Company invested $20,000,000 in preferred shares of Topgolf. Due to the nature and timing of this transaction, the Company believes the carrying value of its series F preferred shares that were purchased in this private placement, approximates fair value as of December 31, 2017. The Company is unable to estimate the fair value of its other series of preferred stock or common stock due to the dissimilar nature of conversion rights, liquidation features and other preferred terms of these shares relative to the series F preferred shares. Further, it would not be practicable for the Company to determine the discount, if any, that would be applicable to any preferred terms, as well as any other rights provided to the holders of the various series of preferred stock, nor a premium, if any, for the incremental value that might apply in the case of a change in control transaction (e.g. an initial public offering or sale of Topgolf). The Company’s Topgolf shares are illiquid and there is no assurance that all classes of Topgolf shares would receive equivalent value upon a sale or other liquidation. Due to these factors, the Company believes that it is not practicable on a cost-benefit basis to estimate the fair value of its Topgolf shares. In February 2016, Topgolf announced that Providence Equity Partners L.L.C. (“Providence Equity”) made a significant minority preferred stock investment in Topgolf (the “Providence Equity Investment”). As required by the terms of the Providence Equity Investment, Topgolf used a portion of the proceeds it received to repurchase shares from its existing shareholders, other than Providence Equity (the “Topgolf Repurchase Program”). In April 2016, the Company sold approximately 10.0% or $5,767,000 (on a cost basis) of its preferred shares in Topgolf under the Topgolf Repurchase Program for $23,429,000 , and recognized a gain of approximately $17,662,000 in other income (expense) during the second quarter. In December 2015, the Company and Topgolf entered into a shareholder loan agreement, which resulted in a note receivable from Topgolf for $3,200,000 . The loan was subject to an annual interest rate of 10% , and was due and payable on March 30, 2016. The loan was paid in full in February 2016. As of December 31, 2017 and 2016 , the Company's total investment in Topgolf was $70,495,000 and $48,997,000 , respectively. The Company's ownership percentage at December 31, 2017 was approximately 14.0% . As of December 31, 2017 , there were no impairment indicators present with respect to this investment. Based on prior observable market transactions, the Company believes that the fair value of its investment in Topgolf significantly exceeds its cost. In accordance with ASU No. 2016-01, "Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities," if there are any observable price changes related to this investment or a similar investment of the same issuer, in fiscal years beginning after December 15, 2017, the Company would be required to assess the fair value impact, if any, on each class of stock, and write the individual security interest up or down to its estimated fair value, which could have a significant effect on the Company's financial position and results of operations. For further discussion, see “Recent Accounting Standards” in Note 2. The Company’s total ownership interest in Topgolf, including the Company's voting rights in the preferred shares of Topgolf, remains at less than 20.0% of the outstanding equity securities of Topgolf. Therefore, the Company does not have the ability to significantly influence the operating and financing activities and policies of Topgolf. Accordingly, this investment is accounted for at cost as of December 31, 2017 .

Joint Venture

Joint Venture	12 Months Ended
	Dec. 31, 2017
Noncontrolling Interest [Abstract]
Joint Venture	Note 8. Joint Venture Effective July 1, 2016, the Company completed the previously announced joint venture with its long-time apparel licensee, TSI Groove & Sports Co, Ltd., ("TSI"), a premier apparel manufacturer in Japan. The new venture is named Callaway Apparel K.K. and includes the design, manufacture and distribution of Callaway-branded apparel, footwear and headwear in Japan. The Company contributed $10,556,000 , primarily in cash, for a 52% ownership of the joint venture, and TSI contributed $9,744,000 , primarily in inventory, for the remaining 48% . The Company has a majority voting percentage on matters pertaining to the business operations and significant management decisions of the joint venture, and as such, the Company is required to consolidate the financial results of the joint venture with the financial results of the Company. The joint venture was consolidated one month in arrears. As a result of the consolidation, during the years ended December 31, 2017 and 2016, the Company recorded net income attributable to the non-controlling interest of $861,000 and $1,054,000 , respectively. During the year ended December 31, 2017 , the joint venture paid a dividend of $974,000 to TSI, which was recorded as a reduction in non-controlling interests in the consolidated condensed financial statements as of December 31, 2017 . Total non-controlling interests on the Company's consolidated balance sheet and consolidated statement of shareholders' equity was $9,744,000 and $9,694,000 at December 31, 2017 and 2016 , respectively.

Selected Financial Statement In

Selected Financial Statement Information	12 Months Ended
	Dec. 31, 2017
Disclosure Selected Financial Statement Information [Abstract]
Selected Financial Statement Information	Note 9. Selected Financial Statement Information December 31, 2017 2016 (In thousands) Accounts receivable, net: Trade accounts receivable $ 114,642 $ 142,932 Allowance for sales returns (15,470 ) (9,341 ) Allowance for doubtful accounts (4,447 ) (5,728 ) $ 94,725 $ 127,863 Inventories: Raw materials $ 67,785 $ 46,451 Work-in-process 868 739 Finished goods 193,833 142,210 $ 262,486 $ 189,400 Property, plant and equipment, net: Land $ 7,322 $ 7,251 Buildings and improvements 71,692 67,945 Machinery and equipment 98,116 110,799 Furniture, computers and equipment 108,706 102,421 Production molds 19,604 19,843 Construction-in-process 10,665 4,724 316,105 312,983 Accumulated depreciation (245,878 ) (258,508 ) $ 70,227 $ 54,475 Accounts payable and accrued expenses: Accounts payable $ 63,204 $ 54,574 Accrued expenses 87,925 57,478 Accrued goods in-transit 24,998 20,469 $ 176,127 $ 132,521 Accrued employee compensation and benefits: Accrued payroll and taxes $ 29,363 $ 23,133 Accrued vacation and sick pay 9,781 8,722 Accrued commissions 1,029 713 $ 40,173 $ 32,568

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 10. Income Taxes The Company’s income before income tax provision was subject to taxes in the following jurisdictions for the following periods (in thousands): Years Ended December 31, 2017 2016 (1) 2015 United States $ 50,706 $ 38,268 $ 6,864 Foreign 17,349 20,125 13,199 $ 68,055 $ 58,393 $ 20,063 The expense (benefit) for income taxes is comprised of (in thousands): Years Ended December 31, 2017 2016 (2) 2015 Current tax provision: Federal $ 610 $ 541 $ 271 State 1,259 543 431 Foreign 6,135 7,289 4,393 8,004 8,373 5,095 Deferred tax expense (benefit): Federal 20,746 (129,405 ) (41 ) State (1,127 ) (10,693 ) 113 Foreign (1,235 ) (836 ) 328 18,384 (140,934 ) 400 Income tax provision $ 26,388 $ (132,561 ) $ 5,495 (1) Income before income taxes in 2016 includes a gain of $17,662,000 that was recognized in connection with the sale of preferred shares of the Company's investment in Topgolf. See Note 7 for further discussion. (2) The income tax benefit for 2016 includes the reversal of a significant portion of the valuation allowance on the Company's deferred tax assets in the U.S. See further discussion below. On December 22, 2017, the Tax Act was enacted into legislation, which includes a broad range of provisions affecting businesses. The Tax Act significantly revises how companies compute their U.S corporate tax liability by, among other provisions, reducing the corporate tax rate from 35% to 21% for tax years beginning after December 31, 2017, implementing a territorial tax system, and requiring a mandatory one-time tax on U.S. owned undistributed foreign earnings and profits known as the toll charge or transition tax. Pursuant to the SEC Staff Accounting Bulletin ("SAB") No. 118, "Income Tax Accounting Implications of the Tax Cuts and Jobs Act" ("SAB 118"), a company may select among one of three scenarios to reflect the impact of the Tax Act in its financial statements within a measurement period. Those scenarios are (i) a final estimate which effectively closes the measurement period; (ii) a reasonable estimate leaving the measurement period open for future revisions; and (iii) no estimate as the law is still being analyzed in which case a company continues to apply its accounting on the basis of the provisions of the tax laws that were in effect immediately before the enactment of the Tax Act. SAB 118 allows for the reporting provisional of amounts for certain income tax effects in scenarios (ii) and (iii). The measurement period begins in the reporting period that includes the Tax Act’s enactment date and ends when an entity has obtained, prepared, and analyzed the information that was needed in order to complete the accounting requirements under ASC Topic 740. The Company was able to provide a reasonable estimate for the revaluation of deferred taxes and the effects of the toll charge on undistributed foreign earnings and profits, with the Company's measurement period open for future revisions. As such, the Company recorded a provisional tax expense in the amount of $11,174,000 related to the revaluation of deferred taxes, and a provisional tax benefit in the amount of $3,638,000 for the toll charge on the deemed repatriation on earnings and profits of U.S.-owned foreign subsidiaries, which generated foreign tax credits in excess of the tax expense recognized on the deemed repatriation. The Company is still evaluating various provisions included in the Tax Act and has therefore not provided a final estimate. These provisions include, but are not limited to, the global intangible low-taxed income (GILTI) provisions, the foreign derived intangible income (FDII) provisions, and the changes to the deductibility of interest. These provisions will be effective for the Company beginning on January 1, 2018, and may materially impact the Company’s effective tax rate in future years. Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2017 and 2016 are as follows (in thousands): December 31, 2017 2016 Deferred tax assets: Reserves and allowances not currently deductible for tax purposes $ 12,783 $ 15,506 Basis difference related to fixed assets 5,946 9,697 Compensation and benefits 7,807 9,273 Basis difference for inventory valuation 1,612 2,100 Compensatory stock options and rights 3,869 5,715 Deferred revenue and other 175 226 Operating loss carryforwards 21,799 75,110 Tax credit carryforwards 62,668 32,730 Basis difference related to intangible assets with a definite life 7,061 13,993 Other 634 389 Total deferred tax assets 124,354 164,739 Valuation allowance for deferred tax assets (11,114 ) (16,515 ) Deferred tax assets, net of valuation allowance $ 113,240 $ 148,224 Deferred tax liabilities: Prepaid expenses (773 ) (1,082 ) Basis difference related to intangible assets with an indefinite life (22,891 ) (34,031 ) Total deferred tax liabilities (23,664 ) (35,113 ) Net deferred tax assets $ 89,576 $ 113,111 Net deferred tax assets (liabilities) are shown on the accompanying consolidated balance sheets as follows: Non-current deferred tax assets $ 91,398 $ 114,707 Non-current deferred tax liabilities (1,822 ) (1,596 ) Net deferred tax assets $ 89,576 $ 113,111 The net change in net deferred taxes in 2017 of $23,535,000 is comprised of the utilization of net operating losses through profitable operations and the revaluation of the deferred tax assets as a result of the Tax Act. Pursuant to the Tax Act, the Company revalued its gross deferred tax assets from 35% to 21% consistent with the corporate tax rate effective January 1, 2018. The provisional net tax impact of this revaluation was a reduction in net deferred tax assets of $11,174,000 . Deferred tax assets and liabilities result from temporary differences between the financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that are anticipated to be in effect at the time the differences are expected to reverse. The realization of the deferred tax assets, including loss and credit carry forwards, is subject to the Company generating sufficient taxable income during the periods in which the temporary differences become realizable. In accordance with the applicable accounting rules, the Company maintains a valuation allowance for a deferred tax asset when it is deemed to be more likely than not that some or all of the deferred tax assets will not be realized. In evaluating whether a valuation allowance is required under such rules, the Company considers all available positive and negative evidence, including prior operating results, the nature and reason for any losses, its forecast of future taxable income, and the dates on which any deferred tax assets are expected to expire. These assumptions require a significant amount of judgment, including estimates of future taxable income. These estimates are based on the Company’s best judgment at the time made based on current and projected circumstances and conditions. In 2011, the Company established a valuation allowance against its U.S. deferred tax assets. During the fourth quarter of 2016, the Company evaluated all available positive and negative evidence, including the Company's improved profitability in 2015 and 2016, combined with future projections of profitability. As a result, the Company determined that the majority of its U.S. deferred tax assets were more likely than not to be realized and reversed a significant portion of the valuation allowance against those deferred tax assets accordingly. The remaining valuation allowance on the Company's U.S. deferred tax assets as of December 31, 2017 and 2016 relate primarily to state net operating loss carryforwards and credits the Company estimates it may not be able to utilize in future periods. With respect to non-U.S. entities, there continues to be sufficient positive evidence to conclude that realization of its deferred tax assets is more likely than not under applicable accounting rules, and no significant allowances have been established. At December 31, 2017 , the Company had federal and state income tax credit carryforwards of $56,285,000 and $15,499,000 , respectively, which will expire at various dates beginning in 2021 . Such credit carryforwards expire as follows (in thousands): U.S. foreign tax credit $ 46,639 2021 - 2037 U.S. research tax credit $ 9,623 2031 - 2037 U.S. business tax credits $ 23 2031 - 2037 State investment tax credits $ 858 Do not expire State research tax credits $ 14,641 Do not expire The Company has recorded a deferred tax asset reflecting the benefit of operating loss carryforwards. The net operating losses expire as follows (in thousands): U.S. loss carryforwards $ 63,493 2032 - 2035 State loss carryforwards $ 124,466 2018 - 2037 The Company’s ability to utilize the losses and credits to offset future taxable income may be deferred or limited significantly if the Company were to experience an “ownership change” as defined in section 382 of the Internal Revenue Code of 1986, as amended (the “Code”). In general, an ownership change will occur if there is a cumulative change in ownership of the Company’s stock by “5-percent shareholders” (as defined in the Code) that exceeds 50 percentage points over a rolling three-year period. The Company determined that no ownership change has occurred for purposes of Section 382 for the period ended December 31, 2017 . A reconciliation of the effective tax rate on income or loss and the statutory tax rate is as follows: Years Ended December 31, 2017 2016 2015 Statutory U.S. tax rate 35.0 % 35.0 % 35.0 % State income taxes, net of U.S. tax benefit 2.6 % 3.1 % 3.5 % Federal and State tax credits, net of U.S. tax benefit (4.1 )% (5.0 )% (11.5 )% Foreign income taxed at other than U.S. statutory rate (0.2 )% 1.8 % (2.4 )% Effect of foreign rate changes 0.2 % 0.5 % 0.9 % Foreign tax credit (1.3 )% (11.3 )% (12.0 )% Basis differences of intangibles with an indefinite life 0.1 % 0.1 % 0.1 % Change in deferred tax valuation allowance (1.9 )% (262.4 )% 0.3 % Accrual for interest and income taxes related to uncertain tax positions 2.2 % 2.9 % (0.3 )% Income (loss) from flowthrough entities 1.0 % (0.2 )% (2.0 )% Meals and entertainment 1.1 % 1.5 % 3.4 % Group loss relief (0.6 )% (1.6 )% (3.7 )% Stock option compensation (2.0 )% 0.2 % (1.9 )% Foreign dividends and earnings inclusion 0.7 % 9.9 % 7.1 % Foreign tax withholding 0.9 % 0.6 % 1.4 % Executive compensation limitation 0.5 % 0.7 % 4.3 % Intra-entity asset transfers (6.3 )% — % — % Enactment of the Tax Cuts and Jobs Act 11.1 % — % — % Other (0.2 )% (2.8 )% 5.2 % Effective tax rate 38.8 % (227.0 )% 27.4 % A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): 2017 2016 2015 Balance at January 1 $ 8,256 $ 7,090 $ 6,559 Additions based on tax positions related to the current year 1,061 969 1,120 Additions for tax positions of prior years 233 542 132 Reductions for tax positions of prior years (192 ) (80 ) (255 ) Settlement of tax audits (33 ) — — Reductions due to lapsed statute of limitations (25 ) (265 ) (466 ) Balance at December 31 $ 9,300 $ 8,256 $ 7,090 As of December 31, 2017 , the gross liability for income taxes associated with uncertain tax benefits was $9,300,000 . This liability could be reduced by $1,360,000 of offsetting tax benefits associated with the correlative effects of potential transfer pricing adjustments, which was recorded as a long-term income tax receivable, as well as $6,317,000 of deferred taxes. The net amount of $1,623,000 , if recognized, would affect the Company’s financial statements and favorably affect the Company’s effective income tax rate. The Company does not expect changes to the unrecognized tax benefits in the next 12 months to have a material impact on its results of operations or its financial position. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. The Company recognized a tax expense of approximately $301,000 and $258,000 for the years ended December 31, 2017 and 2016 , respectively, and tax benefits of approximately $2,000 for the year ended December 31, 2015, related to interest and penalties in the provision for income taxes. As of December 31, 2017 and 2016 , the gross amount of accrued interest and penalties included in income taxes payable in the accompanying consolidated balance sheets was $1,618,000 and $1,317,000 , respectively. The Company or one of its subsidiaries files income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. The Company is generally no longer subject to income tax examinations by tax authorities in its major jurisdictions as follows: Major Tax Jurisdiction Years No Longer Subject to Audit U.S. federal 2010 and prior California (U.S.) 2008 and prior Canada 2009 and prior Japan 2010 and prior South Korea 2011 and prior United Kingdom 2013 and prior As of December 31, 2017 , the Company had $118,700,000 of undistributed foreign earnings and profits. Pursuant to the Tax Act, the Company’s undistributed foreign earnings and profits were deemed repatriated as of December 31, 2017. As a result, the Company utilized $72,800,000 of net operating losses, which decreased deferred tax assets by approximately $25,500,000 and generated foreign tax credits of $29,100,000 , which increased deferred tax assets by $29,100,000 and resulted in a net tax benefit of $3,600,000 or a 5.2% benefit to the tax rate. The Company has not provided deferred tax liabilities for foreign withholding taxes and certain state income taxes on the undistributed earnings and profits from certain non-U.S. subsidiaries that will be permanently reinvested outside the United States. Upon the distribution of foreign earnings and profits, certain foreign countries impose withholding taxes, subject to certain limitations, for use as credits against the Company’s U.S. tax liability, if any. If the foreign earnings and profits were distributed, the Company would need to accrue an additional income tax liability. However, the Company may also be allowed a credit against substantially all the Company’s U.S. tax liability for the taxes paid in foreign jurisdictions. The Company expects the net impact on the Company’s U.S. tax liability to be insignificant.

Commitments & Contingencies

Commitments & Contingencies	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments & Contingencies	Note 11. Commitments & Contingencies Legal Matters The Company is subject to routine legal claims, proceedings and investigations incident to its business activities, including claims, proceedings, and investigations relating to commercial disputes and employment matters. The Company also receives from time to time information claiming that products sold by the Company infringe or may infringe patent, trademark or other intellectual property rights of third parties. One or more such claims of potential infringement could lead to litigation, the need to obtain licenses, the need to alter a product to avoid infringement, a settlement or judgment or some other action or material loss by the Company, which also could adversely affect the Company’s overall ability to protect its product designs and ultimately limit its future success in the marketplace. In addition, the Company is occasionally subject to non-routine claims, proceedings or investigations. The Company regularly assesses such matters to determine the degree of probability that the Company will incur a material loss as a result of such matters as well as the range of possible loss. An estimated loss contingency is accrued in the Company’s financial statements if it is probable the Company will incur a loss and the amount of the loss can be reasonably estimated. The Company reviews all claims, proceedings and investigations at least quarterly and establishes or adjusts any accruals for such matters to reflect the impact of negotiations, settlements, advice of legal counsel and other information and events pertaining to a particular matter. All legal costs associated with such matters are expensed as incurred. Historically, the claims, proceedings and investigations brought against the Company, individually and in the aggregate, have not had a material adverse effect on the consolidated results of operations, cash flows or financial position of the Company. The Company believes that it has valid legal defenses to the matters currently pending against the Company. These matters are inherently unpredictable and the resolutions of these matters are subject to many uncertainties and the outcomes are not predictable with assurance. Consequently, management is unable to estimate the ultimate aggregate amount of monetary loss, amounts covered by insurance or the financial impact that will result from such matters. In addition, the Company cannot assure that it will be able to successfully defend itself in those matters or that any amounts accrued are sufficient. The Company does not believe that the matters currently pending against the Company will have a material adverse effect on the Company's consolidated business, financial condition, cash flows or results of operations on an annual basis. Lease Commitments The Company leases certain warehouse, distribution and office facilities, vehicles and office equipment under operating leases, and certain office equipment under capital leases. Lease terms range from one to ten years expiring at various dates through December 2025, with options to renew operating leases at varying terms. Commitments for minimum lease payments under non-cancelable operating and capital leases as of December 31, 2017 are as follows (in thousands): Operating Leases Capital Leases 2018 $ 8,538 $ 230 2019 8,437 71 2020 7,409 14 2021 6,458 7 2022 6,220 4 Thereafter 17,206 — $ 54,268 $ 326 Rent expense for the Company’s operating lease commitments for the years ended December 31, 2017 , 2016 and 2015 was $16,382,000 , $13,516,000 and $13,245,000 , respectively. At December 31, 2017 , the minimum rental payments under capital leases totaled $326,000 . Minimum rental payments under operating leases with initial or remaining terms of one year or more totaled $54,268,000 , net of sublease receipts of $690,000 at December 31, 2017 . Unconditional Purchase Obligations During the normal course of its business, the Company enters into agreements to purchase goods and services, including purchase commitments for production materials, endorsement agreements with professional golfers and other endorsers, employment and consulting agreements, and intellectual property licensing agreements pursuant to which the Company is required to pay royalty fees. It is not possible to determine the amounts the Company will ultimately be required to pay under these agreements as they are subject to many variables including performance-based bonuses, severance arrangements, the Company’s sales levels, and reductions in payment obligations if designated minimum performance criteria are not achieved. As of December 31, 2017 , the Company has entered into many of these contractual agreements with terms ranging from one to five years . The aggregate minimum obligations that the Company is required to pay under these agreements is $72,459,000 over the next five years. In addition, the Company also enters into unconditional purchase obligations with various vendors and suppliers of goods and services in the normal course of operations through purchase orders or other documentation or that are undocumented except for an invoice. Such unconditional purchase obligations are generally outstanding for periods less than a year and are settled by cash payments upon delivery of goods and services and are not reflected in this total. Future purchase commitments as of December 31, 2017 , are as follows (in thousands): 2018 $ 39,338 2019 18,841 2020 8,519 2021 4,093 2022 1,668 $ 72,459 Other Contingent Contractual Obligations During its normal course of business, the Company has made certain indemnities, commitments and guarantees under which it may be required to make payments in relation to certain transactions. These include (i) intellectual property indemnities to the Company’s customers and licensees in connection with the use, sale and/or license of Company product or trademarks, (ii) indemnities to various lessors in connection with facility leases for certain claims arising from such facilities or leases, (iii) indemnities to vendors and service providers pertaining to the goods and services provided to the Company or based on the negligence or willful misconduct of the Company and (iv) indemnities involving the accuracy of representations and warranties in certain contracts. In addition, the Company has consulting agreements that provide for payment of nominal fees upon the issuance of patents and/or the commercialization of research results. The Company has also issued guarantees in the form of standby letters of credit of $887,000 as of December 31, 2017 . The duration of these indemnities, commitments and guarantees varies, and in certain cases, may be indefinite. The majority of these indemnities, commitments and guarantees do not provide for any limitation on the maximum amount of future payments the Company could be obligated to make. Historically, costs incurred to settle claims related to indemnities have not been material to the Company’s financial position, results of operations or cash flows. In addition, the Company believes the likelihood is remote that payments under the commitments and guarantees described above will have a material effect on the Company’s financial condition. The fair value of indemnities, commitments and guarantees that the Company issued during and as of the year ended December 31, 2017 was not material to the Company’s financial position, results of operations or cash flows. Employment Contracts In addition, the Company has made contractual commitments to each of its officers and certain other employees providing for severance payments, including salary continuation, upon the termination of employment by the Company without substantial cause or by the officer for good reason or non-renewal. In addition, in order to assure that the officers would continue to provide independent leadership consistent with the Company’s best interest, the contracts also generally provide for certain protections in the event of a change in control of the Company. These protections include the payment of certain severance benefits, such as salary continuation, upon the termination of employment following a change in control.

Capital Stock

Capital Stock	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Capital Stock	Note 12. Capital Stock Common Stock and Preferred Stock As of December 31, 2017 , the Company has an authorized capital of 243,000,000 shares, $0.01 par value, of which 240,000,000 shares are designated common stock, and 3,000,000 shares are designated preferred stock. Of the preferred stock, 240,000 shares are designated Series A Junior Participating Preferred Stock and the remaining shares of preferred stock are undesignated as to series, rights, preferences, privileges or restrictions. The holders of common stock are entitled to one vote for each share of common stock on all matters submitted to a vote of the Company’s shareholders. Although to date no shares of Series A Junior Participating preferred stock have been issued, if such shares were issued, each share of Series A Junior Participating Preferred Stock would entitle the holder thereof to 1,000 votes on all matters submitted to a vote of the shareholders of the Company . The holders of Series A Junior Participating Preferred Stock and the holders of common stock shall generally vote together as one class on all matters submitted to a vote of the Company’s shareholders. Shareholders entitled to vote for the election of directors are entitled to vote cumulatively for one or more nominees. Treasury Stock and Stock Repurchases In August 2014, the Company's Board of Directors authorized a $50,000,000 share repurchase program under which the Company is authorized to repurchase shares of its common stock in the open market or in private transactions, subject to the Company’s assessment of market conditions and buying opportunities. The repurchases are made consistent with the terms of the Company's credit facility which defines the amount of stock that can be repurchased. The repurchase program will remain in effect until completed or until terminated by the Board of Directors. During 2017 , the Company repurchased approximately 1,536,000 shares of its common stock under the 2014 repurchase program at an average cost per share of $10.82 , for a total cost of $16,617,000 . Included in these amounts are $6,617,000 of shares the Company withheld to satisfy the Company's tax withholding obligations in connection with the vesting and settlement of employee restricted stock unit awards. The Company’s repurchases of shares of common stock are recorded at cost and result in a reduction of shareholders’ equity. As of December 31, 2017 , the total amount remaining under the repurchase authorization was $25,266,000 .

Share-Based Employee Compensati

Share-Based Employee Compensation	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Employee Compensation	Note 13. Share-Based Employee Compensation The Company accounts for its share-based compensation arrangements in accordance with ASC Topic 718, which requires the measurement and recognition of compensation expense for all share-based payment awards to employees and directors based on estimated fair values. ASC Topic 718 further requires a reduction in share-based compensation expense by an estimated forfeiture rate. The forfeiture rate used by the Company is based on historical forfeiture trends. If actual forfeiture rates are not consistent with the Company’s estimates, the Company may be required to increase or decrease compensation expenses in future periods. On January 1, 2017 the Company adopted ASU 2016-09. As a result, all tax effects related to employee share based compensation are reflected as a component of continuing operations. The previous “APIC Pool” method under ASC Topic 718 is no longer applicable to the Company. For further discussion see Note 2. Stock Plans As of December 31, 2017 , the Company had two shareholder approved stock plans under which shares were available for equity-based awards: the Callaway Golf Company Amended and Restated 2004 Incentive Plan (the "2004 Incentive Plan") and the 2013 Non-Employee Directors Stock Incentive Plan (the "2013 Directors Plan"). The 2004 Incentive Plan permits the granting of stock options, stock appreciation rights, restricted stock awards, restricted stock units, performance share units and other equity-based awards to the Company’s officers, employees, consultants and certain other non-employees who provide services to the Company. All grants under the 2004 Incentive Plan are discretionary, although no participant may receive awards in any one year in excess of 2,000,000 shares. The maximum number of shares issuable over the term of the 2004 Incentive Plan is 33,000,000 . The 2013 Directors Plan permits the granting of stock options, restricted stock awards and restricted stock units to eligible directors serving on the Company's Board of Directors. The Directors may receive a one-time grant upon their initial appointment to the Board and thereafter an annual grant upon being re-elected at each annual meeting of shareholders, not to exceed 50,000 shares within any calendar year. The maximum number of shares issuable over the term of the 2013 Directors Plan is 1,000,000 . The following table presents shares authorized, available for future grant and outstanding under each of the Company’s plans as of December 31, 2017 : Authorized Available Outstanding (1) (In thousands) 2004 Incentive Plan 33,000 10,875 3,635 2013 Directors Plan 1,000 747 60 Total 34,000 11,622 3,695 (1) Includes 6,000 shares of accrued incremental dividend equivalent rights on outstanding shares underlying restricted stock units granted under the 2004 Incentive Plan and 2013 Directors Plan. Stock Options All stock option grants made under the 2004 Incentive Plan are made at exercise prices no less than the Company’s closing stock price on the date of grant. Outstanding stock options generally vest over a three -year period from the grant date and generally expire up to 10 years after the grant date. The Company recorded $34,000 , $146,000 and $1,396,000 of compensation expense relating to outstanding stock options for the years ended December 31, 2017 , 2016 and 2015 , respectively. The Company records compensation expense for employee stock options based on the estimated fair value of the options on the date of grant using the Black-Scholes option-pricing model. The model uses various assumptions, including a risk-free interest rate, the expected term of the options, the expected stock price volatility, and the expected dividend yield. Compensation expense for employee stock options is recognized over the vesting term and is reduced by an estimate for forfeitures, which is based on the Company’s historical forfeitures of unvested options and awards. The Company did not grant stock options during the years ended December 31, 2017 , 2016 and 2015 . For the years ended December 31, 2017 , 2016 and 2015 , the weighted average estimated forfeiture rate used was 1.7% , 3.7% , and 6.2% , respectively. The Company uses forecasted dividends to estimate the expected dividend yield. The expected volatility is based on the historical volatility of the Company’s stock. The risk-free interest rate is based on the U.S. Treasury yield curve at the date of grant with maturity dates approximately equal to the expected term of the options at the date of the grant. The expected life of the Company’s options is based on evaluations of historical employee exercise behavior, forfeitures, cancellations and other factors. The valuation model applied in this calculation utilizes highly subjective assumptions that could potentially change over time. Changes in the subjective input assumptions can materially affect the fair value estimates of an option. Furthermore, the estimated fair value of an option does not necessarily represent the value that will ultimately be realized by the employee holding the option. The following table summarizes the Company’s stock option activities for the year ended December 31, 2017 (in thousands, except price per share and contractual term): Options Number of Shares Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2017 1,783 $ 7.92 Granted — $ — Exercised (681 ) $ 7.87 Forfeited — $ — Expired (122 ) $ 14.37 Outstanding at December 31, 2017 980 $ 7.15 4.44 $ 6,702 Vested and expected to vest in the future at December 31, 2017 980 $ 7.15 4.44 $ 6,701 Exercisable at December 31, 2017 968 $ 7.15 4.43 $ 6,619 At December 31, 2017 , there was $14,000 of total unrecognized compensation expense related to options granted to employees under the Company’s share-based payment plans. That cost is expected to be recognized over a weighted-average period of 0.4 years . The amount of unrecognized compensation expense noted above does not necessarily represent the amount that will ultimately be realized by the Company in its consolidated statement of operations. The total intrinsic value for options exercised during the years ended December 31, 2017 , 2016 and 2015 was $3,546,000 , $1,005,000 and $2,151,000 , respectively. Cash received from the exercise of stock options for the years ended December 31, 2017 , 2016 and 2015 was $5,362,000 , $2,637,000 and $6,565,000 , respectively. Restricted Stock Units Restricted stock units awarded under the 2004 Incentive Plan and the 2013 Directors Plan are recorded at the Company’s closing stock price on the date of grant. Restricted stock units generally vest over a one - to three -year period. At December 31, 2017 , 2016 and 2015 , the weighted average grant-date fair value of restricted stock units granted was $10.94 , $9.36 and $8.33 , respectively. The Company recorded $5,537,000 , $4,283,000 and $3,539,000 of compensation expense related to restricted stock units in 2017 , 2016 and 2015 , respectively. The table below is a roll-forward of the activity for restricted stock units during the 12 months ended December 31, 2017 (in thousands, except fair value amounts): Restricted Stock Units Units Weighted- Average Grant-Date Fair Value Nonvested at January 1, 2017 1,419 $ 8.81 Granted 680 10.94 Vested (797 ) 8.54 Forfeited (26 ) 9.47 Nonvested at December 31, 2017 1 1,276 $ 10.09 (1) Excludes 6,000 shares of accrued incremental dividend equivalent rights on outstanding shares underlying restricted stock units granted under the 2004 Incentive Plan and 2013 Directors Plan. At December 31, 2017 , there was $8,692,000 of total unrecognized compensation expense related to nonvested restricted stock units granted to employees under the Company’s share-based payment plans. That cost is expected to be recognized over a weighted-average period of 2.4 years . Performance Share Units Performance share units granted under the 2004 Incentive Plan are stock-based awards in which the number of shares ultimately received depends on the Company's performance against specified metrics over a one - to three -year performance period from the date of grant. These performance metrics are established by the Company at the beginning of the performance period. At the end of the performance period, the number of shares of stock that could be issued is fixed based upon the degree of achievement of the performance goals. The number of shares that could be issued can range from 0% to 200% of the participant's target award. Performance share units are initially valued at the Company's closing stock price on the date of grant. Stock compensation expense, net of estimated forfeitures, is recognized on a straight-line basis over the vesting period. The expense recognized over the vesting period is adjusted up or down based on the anticipated performance level during the performance period. If the performance metrics are not probable of achievement during the performance period, compensation expense would be reversed. The awards are forfeited if the threshold performance metrics are not achieved as of the end of the performance period. The performance share units cliff-vest in full three years from the date of grant. The Company granted 462,000 , 420,000 and 510,000 performance share units during the years ended December 31, 2017 , 2016 and 2015 , respectively, at a weighted average grant-date fair value of $10.68 , $8.61 and $7.96 per share, respectively. The awards granted in 2017 and 2016 are subject to a three -year performance period provided that (i) if certain first year performance goals are achieved, the participant could earn up to 50% of the three-year target award shares, subject to continued service through the vesting date, and (ii) if certain cumulative first and second year performance goals are achieved, the participant could earn up to an aggregate of 80% of the three-year target award shares (which includes any shares earned during the first year), subject to continued service through the vesting date. Based on the Company’s performance, participants earned a minimum of 50% of the target award shares granted in 2017 and 80% of the target award shares granted in 2016, subject to continued service through the vesting dates. The awards granted in 2015 were subject to a one -year performance period, subject to continued service through the vesting date. Based on the Company's performance in 2015 the participants earned 130.2% of the target award. During the years ended December 31, 2017 , 2016 and 2015, the Company recognized total compensation expense, net of estimated forfeitures, of $7,075,000 , $4,536,000 and $2,607,000 , respectively, for performance share units. At December 31, 2017 , the unamortized compensation expense related to these awards was $9,083,000 , which is expected to be recognized over a weighted-average period of 1.2 years. The table below is a roll-forward of the activity for performance share units during the 12 months ended December 31, 2017 (in thousands, except fair value amounts): Performance Share Units Units Weighted- Nonvested at January 1, 2017 1 1,579 $ 8.24 Granted 462 10.68 Vested (566 ) 8.30 Forfeited (42 ) 9.45 Nonvested at December 31, 2017 1,433 $ 9.05 (1) Nonvested performance share units as of January 1, 2017, are comprised of 1,306,000 shares at the target award rate adjusted for shares earned by participants at 130.2% and 131.5% for awards granted in 2015 and 2014, respectively. Phantom Stock Units Phantom stock units granted under the 2004 Incentive Plan are a form of share-based awards that are indexed to the Company’s stock and are settled in cash. Because phantom stock units are settled in cash, compensation expense recognized over the vesting period will vary based on changes in fair value. Fair value is remeasured at the end of each interim reporting period based on the closing price of the Company’s common stock. All of the previously granted phantom stock units were fully vested as of December 31, 2015. There were no phantom stock units granted in the years ended December 31, 2017 , 2016 or 2015 . The Company did not recognize expense related to phantom stock units during December 31, 2017 or 2016 , and recognized $390,000 of compensation expense related to previously granted phantom stock units for the year ended December 31, 2015 . All of the previously granted phantom stock units were fully vested and paid out as of June 30, 2015. Stock Appreciation Rights Cash settled stock appreciation rights ("SARs") granted under the 2004 Incentive Plan are valued using the Black-Scholes option-pricing model on the date of grant. SARs are subsequently remeasured at each interim reporting period based on a revised Black-Scholes value until they are exercised. SARs vest over a three -year period. As of December 31, 2016, the outstanding SARs were fully vested. As of December 31, 2017 the Company reversed $32,000 in compensation expense related to these awards and recognized $320,000 and $3,288,000 in compensation expense related to these awards as of December 31, 2016 and 2015, respectively. At December 31, 2017 and 2016 , the Company accrued compensation expense of $0 and $224,000 , respectively, which was included in accrued employee compensation and benefits in the accompanying consolidated balance sheets. The table below is a roll-forward of the activity for SARs during the 12 months ended December 31, 2017 (in thousands): Stock Appreciation Rights Units Weighted- Nonvested and Outstanding at January 1, 2017 50 $ 6.48 Granted — — Exercised (50 ) 6.48 Forfeited — — Outstanding at December 31, 2017 — $ — Share-Based Compensation Expense The table below summarizes the amounts recognized in the financial statements for the years ended December 31, 2017 , 2016 and 2015 for share-based compensation, including expense for stock options, restricted stock units, performance share units, phantom stock units and cash settled stock appreciation rights (in thousands): 2017 2016 2015 Cost of sales $ 907 $ 704 $ 754 Operating expenses 11,708 8,581 10,466 Total cost of employee share-based compensation included in income before income tax $ 12,615 $ 9,285 $ 11,220

Employee Benefit Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2017
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plan	Note 14. Employee Benefit Plan The Company has a voluntary deferred compensation plan under Section 401(k) of the Internal Revenue Code (the “401(k) Plan”) for all employees who satisfy the age and service requirements under the 401(k) Plan. Each participant may elect to contribute up to 75% of annual compensation, up to the maximum permitted under federal law, and the Company is obligated to contribute annually an amount equal to 50% of the participant’s contributions up to 6% of their eligible annual compensation. The portion of the participant’s account attributable to elective deferral contributions and rollover contributions are 100% vested and nonforfeitable. Participants vest in employer contributions at a rate of 50% per year, becoming fully vested after the completion of two years of service. In accordance with the provisions of the 401(k) Plan, the Company matched employee contributions in the amount of $1,927,000 , $1,842,000 and $1,744,000 during 2017 , 2016 and 2015 , respectively.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 15. Fair Value of Financial Instruments Certain of the Company’s financial assets and liabilities are measured at fair value on a recurring and nonrecurring basis. Fair value is defined as the price that would be received to sell an asset or the price paid to transfer a liability (the exit price) in the principal and most advantageous market for the asset or liability in an orderly transaction between market participants. Assets and liabilities carried at fair value are classified using the three-tier hierarchy (see Note 2 ). The following table summarizes the valuation of the Company’s foreign currency forward contracts (see Note 16 ) that are measured at fair value on a recurring basis as of December 31, 2017 and 2016 (in thousands): Fair Value Level 1 Level 2 Level 3 2017 Foreign currency forward contracts —asset position $ 179 $ — $ 179 $ — Foreign currency forward contracts —liability position (239 ) — (239 ) — $ (60 ) $ — $ (60 ) $ — 2016 Foreign currency forward contracts —asset position $ 3,524 $ — $ 3,524 $ — Foreign currency forward contracts —liability position (85 ) — (85 ) — $ 3,439 $ — $ 3,439 $ — The fair value of the Company’s foreign currency forward contracts is based on observable inputs that are corroborated by market data. Observable inputs include broker quotes, daily market foreign currency rates and forward pricing curves. Remeasurement gains and losses on foreign currency forward contracts designated as cash flow hedges are recorded in other comprehensive income, and in other income (expense) for non-designated foreign currency forward contracts (see Note 16 ). Disclosures about the Fair Value of Financial Instruments The carrying values of cash and cash equivalents, trade accounts receivable and trade accounts payable at December 31, 2017 and 2016 are categorized within Level 1 of the fair value hierarchy due to the short-term nature of these balances. The table below illustrates information about fair value relating to the Company’s financial assets and liabilities that are recognized in the accompanying consolidated balance sheets as of December 31, 2017 and 2016 , as well as the fair value of contingent contracts that represent financial instruments (in thousands). December 31, 2017 December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Primary Asset-Based Revolving Credit Facility (2) $ 74,000 $ 74,000 $ — $ — Japan ABL Facility (2) $ 13,755 $ 13,755 $ 11,966 $ 11,966 Equipment Note (3) $ 11,815 $ 11,815 $ — $ — Standby letters of credit (4) $ 887 $ 887 $ 823 $ 823 Money market funds (5) $ — $ — $ 69,081 $ 69,081 (1) The carrying value of amounts outstanding under the Primary Asset-Based Revolving and the Japan ABL credit facilities approximate the fair value due to the short term nature of these obligations. The fair value of this debt is categorized within Level 2 of the fair value hierarchy. See Note 4 for information on the Company's credit facilities, including certain risks and uncertainties related thereto. (2) In December 2017, the Company entered into the Equipment Note secured by certain equipment at the Company's golf ball manufacturing facility. As of December 31, 2017 , the Company had $11,815,000 outstanding under the Equipment Note. The fair value of this debt is categorized within Level 2 of the fair value hierarchy. See Note 4 for further information. (3) The carrying value of the Company's standby letters of credit approximates the fair value as they represent the Company’s contingent obligation to perform in accordance with the underlying contracts. The fair value of this contingent obligation is categorized within Level 2 of the fair value hierarchy. (4) The carrying value of the money market funds approximates fair value as the funds are highly liquid and short-term in nature. The funds seek to maintain a stable net asset value of $1.00 per share, and the market value per share of these funds are available in active markets. As such, they are categorized within Level 1 of the fair value hierarchy. The money market funds accrued dividends, which were reinvested and reflected in the carrying value as of December 31, 2016. There were no money market funds outstanding as of December 30, 2017. Nonrecurring Fair Value Measurements The Company measures certain assets at fair value on a nonrecurring basis at least annually or when certain indicators are present. These assets include long-lived assets, goodwill and non-amortizing intangible assets that are written down to fair value when they are held for sale or determined to be impaired. In each of 2017, 2016 , and 2015 , the Company did not have any significant assets or liabilities that were measured at fair value on a nonrecurring basis in periods subsequent to initial recognition.

Derivatives and Hedging

Derivatives and Hedging	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	Note 16. Derivatives and Hedging In the normal course of business, the Company is exposed to gains and losses resulting from fluctuations in foreign currency exchange rates relating to transactions of its international subsidiaries. As part of its strategy to manage the level of exposure to the risk of fluctuations in foreign currency exchange rates, the Company uses designated cash flow hedges and non-designated hedges in the form of foreign currency forward contracts to mitigate the impact of foreign currency translation on transactions that are denominated primarily in Japanese Yen, British Pounds, Euros, Canadian Dollars, Australian Dollars and Korean Won. The Company accounts for its foreign currency forward contracts in accordance with ASC Topic 815, "Derivatives and Hedging" ("ASC Topic 815"). ASC Topic 815 requires the recognition of all derivative instruments as either assets or liabilities on the balance sheet, the measurement of those instruments at fair value and the recognition of changes in the fair value of derivatives in earnings in the period of change, unless the derivative qualifies as a designated cash flow hedge that offsets certain exposures. Certain criteria must be satisfied in order for derivative financial instruments to be classified and accounted for as a cash flow hedge. Gains and losses from the remeasurement of qualifying cash flow hedges are recorded as a component of other comprehensive income and released into earnings as a component of cost of goods sold or net sales during the period in which the hedged transaction takes place. Gains and losses on the ineffective portion of hedges (hedges that do not meet accounting requirements due to ineffectiveness) and derivatives that are not elected for hedge accounting treatment are immediately recorded in earnings as a component of other income (expense). Foreign currency forward contracts are used only to meet the Company’s objectives of minimizing variability in the Company’s operating results arising from foreign exchange rate movements. The Company does not enter into foreign currency forward contracts for speculative purposes. The Company utilizes counterparties for its derivative instruments that it believes are credit-worthy at the time the transactions are entered into and the Company closely monitors the credit ratings of these counterparties. The following table summarizes the fair value of the Company's foreign currency forward contracts as well as the location of the asset and/or liability on the consolidated balance sheets at December 31, 2017 and 2016 (in thousands): Asset Derivatives December 31, 2017 December 31, 2016 Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedging instruments: Foreign currency forward contracts Other current assets $ 168 Other current assets $ 2,660 Derivatives not designated as hedging instruments: Foreign currency forward contracts Other current assets $ 11 Other current assets $ 864 Liability Derivatives December 31, 2017 December 31, 2016 Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedging instruments: Foreign currency forward contracts Accounts payable and accrued expenses $ 194 Accounts payable and accrued expenses $ 28 Derivatives not designated as hedging instruments: Foreign currency forward contracts Accounts payable and accrued expenses $ 45 Accounts payable and accrued expenses $ 57 The Company's foreign currency forward contracts are subject to a master netting agreement with each respective counterparty bank and are therefore net settled at their maturity date. Although the Company has the legal right of offset under the master netting agreements, the Company has elected not to present these contracts on a net settlement amount basis, and therefore present these contracts on a gross basis on the accompanying consolidated balance sheets at December 31, 2017 and 2016 . Cash Flow Hedging Instruments The Company uses foreign currency forward contracts designated as qualifying cash flow hedging instruments to help mitigate the Company's foreign currency exposure on intercompany sales of inventory to its foreign subsidiaries. These contracts generally mature within 12 to 15 months from their inception. At December 31, 2017 and 2016 , the notional amounts of the Company's foreign currency forward contracts designated as cash flow hedge instruments were approximately $14,210,000 and $ 55,938,000 , respectively. The reporting of gains and losses on these cash flow hedging instruments depends on whether the gains or losses are effective at offsetting changes in the cash flows of the underlying hedged items. The Company uses the critical terms method to measure the effectiveness of the foreign currency forward contracts and evaluates the effectiveness on a quarterly basis. The effective portion of the gains and losses on the hedging instruments are recorded in other comprehensive income until recognized in earnings during the period that the hedged transactions take place. Any ineffective portion of the gains and losses from the hedging instruments is recognized in earnings immediately. The Company would discontinue hedge accounting prospectively (i) if it is determined that the derivative is no longer effective in offsetting changes in the cash flows of a hedged item, (ii) when the derivative expires or is sold, terminated, or exercised, (iii) if it becomes probable that the forecasted transaction being hedged by the derivative will not occur, (iv) if a hedged firm commitment no longer meets the definition of a firm commitment, or (v) if it is determined that designation of the derivative as a hedge instrument is no longer appropriate. The Company estimates the fair value of its foreign currency forward contracts based on pricing models using current market rates. These contracts are classified under Level 2 of the fair value hierarchy (see Note 15 ). As of December 31, 2017 , the Company recorded a net loss of $2,679,000 in other comprehensive income (loss) related to its hedging activities. Of this amount, for the year ended December 31, 2017 , net losses of $187,000 were relieved from other comprehensive income and recognized in cost of goods sold for the underlying intercompany sales that were recognized. There were no ineffective gains or losses recognized during 2017 . During 2015, the Company recognized $1,149,000 in other income (expense) as a result of hedge ineffectiveness, of which $576,000 was reclassified from other comprehensive income for hedges that no longer met the accounting requirements. Gains on forward points of $287,000 were recognized as incurred. Based on the current valuation, the Company expects to reclassify net losses of $20,000 from accumulated other comprehensive income (loss) into net earnings during the next 12 months. See Note 2 for a rollforward of accumulated other comprehensive income. The following tables summarize the net effect of all cash flow hedges on the consolidated financial statements for the year ended December 31, 2017 and 2016 (in thousands): Net Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion) Year Ended December 31, Derivatives designated as cash flow hedging instruments 2017 2016 2015 Foreign currency forward contracts $ (2,679 ) $ (538 ) $ 2,316 Net Gain (Loss) Reclassified from Other Comprehensive Income into Earnings (Effective Portion) Year Ended December 31, Derivatives designated as cash flow hedging instruments 2017 2016 2015 Foreign currency forward contracts $ (187 ) $ (2,514 ) $ 1,791 Net Gain Recognized in Other Income (Expense) (Ineffective Portion) Year Ended December 31, Derivatives designated as cash flow hedging instruments 2017 2016 2015 Foreign currency forward contracts $ — $ — $ 1,149 Foreign Currency Forward Contracts Not Designated as Hedging Instruments The Company uses foreign currency forward contracts that are not designated as qualified hedging instruments to mitigate certain balance sheet exposures (payables and receivables denominated in foreign currencies), as well as gains and losses resulting from the translation of the operating results of the Company’s international subsidiaries into U.S. dollars for financial reporting purposes. These contracts generally mature within 12 months from their inception. At December 31, 2017 , 2016 and 2015 , the notional amounts of the Company’s foreign currency forward contracts used to mitigate the exposures discussed above were approximately $4,821,000 , $14,821,000 and $43,098,000 , respectively. The decrease in foreign currency forward contracts reflects the general timing of when the Company enters into these contracts. The Company estimates the fair values of foreign currency forward contracts based on pricing models using current market rates, and records all derivatives on the balance sheet at fair value with changes in fair value recorded in the statement of operations. The foreign currency contracts are classified under Level 2 of the fair value hierarchy (see Note 15 ). The following table summarizes the location of gains and losses on the consolidated statements of operations that were recognized during the years ended December 31, 2017 , 2016 and 2015 , respectively, in addition to the derivative contract type (in thousands): Amount of Gain (Loss) Recognized in Income on Derivative Instruments Derivatives not designated as hedging instruments Location of gain (loss) recognized in income on derivative instruments Years Ended December 31, 2017 2016 2015 Foreign currency forward contracts Other income (expense), net $ (7,985 ) $ (6,563 ) $ 1,322 In addition, during the year ended December 31, 2017 and 2016 , the Company recognized net foreign currency gains of $808,000 and $226,000 related to transactions with foreign subsidiaries, respectively. During the year ended December 31, 2015, the Company recognized net foreign currency losses of $1,611,000 , respectively, related to transactions with foreign subsidiaries.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segment Information	Note 17. Segment Information The Company has three operating segments, namely Golf Clubs, Golf Balls and Gear, Accessories and Other as of December 31, 2017. Prior to 2017, the Company's operating segments consisted of Golf Clubs and Golf Balls. Due to the recent growth in the accessories and other product category within Golf Clubs from the formation of the apparel joint venture in Japan as well as the Company's acquisition of OGIO in January 2017, the Company reassessed its operating segments during the first quarter of 2017, consistent with the way management reviews its business operations on an ongoing basis. As a result, and based on the Company's assessment, as of January 1, 2017, the Company added a third operating segment, Gear, Accessories and Other, which includes soft goods products and licensing revenues that were formerly in the accessories and other product category within Golf Clubs. Soft goods products include golf apparel and footwear, golf bags, golf gloves, travel gear, headwear and other golf-related accessories, retail apparel sales from the Company's joint venture in Japan, and OGIO branded products as of January 2017. Licensing revenues include royalties from licensing of the Company’s trademarks and service marks for various soft goods. TravisMathew branded products are also included in this operating segment as of August 2017. Subsequent to this change, the Golf Clubs operating segment consists of Callaway Golf woods, hybrids, irons and wedges, Odyssey putters, including Toulon Design putters by Odyssey, packaged sets and sales of pre-owned golf clubs. At the product category level, sales of packaged sets are included within irons, and sales of pre-owned golf clubs are included in the respective woods, irons and putters product categories. The Golf Balls segment continues to consist of Callaway Golf and Strata golf balls that are designed, manufactured and sold by the Company. As a result of these changes, prior period amounts have been reclassified in order to make prior periods comparable to 2017. The Company's operating segments are organized on the basis of products. There are no significant intersegment transactions. The table below contains information utilized by management to evaluate its operating segments. Years Ended December 31, 2017 2016 (1) 2015 (1) (In thousands) Net sales: Golf Clubs $ 643,096 $ 582,381 $ 581,450 Golf Balls 162,546 152,261 143,173 Gear, Accessories and Other 243,094 136,550 119,171 $ 1,048,736 $ 871,192 $ 843,794 Income (loss) before income tax: Golf Clubs $ 77,018 $ 48,489 $ 32,630 Golf Balls 26,854 23,953 18,956 Gear, Accessories and Other 30,631 18,223 19,137 Reconciling items (2) (66,448 ) (32,272 ) (50,660 ) $ 68,055 $ 58,393 $ 20,063 Identifiable assets: (3) Golf Clubs $ 321,265 $ 276,654 $ 295,659 Golf Balls 57,120 45,758 47,884 Gear, Accessories and Other 236,515 35,788 36,429 Reconciling items (3) 376,257 443,082 251,252 $ 991,157 $ 801,282 $ 631,224 Additions to long-lived assets: (4) Golf Clubs $ 11,396 $ 6,163 $ 6,774 Golf Balls 12,178 6,585 7,238 Gear, Accessories and Other 3,790 2,050 2,253 $ 27,364 $ 14,798 $ 16,265 Goodwill: Golf Clubs $ 26,904 $ 25,593 $ 26,500 Golf Balls — — — Gear, Accessories and Other (5) 29,525 — — $ 56,429 $ 25,593 $ 26,500 Depreciation and amortization: Golf Clubs $ 8,769 $ 8,509 $ 8,907 Golf Balls 4,496 4,355 4,566 Gear, Accessories and Other 4,340 3,722 3,906 $ 17,605 $ 16,586 $ 17,379 (1) Prior period amounts have been reclassified to conform to the current year presentation as the result of the change in operating segments as of January 1, 2017. (2) Reconciling items represent the deduction of corporate general and administration expenses and other income (expenses), which are not utilized by management in determining segment profitability. The $34,176,000 increase in reconciling items in 2017 compared to 2016 was primarily due $11,264,000 in one-time transaction and transitional costs associated with the acquisitions of OGIO in January 2017 and TravisMathew in August 2017, a $17,662,000 gain recognized in the second quarter of 2016 in connection with the sale of approximately 10.0% of the Company's investment in Topgolf (see Note 7), combined with increases of $2,286,000 in corporate stock compensation expense and $2,164,000 in interest expense, partially offset by a $4,189,000 increase in foreign currency exchange losses. (3) Identifiable assets are comprised of net inventory, certain property, plant and equipment, intangible assets and goodwill. Reconciling items represent unallocated corporate assets not segregated between the three segments including cash and cash equivalents, net accounts receivable, and deferred tax assets. The $66,825,000 decrease in reconciling items in 2017 compared to 2016 was primarily due Topgolf investment. The $191,830,000 increase in reconciling items in 2016 compared to 2015 was primarily due to a benefit of $156,600,000 related to the reversal of the Company's valuation allowance on its U.S. deferred tax assets. This reversal was partially offset by the recognition of $15,974,000 in income taxes payable on the Company's U.S. business (see Note 10 ). (4) Additions to long-lived assets are comprised of purchases of property, plant and equipment. (5) The $30,836,000 increase in goodwill in 2017 compared to 2016 was primarily as a result of the acquisitions of OGIO and TravisMathew in 2017. The Company’s net sales by product category are as follows: Years Ended December 31, 2017 2016 2015 (In thousands) Net sales: Woods $ 307,865 $ 216,094 $ 222,193 Irons 250,636 278,562 205,522 Putters 84,595 87,725 86,293 Golf Balls 162,546 152,261 143,145 Accessories and Other 243,094 136,550 186,641 $ 1,048,736 $ 871,192 $ 843,794 The Company markets its products in the United States and internationally, with its principal international markets being Japan and Europe. The tables below contain information about the geographical areas in which the Company operates. Revenues are attributed to the location to which the product was shipped. Long-lived assets are based on location of domicile. Sales Long-Lived Assets (1) (In thousands) 2017 United States $ 566,365 $ 403,493 Europe 139,515 7,681 Japan 199,331 7,635 Rest of Asia 76,540 3,717 Other foreign countries 66,985 11,248 $ 1,048,736 $ 433,774 2016 United States $ 447,613 $ 199,617 Europe 122,805 7,260 Japan 170,760 6,201 Rest of Asia 67,099 2,668 Other foreign countries 62,915 10,405 $ 871,192 $ 226,151 2015 United States $ 446,474 $ 205,952 Europe 125,116 8,414 Japan 138,031 4,445 Rest of Asia 70,315 2,868 Other foreign countries 63,858 11,096 $ 843,794 $ 232,775 (1) Long-lived assets include all non-current assets of the Company except deferred tax assets.

Transactions with Related Parti

Transactions with Related Parties	12 Months Ended
	Dec. 31, 2017
Related Party Transactions [Abstract]
Transactions with Related Parties	Note 18. Transactions with Related Parties The Callaway Golf Company Foundation (the “Foundation”) oversees and administers charitable giving and makes grants to selected organizations. Officers of the Company also serve as directors of the Foundation and the Company’s employees provide accounting and administrative services for the Foundation. During 2017 , 2016 and 2015 , the Company recognized charitable contribution expense of $750,000 , $750,000 , and $1,000,000 for the Foundation, respectively.

Summarized Quarterly Data (Unau

Summarized Quarterly Data (Unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Summarized Quarterly Data (Unaudited)	Note 19. Summarized Quarterly Data (Unaudited) Fiscal Year 2017 Quarters 1st 2nd 3rd 4th Total (2) (In thousands, except per share data) Net sales $ 308,927 $ 304,548 $ 243,604 $ 191,657 $ 1,048,736 Gross profit $ 147,715 $ 148,165 $ 104,902 $ 79,666 $ 480,448 Net income (loss) $ 25,880 $ 31,474 $ 3,089 $ (18,776 ) $ 41,667 Less: Net income attributable to non-controlling interests $ 191 $ 31 $ 29 $ 610 $ 861 Net income (loss) attributable to Callaway Golf Company $ 25,689 $ 31,443 $ 3,060 $ (19,386 ) $ 40,806 Earnings (loss) per common share (1) Basic $ 0.27 $ 0.33 $ 0.03 $ (0.20 ) $ 0.43 Diluted $ 0.27 $ 0.33 $ 0.03 $ (0.20 ) $ 0.42 Fiscal Year 2016 Quarters 1st 2nd 3rd 4th (2) Total (2) (In thousands, except per share data) Net sales $ 274,053 $ 245,594 $ 187,850 $ 163,695 $ 871,192 Gross profit $ 132,392 $ 110,633 $ 78,875 $ 63,111 $ 385,011 Net income (loss) $ 38,390 $ 34,105 $ (5,739 ) $ 124,198 $ 190,954 Less: Net income attributable to non-controlling interests $ — $ — $ 127 $ 927 $ 1,054 Net income (loss) attributable to Callaway Golf Company $ 38,390 $ 34,105 $ (5,866 ) $ 123,271 $ 189,900 Earnings (loss) per common share (1) Basic $ 0.41 $ 0.36 $ (0.06 ) $ 1.31 $ 2.02 Diluted $ 0.40 $ 0.36 $ (0.06 ) $ 1.28 $ 1.98 (1) Earnings per share is computed individually for each of the quarters presented; therefore, the sum of the quarterly earnings per share may not necessarily equal the total for the year. (2) During the fourth quarter of 2016, the Company reversed a significant portion of the valuation allowance on its U.S. deferred tax assets. This resulted in a favorable impact to net income of $156,600,000 ( $1.63 per share), partially offset by $15,974,000 ( $0.16 per share) in income taxes that were retroactive for all of 2016 on the Company's U.S. business (see Note 10 ). In addition, net income for 2016 includes a $17,662,000 ( $0.18 per share) pre-tax gain from the sale of approximately 10.0% of the Company's investment in Topgolf (see Note 7 ).

Summary of Significant Accoun27

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of the Company and its domestic and foreign subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States ("GAAP") requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Examples of such estimates include provisions for warranty, uncollectible accounts receivable, inventory obsolescence, sales returns, tax contingencies and provisional estimates due to the Tax Cuts and Jobs Act (the "Tax Act") enacted in December 2017, estimates on the valuation of share-based awards and recoverability of long-lived assets and investments. Actual results may materially differ from these estimates. On an ongoing basis, the Company reviews its estimates to ensure that these estimates appropriately reflect changes in its business or as new information becomes available.
Recent Accounting Standards	Recent Accounting Standards In August 2017, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." The new standard is designed to refine and expand hedge accounting for both financial (e.g., interest rate) and commodity risks. Its provisions create more transparency around how economic results are presented, both on the face of the financial statements and in the footnotes. It also makes certain targeted improvements to simplify the application of hedge accounting guidance. The new standard is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption, including adoption in an interim period, is permitted. If early adoption is elected in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period (i.e., the initial application date). The Company is currently evaluating the impact this ASU will have on its consolidated condensed financial statements and disclosures. In March 2016, the FASB issued ASU No. 2016-09, "Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting." This amendment is intended to simplify several aspects of the accounting for share-based payment transactions, including (i) the recognition of excess tax benefits or deficiencies in the operating statement when compensatory stock awards are vested and settled, and the presentation of these tax benefits or deficiencies as an operating cash outflow on the statement of cash flows, (ii) the option to withhold the maximum statutory tax rate on the settlement of compensatory stock without triggering liability accounting, as well as presenting the shares withheld for the settlement of these taxes as a financing outflow on the statement of cash flows, and (iii) the option to elect a change in the accounting policy to account for forfeitures as they occur. This amendment became effective for the Company as of January 1, 2017. The Company adopted this ASU using the modified retrospective transition method with respect to the recognition of excess tax benefits in the consolidated condensed statement of operations. The adoption did not result in a cumulative-effect adjustment to equity as of January 1, 2017. The amendment related to the cash flow presentation of shares acquired to satisfy the Company's minimum tax withholding requirements in connection with the settlement of compensatory stock was applied retrospectively as a financing outflow. The adoption had no impact to any periods presented on the consolidated condensed statement of cash flows as these cash outflows have historically been presented as a financing activity. The Company elected not to change its accounting policy on the recognition of estimated forfeitures. In March 2016, the FASB issued ASU No. 2016-04, "Liabilities—Extinguishment of Liabilities (Subtopic 405-20): Recognition of Breakage for Certain Prepaid Stored-Value Products." The amendment clarifies when it is acceptable to recognize the unredeemed portion of prepaid gift cards into income, and is effective for fiscal years, and interim periods within those years, beginning after December 15, 2017, with early adoption permitted. The Company does not expect the adoption of this amendment will have a material impact on the Company's consolidated financial statements. As of December 31, 2017 , the Company had $971,000 of deferred revenue related to unredeemed gift cards. In February 2016, the FASB issued ASU No. 2016-02, "Leases (Topic 842)." Under the new guidance, lessees will be required to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (i) a lease liability, which is a lessee's obligation to make lease payments arising from a lease, measured on a discounted basis; and (ii) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged and lessees will no longer be provided with a source of off-balance sheet financing. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the impact this ASU will have on its consolidated financial statements and disclosures. In January 2016, the FASB issued ASU No. 2016-01, "Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities." The amendment requires (i) equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, (ii) public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes and (iii) separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables). This amendment eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. This amendment is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. As of December 31, 2017, the Company had an investment in Topgolf International, Inc. of $70,495,000 , consisting of common stock and various classes of preferred stock, that was accounted for at cost in accordance with ASC Topic 325, “Investments—Other.” Based on prior observable market transactions, the Company believes that the fair value of its investment in Topgolf significantly exceeds its cost. If there are any observable price changes related to this investment or a similar investment of the same issuer in fiscal years beginning after December 15, 2017, the Company would be required to assess the fair value impact, if any, on each class of stock, and write the individual security interest up or down to its estimated fair value, which could have a significant effect on the Company's financial position and results of operations (see Note 7 ). In July 2015, the FASB issued ASU No. 2015-11, "Inventory (Topic 330): Simplifying the Measurement of Inventory." This amendment requires an entity to measure in-scope inventory at the lower of cost or net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. For public business entities, this ASU is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The adoption of this amendment did not have a material impact on the Company's consolidated condensed financial statements. In May 2014, the FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers: (Topic 606)." This ASU affects any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (e.g., insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU also requires additional disclosures regarding revenue and contracts with customers. The Company completed its analysis of this ASU, and determined that the new standard will not change the total amount of revenue recognized, only accelerate the timing of accruals of certain sales promotions and price concessions that the Company offers to its retailers to earlier in the product life cycle. This shift in expense will have an impact on quarter-over-quarter net sales trends. The Company will adopt the new standard as of January 1, 2018 using the modified retrospective approach, which requires the prospective application of the new standard with disclosures of results under the old standard in order to make period over period comparisons comparable. Upon adoption, the Company expects to record a one-time reduction to retained earnings, net of income taxes, of approximately $11,000,000 , with a corresponding reduction to accounts receivable and an increase to deferred tax assets in its consolidated condensed balance sheet.
Revenue Recognition	Revenues from gift cards are deferred and recognized when the cards are redeemed. In addition, the Company recognizes revenue from unredeemed gift cards when the likelihood of redemption becomes remote and under circumstances that comply with any applicable state escheatment laws. The Company’s gift cards have no expiration date. To determine when redemption is remote, the Company analyzes an aging of unredeemed cards (based on the date the card was last used or the activation date if the card has never been used) and compares that information with historical redemption trends. Revenue Recognition Through December 31, 2017, the Company accounted for revenue recognition in accordance with Accounting Standards Codification (“ASC”) Topic 605, “Revenue Recognition.” As stated above, beginning on January 1, 2018, the Company will account for revenue recognition under Topic 606, "Revenue from Contracts with Customers," which will accelerate the timing of certain sales promotions and price concessions that the Company offers to its retailers to earlier in the product life cycle. In accordance with Topic 605, sales are recognized, in general, as products are shipped to customers, and at point of sale for transactions in retail locations, net of an allowance for sales returns and sales programs. In certain cases, the Company recognizes sales when products are received by customers. The criteria for recognition of revenue are met when persuasive evidence that an arrangement exists and both title and risk of loss have passed to the customer, the price is fixed or determinable and collectability is reasonably assured. Sales returns are estimated based upon historical returns, current economic trends, changes in customer demands and sell-through of products. The Company also records estimated reductions to revenue for sales programs such as incentive offerings. Sales program accruals are estimated based upon the attributes of the sales program, management’s forecast of future product demand, and historical customer participation in similar programs.
Warranty Policy	Warranty Policy The Company has a stated two -year warranty policy for its golf clubs. The Company’s policy is to accrue the estimated cost of satisfying future warranty claims at the time the sale is recorded. In estimating its future warranty obligations, the Company considers various relevant factors, including the Company’s stated warranty policies and practices, the historical frequency of claims, and the cost to replace or repair its products under warranty.
Fair Value Measurements	Fair Value Measurements Fair value is defined as the price that would be received to sell an asset or the price paid to transfer a liability (the exit price) in the principal and most advantageous market for the asset or liability in an orderly transaction between market participants. The Company measures and discloses the fair value of nonfinancial and financial assets and liabilities utilizing a hierarchy of valuation techniques based on whether the inputs to a fair value measurement are considered to be observable or unobservable in a marketplace. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. This hierarchy requires the use of observable market data when available. The measurement of assets and liabilities at fair value are classified using the following three-tier hierarchy: Level 1 : Quoted market prices in active markets for identical assets or liabilities; Level 2 : Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations in which significant inputs and significant value drivers are observable in active markets; and Level 3 : Fair value measurements derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable. The Company measures fair value using a set of standardized procedures that are outlined herein for all assets and liabilities which are required to be measured at fair value. When available, the Company utilizes quoted market prices from an independent third-party source to determine fair value and classifies such items in Level 1. In some instances where a market price is available, but the instrument is in an inactive or over-the-counter market, the Company consistently applies the dealer (market maker) pricing estimate and uses a midpoint approach on bid and ask prices from financial institutions to determine the reasonableness of these estimates. Assets and liabilities subject to this fair value valuation approach are typically classified as Level 2. Items valued using internally-generated valuation techniques are classified according to the lowest level input that is significant to the fair value measurement. As a result, the asset or liability could be classified in either Level 2 or Level 3 even though there may be some significant inputs that are readily observable. The Company utilizes a discounted cash flow valuation model whenever applicable to derive a fair value measurement on long-lived assets and goodwill and intangible assets. The Company uses its internal cash flow estimates discounted at an appropriate rate, quoted market prices, royalty rates when available and independent appraisals as appropriate. The Company also considers its counterparty’s and own credit risk on derivatives and other liabilities measured at their fair value.
Advertising Costs	Advertising Costs The Company's primary advertising costs are from television and print media advertisements. The Company’s policy is to expense advertising costs, including production costs, as incurred.
Research and Development Costs	Research and Development Costs Research and development costs are expensed as incurred.
Foreign Currency Translation and Transactions	Foreign Currency Translation and Transactions A significant portion of the Company’s business is conducted outside of the United States in currencies other than the U.S. dollar. As a result, changes in foreign currency exchange rates can have a significant effect on the Company’s financial results. Revenues and expenses that are denominated in foreign currencies are translated using the average exchange rate for the period. Assets and liabilities are translated at the rate of exchange on the balance sheet date. Gains and losses from assets and liabilities denominated in a currency other than the functional currency of the entity on which they reside are generally recognized currently in the Company's statements of operations. Gains and losses from the translation of foreign subsidiary financial statements into U.S. dollars are included in accumulated other comprehensive income or loss (see Accumulated Other Comprehensive Income policy below).
Derivatives and Hedging	Derivatives and Hedging In order to mitigate the impact of foreign currency translation on transactions, the Company uses foreign currency forward contracts that are accounted for as non-designated and designated hedges pursuant to ASC Topic 815, “Derivatives and Hedging” ("ASC Topic 815"). ASC Topic 815 requires that an entity recognize all derivatives as either assets or liabilities in the balance sheet, measure those instruments at fair value and recognize changes in the fair value of derivatives in earnings in the period of change unless the derivative qualifies as designated cash flow hedge that offsets certain exposures. Certain criteria must be satisfied in order for derivative financial instruments to be classified and accounted for as a cash flow hedge. Gains and losses from the remeasurement of qualifying cash flow hedges are recorded as a component of other comprehensive income and released into earnings as a component of cost of goods sold or net sales during the period in which the hedged transaction takes place. Gains and losses on the ineffective portion of hedges (hedges that do not meet accounting requirements due to ineffectiveness) and derivatives that are not elected for hedge accounting treatment are immediately recorded in earnings as a component of other income (expense).
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents are highly liquid investments purchased with original maturities of three months or less.
Trade Accounts Receivable	Trade Accounts Receivable The Company records its trade accounts receivable at net realizable value. This value includes an appropriate allowance for estimated uncollectible accounts to reflect any loss anticipated on the trade accounts receivable balances and charged to the provision for doubtful accounts.
Allowance for Doubtful Accounts	An estimate of uncollectible amounts is made by management based upon historical bad debts, current customer receivable balances, age of customer receivable balances, the customer’s financial condition and current economic trends, all of which are subject to change. Actual uncollected amounts have historically been consistent with the Company’s expectations. In general, the Company has trade insurance to mitigate the risk of uncollectible accounts on its outstanding accounts receivable. The Company considers this insurance coverage when estimating its provision for uncollectible accounts. Insurance claim recoveries from this trade insurance are applied to the Company’s outstanding accounts receivable or are recorded as a reduction to bad debt expense in the period in which the claim is received.
Inventories	Inventories Inventories are valued at the lower of cost or net realizable value. Cost is determined using the first-in, first-out (FIFO) method. The inventory balance, which includes material, labor and manufacturing overhead costs, is recorded net of an estimate for obsolete or unmarketable inventory. This estimate is based upon current inventory levels, sales trends and historical experience as well as management’s estimates of market conditions and forecasts of future product demand, all of which are subject to change.
Property, Plant and Equipment	Property, Plant and Equipment Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over estimated useful lives as follows: Buildings and improvements 10-30 years Machinery and equipment 5-10 years Furniture, computers and equipment 3-5 years Production molds 2-5 years Normal repairs and maintenance costs are expensed as incurred. Expenditures that materially increase values, change capacities or extend useful lives are capitalized. The related costs and accumulated depreciation of disposed assets are eliminated and any resulting gain or loss on disposition is included in net income/(loss). Construction in-process consists primarily of costs associated with building improvements, machinery and equipment that have not yet been placed into service, unfinished molds as well as in-process internally developed software. In accordance with ASC Topic 350-40, “Internal-Use Software,” the Company capitalizes certain costs incurred in connection with developing or obtaining internal use software. Costs incurred in the preliminary project stage are expensed. All direct external costs incurred to develop internal-use software during the development stage are capitalized and amortized using the straight-line method over the remaining estimated useful lives. Costs such as maintenance and training are expensed as incurred.
Long-Lived Assets	Long-Lived Assets In accordance with ASC Topic 360-10-35, “Impairment or Disposal of Long-Lived Assets”, the Company assesses potential impairments of its long-lived assets whenever events or changes in circumstances indicate that the asset’s carrying value may not be recoverable. An impairment charge would be recognized when the carrying amount of a long-lived asset or asset group is not recoverable and exceeds its fair value. The carrying amount of a long-lived asset or asset group is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset or asset group.
Goodwill and Intangible Assets	Goodwill and Intangible Assets Goodwill and intangible assets, which consist of trade names, trademarks, service marks, trade dress, patents and other intangible assets, were acquired in connection with the acquisition of Odyssey Sports, Inc. in 1997, FrogTrader, Inc. in 2004, OGIO in January 2017, TravisMathew in August 2017, and certain foreign distributors. In accordance with ASC Topic 350, “Intangibles—Goodwill and Other,” goodwill and intangible assets with indefinite lives are not amortized but instead are measured for impairment at least annually or more frequently when events indicate that an impairment exists. The Company calculates impairment as the excess of the carrying value of goodwill and other indefinite-lived intangible assets over their estimated fair value. If the carrying value exceeds the estimate of fair value a write-down is recorded. To determine fair value, the Company uses its internal discounted cash flow estimates, quoted market prices, royalty rates when available and independent appraisals when appropriate. The Company completed its annual impairment test and fair value analysis of goodwill and other indefinite-lived intangible assets as of December 31, 2017 , and the estimated fair values of the Company’s reporting units, as well as the estimated fair values of certain trade names and trademarks, significantly exceeded their carrying values. As a result, no impairment was recorded as of December 31, 2017 . Intangible assets that are determined to have definite lives are amortized over their estimated useful lives and are measured for impairment only when events or circumstances indicate the carrying value may be impaired in accordance with ASC Topic 360-10-35 discussed above.
Investments	Investments The Company determines the appropriate classification of its investments at the time of acquisition and reevaluates such classification at each balance sheet date. Investments that do not have readily determinable fair values are stated at cost. The Company monitors investments for impairment whenever events or changes in circumstances indicate that the investment's carrying value may not be recoverable. An impairment charge would be recognized when the carrying amount exceeds its fair value.
Share-Based Compensation	Share-Based Compensation The Company accounts for its share-based compensation arrangements in accordance with ASC Topic 718, “Compensation—Stock Compensation” (“ASC Topic 718”), which requires the measurement and recognition of compensation expense for all share-based payment awards to employees and non-employees based on estimated fair values. ASC Topic 718 further requires a reduction in share-based compensation expense by an estimated forfeiture rate. The forfeiture rate used by the Company is based on historical forfeiture trends. If actual forfeiture rates are not consistent with the Company’s estimates, the Company may be required to increase or decrease compensation expenses in future periods. Performance share units are stock-based awards in which the number of shares ultimately received depends on the Company's performance against specified goals that are measured over a designated performance period from the date of grant. These performance goals are established by the Company at the beginning of the performance period. At the end of the performance period, the number of shares of stock that could be issued is fixed based upon the degree of achievement of the performance goals. The number of shares that could be issued can range from 0% to 200% of the participant's target award. Performance share units are initially valued at the Company's closing stock price on the date of grant. Compensation expense, net of estimated forfeitures, is recognized over the vesting period and will vary based on the anticipated performance level during the performance period. If the performance goals are not probable of achievement during the performance period, compensation expense would be reversed. The awards are forfeited if the performance goals are not achieved as of the end of the performance period. The performance units vest in full at the end of a three -year period. The Company uses the Black-Scholes option valuation model to estimate the fair value of its stock options and stock appreciation rights (“SARs”) at the date of grant. The Black-Scholes option valuation model requires the input of subjective assumptions to calculate the value of stock options/SARs. The Company uses historical data among other information to estimate the expected price volatility, expected term and forfeiture rate. The Company uses forecasted dividends to estimate the expected dividend yield. The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant. Compensation expense is recognized on a straight-line basis over the vesting period for stock options. Compensation expense for SARs is recognized on a straight-line basis over the vesting period based on an estimated fair value, which is remeasured at the end of each reporting period. Once vested, the SARs continue to be remeasured to fair value until they are exercised. The Company records compensation expense for restricted stock awards and restricted stock units (collectively “restricted stock”) based on the estimated fair value of the award on the date of grant. The estimated fair value is determined based on the closing price of the Company’s common stock on the award date multiplied by the number of shares underlying the restricted stock awarded. Total compensation expense is recognized on a straight-line basis over the vesting period. Phantom stock units are a form of share-based awards that are indexed to the Company’s stock and are settled in cash. Compensation expense is recognized on a straight-line basis over the vesting period based on the award’s estimated fair value. Fair value is remeasured at the end of each interim reporting period through the award’s settlement date and is based on the closing price of the Company’s stock.
Income Taxes	Income Taxes Current income tax expense or benefit is the amount of income taxes expected to be payable or receivable for the current year. A deferred income tax asset or liability is established for the difference between the tax basis of an asset or liability computed pursuant to ASC Topic 740 and its reported amount in the financial statements that will result in taxable or deductible amounts in future years when the reported amount of the asset or liability is recovered or settled, respectively. The Company maintains a valuation allowance for a deferred tax asset when it is deemed to be more likely than not that some or all of the deferred tax asset will not be realized. In evaluating whether a valuation allowance is required under such rules, the Company considers all available positive and negative evidence, including prior operating results, the nature and reason for any losses, its forecast of future taxable income, and the dates on which any deferred tax assets are expected to expire. These assumptions require a significant amount of judgment, including estimates of future taxable income. These estimates are based on the Company’s best judgment at the time made based on current and projected circumstances and conditions. In 2011, as a result of this evaluation, the Company recorded a valuation allowance against its U.S. deferred tax assets. During the fourth quarter of 2016, the Company reversed a significant portion of the valuation allowance on those deferred tax assets. For further information, see Note 10 “ Income Taxes .” Pursuant to ASC Topic 740-25-6, the Company is required to accrue for the estimated additional amount of taxes for uncertain tax positions if it is deemed to be more likely than not that the Company would be required to pay such additional taxes. The Company is required to file federal and state income tax returns in the United States and various other income tax returns in foreign jurisdictions. The preparation of these income tax returns requires the Company to interpret the applicable tax laws and regulations in effect in such jurisdictions, which could affect the amount of tax paid by the Company. The Company accrues an amount for its estimate of additional tax liability, including interest and penalties in income tax expense, for any uncertain tax positions taken or expected to be taken in an income tax return. The Company reviews and updates the accrual for uncertain tax positions as more definitive information becomes available. Historically, additional taxes paid as a result of the resolution of the Company’s uncertain tax positions have not been materially different from the Company’s expectations. The Company recognizes interest and/or penalties related to income tax matters in income tax expense.
Other Income (Expense), Net	Other Income (Expense), Net Other income (expense), net primarily includes gains and losses on foreign currency forward contracts and foreign currency transactions.
Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Loss Accumulated other comprehensive loss includes the impact of foreign currency translation adjustments and activity related to derivative instruments designated for hedge accounting.
Segment Information	Segment Information The Company has three operating segments, namely Golf Clubs, Golf Balls and Gear, Accessories and Other as of December 31, 2017. Prior to 2017, the Company's operating segments consisted of Golf Clubs and Golf Balls. Due to the recent growth in the accessories and other product category within Golf Clubs from the formation of the apparel joint venture in Japan as well as the Company's acquisition of OGIO in January 2017, the Company reassessed its operating segments during the first quarter of 2017, consistent with the way management reviews its business operations on an ongoing basis. As a result, and based on the Company's assessment, as of January 1, 2017, the Company added a third operating segment, Gear, Accessories and Other, which includes soft goods products and licensing revenues that were formerly in the accessories and other product category within Golf Clubs. Soft goods products include golf apparel and footwear, golf bags, golf gloves, travel gear, headwear and other golf-related accessories, retail apparel sales from the Company's joint venture in Japan, and OGIO branded products as of January 2017. Licensing revenues include royalties from licensing of the Company’s trademarks and service marks for various soft goods. TravisMathew branded products are also included in this operating segment as of August 2017. Subsequent to this change, the Golf Clubs operating segment consists of Callaway Golf woods, hybrids, irons and wedges, Odyssey putters, including Toulon Design putters by Odyssey, packaged sets and sales of pre-owned golf clubs. The Golf Balls segment continues to consist of Callaway Golf and Strata golf balls that are designed, manufactured and sold by the Company. As a result of these changes, prior period amounts have been reclassified in order to make prior periods comparable to 2017.
Concentration of Risk	Concentration of Risk The Company operates in the golf equipment industry and has a concentrated customer base, which is primarily comprised of golf equipment retailers (including pro shops at golf courses and off-course retailers), sporting goods retailers and mass merchants and foreign distributors. On a consolidated basis, no single customer accounted for more than 10% , 8% and 9% of the Company’s consolidated revenues in 2017 , 2016 and 2015 , respectively. The Company's top five customers accounted for approximately 21% , 22% and 26% of the Company's consolidated revenues in 2017, 2016 and 2015, respectively. With respect to the Company's segments, the Company's top five • Golf Club customers accounted for approximately 20% , 26% and 28% of total consolidated Golf Club sales in 2017, 2016 and 2015, respectively; • Golf Ball customers accounted for approximately 30% , 28% and 30% of total consolidated Golf Ball sales in 2017, 2016 and 2015, respectively; and • Gear and Accessories customers accounted for approximately 15% , 18% and 21% of total consolidated Gear and Accessories sales in 2017, 2016 and 2015 , respectively. A loss of one or more of these customers could have a significant effect on the Company's net sales. Prior period percentages have been reclassified to conform to the current year presentation as the result of the change in operating segments as of January 1, 2017. For further discussion, see Note 17 “ Segment Information .” With respect to the Company's trade receivables, the Company performs ongoing credit evaluations of its customers’ financial condition and generally requires no collateral from these customers. The Company maintains reserves for estimated credit losses, which it considers adequate to cover any such losses. At December 31, 2017 and 2016 , no single customer represented over 9% of the Company’s outstanding accounts receivable balance. Managing customer-related credit risk is more difficult in regions outside of the United States. Of the Company’s total net sales, approximately 46% , 49% and 47% were derived from sales outside of the United States in 2017 , 2016 and 2015 , respectively. Prolonged unfavorable economic conditions could significantly increase the Company’s credit risk with respect to its outstanding accounts receivable. The Company is dependent on a limited number of suppliers for its clubheads and shafts, some of which are single sourced. Furthermore, some of the Company’s products require specially developed manufacturing techniques and processes which make it difficult to identify and utilize alternative suppliers quickly. In addition, many of the Company’s suppliers are not well capitalized and prolonged unfavorable economic conditions could increase the risk that they will go out of business. If current suppliers are unable to deliver clubheads, shafts or other components, or if the Company is required to transition to other suppliers, the Company could experience significant production delays or disruption to its business. The Company also depends on a single or a limited number of suppliers for the materials it uses to make its golf balls. Many of these materials are customized for the Company. Any delay or interruption in such supplies could have a material adverse impact on the Company’s golf ball business. If the Company were to experience any such delays or interruptions, the Company may not be able to find adequate alternative suppliers at a reasonable cost or without significant disruption to its business. The Company’s financial instruments that are subject to concentrations of credit risk consist primarily of cash equivalents, trade receivables and foreign currency forward contracts. From time to time, the Company invests its excess cash in money market accounts and short-term U.S. government securities and has established guidelines relative to diversification and maturities in an effort to maintain safety and liquidity. These guidelines are periodically reviewed and modified to take advantage of trends in yields and interest rates. The Company enters into foreign currency forward contracts for the purpose of hedging foreign exchange rate exposures on existing or anticipated transactions. In the event of a failure to honor one of these contracts by one of the banks with which the Company has contracted, management believes any loss would be limited to the exchange rate differential from the time the contract was made until the time it was settled.

Summary of Significant Accoun28

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Reconciliation of Allowance for Sales Returns	The following table provides a reconciliation of the activity related to the Company’s allowance for sales returns: Years Ended December 31, 2017 2016 2015 (In thousands) Beginning balance $ 9,341 $ 8,148 $ 8,944 Provision 37,521 38,444 35,746 Sales returns (31,392 ) (37,251 ) (36,542 ) Ending balance $ 15,470 $ 9,341 $ 8,148
Reconciliation of Reserve for Warranty Expense	The following table provides a reconciliation of the activity related to the Company’s reserve for warranty expense: Years Ended December 31, 2017 2016 2015 (In thousands) Beginning balance $ 5,395 $ 5,706 $ 5,607 Provision 9,434 5,493 5,220 Claims paid/costs incurred (8,172 ) (5,804 ) (5,121 ) Ending balance $ 6,657 $ 5,395 $ 5,706
Reconciliation of Allowance for Doubtful Accounts	The following table provides a reconciliation of the activity related to the Company’s allowance for doubtful accounts: Years Ended December 31, 2017 2016 2015 (In thousands) Beginning balance $ 5,728 $ 5,645 $ 6,460 Provision 2,335 2,398 992 Write-off of uncollectible amounts, net of recoveries (3,616 ) (2,315 ) (1,807 ) Ending balance $ 4,447 $ 5,728 $ 5,645
Estimated Useful Lives	Depreciation is computed using the straight-line method over estimated useful lives as follows: Buildings and improvements 10-30 years Machinery and equipment 5-10 years Furniture, computers and equipment 3-5 years Production molds 2-5 years
Other Income (Expense) Net	Other income (expense), net primarily includes gains and losses on foreign currency forward contracts and foreign currency transactions. The components of other income (expense), net are as follows: Years Ended December 31, 2017 2016 2015 (In thousands) Foreign currency forward contract gain (loss), net $ (7,688 ) $ (2,917 ) $ 2,877 Foreign currency transaction gain (loss), net 808 226 (1,611 ) Other 9 1,001 199 $ (6,871 ) $ (1,690 ) $ 1,465
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table details the amounts reclassified from accumulated other comprehensive loss to cost of goods sold, as well as changes in foreign currency translation for the years ended December 31, 2017 , 2016 and 2015 (in thousands). Derivative Instruments Foreign Currency Translation Total Accumulated other comprehensive loss, December 31, 2014 $ — $ (796 ) $ (796 ) Change in derivative instruments 2,892 — 2,892 Amounts reclassified to other income (expense) due to hedge instrument ineffectiveness (576 ) — (576 ) Net gains reclassified to cost of goods sold (1,791 ) — (1,791 ) Foreign currency translation adjustments — (11,542 ) (11,542 ) Accumulated other comprehensive loss, December 31, 2015 525 (12,338 ) (11,813 ) Change in derivative instruments (567 ) — (567 ) Net losses reclassified to cost of goods sold 1,500 — 1,500 Net losses reclassified to net sales 1,014 — 1,014 Foreign currency translation adjustments — (7,698 ) (7,698 ) Income tax expense (902 ) — (902 ) Accumulated other comprehensive loss, December 31, 2016, after tax 1,570 (20,036 ) (18,466 ) Change in derivative instruments (2,679 ) — (2,679 ) Net losses reclassified to cost of goods sold 187 — 187 Foreign currency translation adjustments — 14,198 14,198 Income tax expense 594 — 594 Accumulated other comprehensive loss, December 31, 2017, after tax $ (328 ) $ (5,838 ) $ (6,166 )

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2017
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the preliminary estimated fair values of the assets acquired and liabilities assumed as of the acquisition date based on the purchase price allocation (in thousands): At August 17, 2017 Assets Acquired Cash $ 663 Accounts receivable 9,715 Inventory 11,909 Other current assets 549 Property and equipment 4,327 Other assets 117 Intangibles - trade name 78,400 Intangibles - licensing agreement 1,100 Intangibles - customer & distributor relationships 4,450 Intangibles - non-compete agreements 600 Goodwill 23,640 Total assets acquired 135,470 Liabilities Assumed Accounts Payable and accrued liabilities 10,892 Net assets acquired $ 124,578 The following table summarizes the fair values of the assets acquired and liabilities assumed as of the acquisition date based on the purchase price allocation (in thousands): At January 11, 2017 Assets Acquired Cash $ 8,061 Accounts receivable 7,696 Inventory 7,092 Other current assets 328 Property and equipment 2,369 Intangibles - trade name 49,700 Intangibles - customer & distributor relationships 1,500 Intangibles - non-compete agreements 150 Goodwill 5,885 Total assets acquired 82,781 Liabilities Assumed Accounts Payable and accrued liabilities 16,830 Net assets acquired $ 65,951
Business Acquisition, Pro Forma Information [Table Text Block]	Pre-acquisition net sales and net income amounts for both OGIO and TravisMathew were derived from the books and records of OGIO and TravisMathew prepared prior to the respective acquisition and are presented for informational purposes only and do not purport to be indicative of the results of future operations or of the results that would have occurred had the acquisition taken place as of the dates noted below. Years Ended December 31, 2017 2016 (in thousands) Net sales $ 1,086,593 $ 964,514 Net income (loss) attributable to Callaway Golf Company $ 52,514 $ 188,117

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Computation of Basic and Diluted Earnings (Loss) Per Share	The following table summarizes the computation of basic and diluted earnings per share: Years Ended December 31, 2017 2016 (1) 2015 (In thousands, except per share data) Earnings per common share—basic Net income attributable to Callaway Golf Company $ 40,806 $ 189,900 $ 14,568 Weighted-average common shares outstanding—basic 94,329 94,045 83,116 Basic earnings per common share $ 0.43 $ 2.02 $ 0.18 Earnings per common share—diluted Net income attributable to Callaway Golf Company $ 40,806 $ 189,900 $ 14,568 Weighted-average common shares outstanding—basic 94,329 94,045 83,116 Options and restricted stock 2,248 1,800 1,495 Weighted-average common shares outstanding—diluted 96,577 95,845 84,611 Diluted earnings per common share (1) $ 0.42 $ 1.98 $ 0.17 (1) During the fourth quarter of 2016, the Company reversed a significant portion of the valuation allowance on its U.S. deferred tax assets. This resulted in a favorable impact to net income of $156,600,000 ( $1.63 per share), partially offset by $15,974,000 ( $0.16 per share) as the result of the recognition of income taxes that were retroactive for all of 2016 on the Company's U.S. business (see Note 10 ). In addition, net income for 2016 includes a $17,662,000 ( $0.18 per share) pre-tax gain from the sale of approximately 10.0% of the Company's investment in Topgolf (see Note 7 ).

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets by Major Asset Class	The following sets forth the intangible assets by major asset class: Useful Life (Years) December 31, 2017 December 31, 2016 Gross Accumulated Amortization Net Book Value Gross Accumulated Net Book (In thousands) (In thousands) Indefinite-lived: Trade name, trademark and trade dress and other NA $ 218,364 $ — $ 218,364 $ 88,590 $ — $ 88,590 Amortizing: Patents 2-16 31,581 31,491 90 31,581 31,440 141 Developed technology and other 1-9 15,780 8,476 7,304 7,981 7,981 — Total intangible assets $ 265,725 $ 39,967 $ 225,758 $ 128,152 $ 39,421 $ 88,731
Amortization Expense Related to Intangible Assets	Amortization expense related to intangible assets at December 31, 2017 in each of the next five fiscal years and beyond is expected to be incurred as follows (in thousands): 2018 $ 1,066 2019 1,053 2020 966 2021 910 2022 734 Thereafter 2,665 $ 7,394

Selected Financial Statement 32

Selected Financial Statement Information (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure Selected Financial Statement Information [Abstract]
Selected Financial Statement Information	December 31, 2017 2016 (In thousands) Accounts receivable, net: Trade accounts receivable $ 114,642 $ 142,932 Allowance for sales returns (15,470 ) (9,341 ) Allowance for doubtful accounts (4,447 ) (5,728 ) $ 94,725 $ 127,863 Inventories: Raw materials $ 67,785 $ 46,451 Work-in-process 868 739 Finished goods 193,833 142,210 $ 262,486 $ 189,400 Property, plant and equipment, net: Land $ 7,322 $ 7,251 Buildings and improvements 71,692 67,945 Machinery and equipment 98,116 110,799 Furniture, computers and equipment 108,706 102,421 Production molds 19,604 19,843 Construction-in-process 10,665 4,724 316,105 312,983 Accumulated depreciation (245,878 ) (258,508 ) $ 70,227 $ 54,475 Accounts payable and accrued expenses: Accounts payable $ 63,204 $ 54,574 Accrued expenses 87,925 57,478 Accrued goods in-transit 24,998 20,469 $ 176,127 $ 132,521 Accrued employee compensation and benefits: Accrued payroll and taxes $ 29,363 $ 23,133 Accrued vacation and sick pay 9,781 8,722 Accrued commissions 1,029 713 $ 40,173 $ 32,568

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Loss Before Income Tax Provision (Benefit)	The Company’s income before income tax provision was subject to taxes in the following jurisdictions for the following periods (in thousands): Years Ended December 31, 2017 2016 (1) 2015 United States $ 50,706 $ 38,268 $ 6,864 Foreign 17,349 20,125 13,199 $ 68,055 $ 58,393 $ 20,063
Expense Benefit for Income Taxes	The expense (benefit) for income taxes is comprised of (in thousands): Years Ended December 31, 2017 2016 (2) 2015 Current tax provision: Federal $ 610 $ 541 $ 271 State 1,259 543 431 Foreign 6,135 7,289 4,393 8,004 8,373 5,095 Deferred tax expense (benefit): Federal 20,746 (129,405 ) (41 ) State (1,127 ) (10,693 ) 113 Foreign (1,235 ) (836 ) 328 18,384 (140,934 ) 400 Income tax provision $ 26,388 $ (132,561 ) $ 5,495 (1) Income before income taxes in 2016 includes a gain of $17,662,000 that was recognized in connection with the sale of preferred shares of the Company's investment in Topgolf. See Note 7 for further discussion. (2) The income tax benefit for 2016 includes the reversal of a significant portion of the valuation allowance on the Company's deferred tax assets in the U.S. See further discussion below.
Components of Deferred Tax Assets and Liabilities	Significant components of the Company’s deferred tax assets and liabilities as of December 31, 2017 and 2016 are as follows (in thousands): December 31, 2017 2016 Deferred tax assets: Reserves and allowances not currently deductible for tax purposes $ 12,783 $ 15,506 Basis difference related to fixed assets 5,946 9,697 Compensation and benefits 7,807 9,273 Basis difference for inventory valuation 1,612 2,100 Compensatory stock options and rights 3,869 5,715 Deferred revenue and other 175 226 Operating loss carryforwards 21,799 75,110 Tax credit carryforwards 62,668 32,730 Basis difference related to intangible assets with a definite life 7,061 13,993 Other 634 389 Total deferred tax assets 124,354 164,739 Valuation allowance for deferred tax assets (11,114 ) (16,515 ) Deferred tax assets, net of valuation allowance $ 113,240 $ 148,224 Deferred tax liabilities: Prepaid expenses (773 ) (1,082 ) Basis difference related to intangible assets with an indefinite life (22,891 ) (34,031 ) Total deferred tax liabilities (23,664 ) (35,113 ) Net deferred tax assets $ 89,576 $ 113,111 Net deferred tax assets (liabilities) are shown on the accompanying consolidated balance sheets as follows: Non-current deferred tax assets $ 91,398 $ 114,707 Non-current deferred tax liabilities (1,822 ) (1,596 ) Net deferred tax assets $ 89,576 $ 113,111
Credit Carryforward Expiry	At December 31, 2017 , the Company had federal and state income tax credit carryforwards of $56,285,000 and $15,499,000 , respectively, which will expire at various dates beginning in 2021 . Such credit carryforwards expire as follows (in thousands): U.S. foreign tax credit $ 46,639 2021 - 2037 U.S. research tax credit $ 9,623 2031 - 2037 U.S. business tax credits $ 23 2031 - 2037 State investment tax credits $ 858 Do not expire State research tax credits $ 14,641 Do not expire
Net Operating Losses Expiry	The Company has recorded a deferred tax asset reflecting the benefit of operating loss carryforwards. The net operating losses expire as follows (in thousands): U.S. loss carryforwards $ 63,493 2032 - 2035 State loss carryforwards $ 124,466 2018 - 2037
Reconciliation of Effective Tax Rate on Income or Loss and Statutory Tax Rate	A reconciliation of the effective tax rate on income or loss and the statutory tax rate is as follows: Years Ended December 31, 2017 2016 2015 Statutory U.S. tax rate 35.0 % 35.0 % 35.0 % State income taxes, net of U.S. tax benefit 2.6 % 3.1 % 3.5 % Federal and State tax credits, net of U.S. tax benefit (4.1 )% (5.0 )% (11.5 )% Foreign income taxed at other than U.S. statutory rate (0.2 )% 1.8 % (2.4 )% Effect of foreign rate changes 0.2 % 0.5 % 0.9 % Foreign tax credit (1.3 )% (11.3 )% (12.0 )% Basis differences of intangibles with an indefinite life 0.1 % 0.1 % 0.1 % Change in deferred tax valuation allowance (1.9 )% (262.4 )% 0.3 % Accrual for interest and income taxes related to uncertain tax positions 2.2 % 2.9 % (0.3 )% Income (loss) from flowthrough entities 1.0 % (0.2 )% (2.0 )% Meals and entertainment 1.1 % 1.5 % 3.4 % Group loss relief (0.6 )% (1.6 )% (3.7 )% Stock option compensation (2.0 )% 0.2 % (1.9 )% Foreign dividends and earnings inclusion 0.7 % 9.9 % 7.1 % Foreign tax withholding 0.9 % 0.6 % 1.4 % Executive compensation limitation 0.5 % 0.7 % 4.3 % Intra-entity asset transfers (6.3 )% — % — % Enactment of the Tax Cuts and Jobs Act 11.1 % — % — % Other (0.2 )% (2.8 )% 5.2 % Effective tax rate 38.8 % (227.0 )% 27.4 %
Reconciliation of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): 2017 2016 2015 Balance at January 1 $ 8,256 $ 7,090 $ 6,559 Additions based on tax positions related to the current year 1,061 969 1,120 Additions for tax positions of prior years 233 542 132 Reductions for tax positions of prior years (192 ) (80 ) (255 ) Settlement of tax audits (33 ) — — Reductions due to lapsed statute of limitations (25 ) (265 ) (466 ) Balance at December 31 $ 9,300 $ 8,256 $ 7,090
Major Jurisdictions No Longer Subject to Income Tax Examinations by Tax Authorities	The Company or one of its subsidiaries files income tax returns in the U.S. federal jurisdiction and various states and foreign jurisdictions. The Company is generally no longer subject to income tax examinations by tax authorities in its major jurisdictions as follows: Major Tax Jurisdiction Years No Longer Subject to Audit U.S. federal 2010 and prior California (U.S.) 2008 and prior Canada 2009 and prior Japan 2010 and prior South Korea 2011 and prior United Kingdom 2013 and prior

Commitments & Contingencies (Ta

Commitments & Contingencies (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments for Minimum Lease Payments Under Non Cancelable Operating Leases	Commitments for minimum lease payments under non-cancelable operating and capital leases as of December 31, 2017 are as follows (in thousands): Operating Leases Capital Leases 2018 $ 8,538 $ 230 2019 8,437 71 2020 7,409 14 2021 6,458 7 2022 6,220 4 Thereafter 17,206 — $ 54,268 $ 326
Future Purchase Commitments	Future purchase commitments as of December 31, 2017 , are as follows (in thousands): 2018 $ 39,338 2019 18,841 2020 8,519 2021 4,093 2022 1,668 $ 72,459

Share-Based Employee Compensa35

Share-Based Employee Compensation (Tables)	12 Months Ended
	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Shares Authorized, Available for Future Grant and Outstanding Under Each Plans	The following table presents shares authorized, available for future grant and outstanding under each of the Company’s plans as of December 31, 2017 : Authorized Available Outstanding (1) (In thousands) 2004 Incentive Plan 33,000 10,875 3,635 2013 Directors Plan 1,000 747 60 Total 34,000 11,622 3,695 (1) Includes 6,000 shares of accrued incremental dividend equivalent rights on outstanding shares underlying restricted stock units granted under the 2004 Incentive Plan and 2013 Directors Plan.
Stock Option Activities	The following table summarizes the Company’s stock option activities for the year ended December 31, 2017 (in thousands, except price per share and contractual term): Options Number of Shares Weighted- Average Exercise Price Per Share Weighted- Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2017 1,783 $ 7.92 Granted — $ — Exercised (681 ) $ 7.87 Forfeited — $ — Expired (122 ) $ 14.37 Outstanding at December 31, 2017 980 $ 7.15 4.44 $ 6,702 Vested and expected to vest in the future at December 31, 2017 980 $ 7.15 4.44 $ 6,701 Exercisable at December 31, 2017 968 $ 7.15 4.43 $ 6,619
Roll-Forward of Activity for Restricted Stock Units	The table below is a roll-forward of the activity for restricted stock units during the 12 months ended December 31, 2017 (in thousands, except fair value amounts): Restricted Stock Units Units Weighted- Average Grant-Date Fair Value Nonvested at January 1, 2017 1,419 $ 8.81 Granted 680 10.94 Vested (797 ) 8.54 Forfeited (26 ) 9.47 Nonvested at December 31, 2017 1 1,276 $ 10.09 (1) Excludes 6,000 shares of accrued incremental dividend equivalent rights on outstanding shares underlying restricted stock units granted under the 2004 Incentive Plan and 2013 Directors Plan.
Roll-Forward of Activity for Performance Share Units	The table below is a roll-forward of the activity for performance share units during the 12 months ended December 31, 2017 (in thousands, except fair value amounts): Performance Share Units Units Weighted- Nonvested at January 1, 2017 1 1,579 $ 8.24 Granted 462 10.68 Vested (566 ) 8.30 Forfeited (42 ) 9.45 Nonvested at December 31, 2017 1,433 $ 9.05 (1) Nonvested performance share units as of January 1, 2017, are comprised of 1,306,000 shares at the target award rate adjusted for shares earned by participants at 130.2% and 131.5% for awards granted in 2015 and 2014
Summary of Total Number of Stock Appreciation Rights Granted	The table below is a roll-forward of the activity for SARs during the 12 months ended December 31, 2017 (in thousands): Stock Appreciation Rights Units Weighted- Nonvested and Outstanding at January 1, 2017 50 $ 6.48 Granted — — Exercised (50 ) 6.48 Forfeited — — Outstanding at December 31, 2017 — $ —
Share-Based Compensation Including Expense for Phantom Stock Units and Cash Settled Stock Appreciation Rights Granted to Employees	The table below summarizes the amounts recognized in the financial statements for the years ended December 31, 2017 , 2016 and 2015 for share-based compensation, including expense for stock options, restricted stock units, performance share units, phantom stock units and cash settled stock appreciation rights (in thousands): 2017 2016 2015 Cost of sales $ 907 $ 704 $ 754 Operating expenses 11,708 8,581 10,466 Total cost of employee share-based compensation included in income before income tax $ 12,615 $ 9,285 $ 11,220

Fair Value of Financial Instr36

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Valuation of Foreign Currency Exchange Contracts by Pricing Levels	The following table summarizes the valuation of the Company’s foreign currency forward contracts (see Note 16 ) that are measured at fair value on a recurring basis as of December 31, 2017 and 2016 (in thousands): Fair Value Level 1 Level 2 Level 3 2017 Foreign currency forward contracts —asset position $ 179 $ — $ 179 $ — Foreign currency forward contracts —liability position (239 ) — (239 ) — $ (60 ) $ — $ (60 ) $ — 2016 Foreign currency forward contracts —asset position $ 3,524 $ — $ 3,524 $ — Foreign currency forward contracts —liability position (85 ) — (85 ) — $ 3,439 $ — $ 3,439 $ —
Fair Value Relating to Financial Assets and Liabilities	The table below illustrates information about fair value relating to the Company’s financial assets and liabilities that are recognized in the accompanying consolidated balance sheets as of December 31, 2017 and 2016 , as well as the fair value of contingent contracts that represent financial instruments (in thousands). December 31, 2017 December 31, 2016 Carrying Value Fair Value Carrying Value Fair Value Primary Asset-Based Revolving Credit Facility (2) $ 74,000 $ 74,000 $ — $ — Japan ABL Facility (2) $ 13,755 $ 13,755 $ 11,966 $ 11,966 Equipment Note (3) $ 11,815 $ 11,815 $ — $ — Standby letters of credit (4) $ 887 $ 887 $ 823 $ 823 Money market funds (5) $ — $ — $ 69,081 $ 69,081 (1) The carrying value of amounts outstanding under the Primary Asset-Based Revolving and the Japan ABL credit facilities approximate the fair value due to the short term nature of these obligations. The fair value of this debt is categorized within Level 2 of the fair value hierarchy. See Note 4 for information on the Company's credit facilities, including certain risks and uncertainties related thereto. (2) In December 2017, the Company entered into the Equipment Note secured by certain equipment at the Company's golf ball manufacturing facility. As of December 31, 2017 , the Company had $11,815,000 outstanding under the Equipment Note. The fair value of this debt is categorized within Level 2 of the fair value hierarchy. See Note 4 for further information. (3) The carrying value of the Company's standby letters of credit approximates the fair value as they represent the Company’s contingent obligation to perform in accordance with the underlying contracts. The fair value of this contingent obligation is categorized within Level 2 of the fair value hierarchy. (4) The carrying value of the money market funds approximates fair value as the funds are highly liquid and short-term in nature. The funds seek to maintain a stable net asset value of $1.00 per share, and the market value per share of these funds are available in active markets. As such, they are categorized within Level 1 of the fair value hierarchy. The money market funds accrued dividends, which were reinvested and reflected in the carrying value as of December 31, 2016. There were no money market funds outstanding as of December 30, 2017.

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Derivative Instruments by Contract Type and Location of Asset and/or Liability on Consolidated Condensed Balance Sheets	The following table summarizes the fair value of the Company's foreign currency forward contracts as well as the location of the asset and/or liability on the consolidated balance sheets at December 31, 2017 and 2016 (in thousands): Asset Derivatives December 31, 2017 December 31, 2016 Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedging instruments: Foreign currency forward contracts Other current assets $ 168 Other current assets $ 2,660 Derivatives not designated as hedging instruments: Foreign currency forward contracts Other current assets $ 11 Other current assets $ 864 Liability Derivatives December 31, 2017 December 31, 2016 Balance Sheet Location Fair Value Balance Sheet Location Fair Value Derivatives designated as cash flow hedging instruments: Foreign currency forward contracts Accounts payable and accrued expenses $ 194 Accounts payable and accrued expenses $ 28 Derivatives not designated as hedging instruments: Foreign currency forward contracts Accounts payable and accrued expenses $ 45 Accounts payable and accrued expenses $ 57
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following tables summarize the net effect of all cash flow hedges on the consolidated financial statements for the year ended December 31, 2017 and 2016 (in thousands): Net Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion) Year Ended December 31, Derivatives designated as cash flow hedging instruments 2017 2016 2015 Foreign currency forward contracts $ (2,679 ) $ (538 ) $ 2,316 Net Gain (Loss) Reclassified from Other Comprehensive Income into Earnings (Effective Portion) Year Ended December 31, Derivatives designated as cash flow hedging instruments 2017 2016 2015 Foreign currency forward contracts $ (187 ) $ (2,514 ) $ 1,791 Net Gain Recognized in Other Income (Expense) (Ineffective Portion) Year Ended December 31, Derivatives designated as cash flow hedging instruments 2017 2016 2015 Foreign currency forward contracts $ — $ — $ 1,149
Location of Gains and Losses in Consolidated Condensed Statements of Operations that were Recognized and Derivative Contract Type	The following table summarizes the location of gains and losses on the consolidated statements of operations that were recognized during the years ended December 31, 2017 , 2016 and 2015 , respectively, in addition to the derivative contract type (in thousands): Amount of Gain (Loss) Recognized in Income on Derivative Instruments Derivatives not designated as hedging instruments Location of gain (loss) recognized in income on derivative instruments Years Ended December 31, 2017 2016 2015 Foreign currency forward contracts Other income (expense), net $ (7,985 ) $ (6,563 ) $ 1,322

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Information Utilized by Management to Evaluate its Operating Segments	The table below contains information utilized by management to evaluate its operating segments. Years Ended December 31, 2017 2016 (1) 2015 (1) (In thousands) Net sales: Golf Clubs $ 643,096 $ 582,381 $ 581,450 Golf Balls 162,546 152,261 143,173 Gear, Accessories and Other 243,094 136,550 119,171 $ 1,048,736 $ 871,192 $ 843,794 Income (loss) before income tax: Golf Clubs $ 77,018 $ 48,489 $ 32,630 Golf Balls 26,854 23,953 18,956 Gear, Accessories and Other 30,631 18,223 19,137 Reconciling items (2) (66,448 ) (32,272 ) (50,660 ) $ 68,055 $ 58,393 $ 20,063 Identifiable assets: (3) Golf Clubs $ 321,265 $ 276,654 $ 295,659 Golf Balls 57,120 45,758 47,884 Gear, Accessories and Other 236,515 35,788 36,429 Reconciling items (3) 376,257 443,082 251,252 $ 991,157 $ 801,282 $ 631,224 Additions to long-lived assets: (4) Golf Clubs $ 11,396 $ 6,163 $ 6,774 Golf Balls 12,178 6,585 7,238 Gear, Accessories and Other 3,790 2,050 2,253 $ 27,364 $ 14,798 $ 16,265 Goodwill: Golf Clubs $ 26,904 $ 25,593 $ 26,500 Golf Balls — — — Gear, Accessories and Other (5) 29,525 — — $ 56,429 $ 25,593 $ 26,500 Depreciation and amortization: Golf Clubs $ 8,769 $ 8,509 $ 8,907 Golf Balls 4,496 4,355 4,566 Gear, Accessories and Other 4,340 3,722 3,906 $ 17,605 $ 16,586 $ 17,379 (1) Prior period amounts have been reclassified to conform to the current year presentation as the result of the change in operating segments as of January 1, 2017. (2) Reconciling items represent the deduction of corporate general and administration expenses and other income (expenses), which are not utilized by management in determining segment profitability. The $34,176,000 increase in reconciling items in 2017 compared to 2016 was primarily due $11,264,000 in one-time transaction and transitional costs associated with the acquisitions of OGIO in January 2017 and TravisMathew in August 2017, a $17,662,000 gain recognized in the second quarter of 2016 in connection with the sale of approximately 10.0% of the Company's investment in Topgolf (see Note 7), combined with increases of $2,286,000 in corporate stock compensation expense and $2,164,000 in interest expense, partially offset by a $4,189,000 increase in foreign currency exchange losses. (3) Identifiable assets are comprised of net inventory, certain property, plant and equipment, intangible assets and goodwill. Reconciling items represent unallocated corporate assets not segregated between the three segments including cash and cash equivalents, net accounts receivable, and deferred tax assets. The $66,825,000 decrease in reconciling items in 2017 compared to 2016 was primarily due Topgolf investment. The $191,830,000 increase in reconciling items in 2016 compared to 2015 was primarily due to a benefit of $156,600,000 related to the reversal of the Company's valuation allowance on its U.S. deferred tax assets. This reversal was partially offset by the recognition of $15,974,000 in income taxes payable on the Company's U.S. business (see Note 10 ). (4) Additions to long-lived assets are comprised of purchases of property, plant and equipment. (5) The $30,836,000 increase in goodwill in 2017 compared to 2016 was primarily as a result of the acquisitions of OGIO and TravisMathew in 2017.
Net Sales By Product Category	The Company’s net sales by product category are as follows: Years Ended December 31, 2017 2016 2015 (In thousands) Net sales: Woods $ 307,865 $ 216,094 $ 222,193 Irons 250,636 278,562 205,522 Putters 84,595 87,725 86,293 Golf Balls 162,546 152,261 143,145 Accessories and Other 243,094 136,550 186,641 $ 1,048,736 $ 871,192 $ 843,794
Revenues and Long Lived Assets	Long-lived assets are based on location of domicile. Sales Long-Lived Assets (1) (In thousands) 2017 United States $ 566,365 $ 403,493 Europe 139,515 7,681 Japan 199,331 7,635 Rest of Asia 76,540 3,717 Other foreign countries 66,985 11,248 $ 1,048,736 $ 433,774 2016 United States $ 447,613 $ 199,617 Europe 122,805 7,260 Japan 170,760 6,201 Rest of Asia 67,099 2,668 Other foreign countries 62,915 10,405 $ 871,192 $ 226,151 2015 United States $ 446,474 $ 205,952 Europe 125,116 8,414 Japan 138,031 4,445 Rest of Asia 70,315 2,868 Other foreign countries 63,858 11,096 $ 843,794 $ 232,775 (1) Long-lived assets include all non-current assets of the Company except deferred tax assets.

Summarized Quarterly Data (Un39

Summarized Quarterly Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Summarized Quarterly Data	Fiscal Year 2017 Quarters 1st 2nd 3rd 4th Total (2) (In thousands, except per share data) Net sales $ 308,927 $ 304,548 $ 243,604 $ 191,657 $ 1,048,736 Gross profit $ 147,715 $ 148,165 $ 104,902 $ 79,666 $ 480,448 Net income (loss) $ 25,880 $ 31,474 $ 3,089 $ (18,776 ) $ 41,667 Less: Net income attributable to non-controlling interests $ 191 $ 31 $ 29 $ 610 $ 861 Net income (loss) attributable to Callaway Golf Company $ 25,689 $ 31,443 $ 3,060 $ (19,386 ) $ 40,806 Earnings (loss) per common share (1) Basic $ 0.27 $ 0.33 $ 0.03 $ (0.20 ) $ 0.43 Diluted $ 0.27 $ 0.33 $ 0.03 $ (0.20 ) $ 0.42 Fiscal Year 2016 Quarters 1st 2nd 3rd 4th (2) Total (2) (In thousands, except per share data) Net sales $ 274,053 $ 245,594 $ 187,850 $ 163,695 $ 871,192 Gross profit $ 132,392 $ 110,633 $ 78,875 $ 63,111 $ 385,011 Net income (loss) $ 38,390 $ 34,105 $ (5,739 ) $ 124,198 $ 190,954 Less: Net income attributable to non-controlling interests $ — $ — $ 127 $ 927 $ 1,054 Net income (loss) attributable to Callaway Golf Company $ 38,390 $ 34,105 $ (5,866 ) $ 123,271 $ 189,900 Earnings (loss) per common share (1) Basic $ 0.41 $ 0.36 $ (0.06 ) $ 1.31 $ 2.02 Diluted $ 0.40 $ 0.36 $ (0.06 ) $ 1.28 $ 1.98 (1) Earnings per share is computed individually for each of the quarters presented; therefore, the sum of the quarterly earnings per share may not necessarily equal the total for the year. (2) During the fourth quarter of 2016, the Company reversed a significant portion of the valuation allowance on its U.S. deferred tax assets. This resulted in a favorable impact to net income of $156,600,000 ( $1.63 per share), partially offset by $15,974,000 ( $0.16 per share) in income taxes that were retroactive for all of 2016 on the Company's U.S. business (see Note 10 ). In addition, net income for 2016 includes a $17,662,000 ( $0.18 per share) pre-tax gain from the sale of approximately 10.0% of the Company's investment in Topgolf (see Note 7 ).

The Company - Additional Inform

The Company - Additional Information (Details)	Dec. 31, 2017country
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of countries in which company operates (more than)	100

Summary of Significant Accoun41

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)segment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Significant Accounting Policies [Line Items]
Number of operating segments | segment	3
Investment in TopGolf International, Inc.	$ 70,495,000	$ 48,997,000
Royalty income under licensing agreements	$ 18,622,000	7,622,000	$ 8,062,000
Standard product warranty term	2 years
Advertising expenses	$ 62,898,000	59,003,000	57,392,000
Research and development expenses	36,568,000	33,318,000	33,213,000
Foreign currency transaction gains (loss), net	(808,000)	(226,000)	1,611,000
Equity adjustment from foreign currency translation	14,361,000	(8,831,000)	(11,542,000)
Total equity adjustment from activity related to derivative instruments	(1,898,000)	1,074,000	525,000
Accumulated Other Comprehensive Income (Loss)
Significant Accounting Policies [Line Items]
Equity adjustment from foreign currency translation	14,198,000	(7,727,000)	(11,542,000)
Total equity adjustment from activity related to derivative instruments	(1,898,000)	1,074,000	$ 525,000
Unredeemed Gift Cards
Significant Accounting Policies [Line Items]
Deferred revenue	971,000	$ 1,273,000
Pro Forma [Member] | Accounting Standards Update 2014-09 | Retained Earnings
Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 11,000,000

Summary of Significant Accoun42

Summary of Significant Accounting Policies - Reconciliation of Activity Related to Allowance for Sales Returns (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 9,341	$ 8,148	$ 8,944
Provision	37,521	38,444	35,746
Sales returns	(31,392)	(37,251)	(36,542)
Ending balance	$ 15,470	$ 9,341	$ 8,148

Summary of Significant Accoun43

Summary of Significant Accounting Policies - Reconciliation of Reserve for Warranty Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Beginning balance	$ 5,395	$ 5,706	$ 5,607
Provision	9,434	5,493	5,220
Claims paid/costs incurred	(8,172)	(5,804)	(5,121)
Ending balance	$ 6,657	$ 5,395	$ 5,706

Summary of Significant Accoun44

Summary of Significant Accounting Policies - Reconciliation of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for Doubtful Accounts Receivable [Roll Forward]
Beginning balance	$ 5,728	$ 5,645
Provision	2,335	2,398	$ 992
Write-off of uncollectible amounts, net of recoveries	(3,616)	(2,315)	(1,807)
Ending balance	$ 4,447	$ 5,728	$ 5,645

Summary of Significant Accoun45

Summary of Significant Accounting Policies - Estimated Useful Lives (Detail)	12 Months Ended
	Dec. 31, 2017
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	30 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Furniture, computers and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Furniture, computers and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Production molds | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	2 years
Production molds | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years

Summary of Significant Accoun46

Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2017USD ($)
Accounting Policies [Abstract]
Goodwill and intangible asset impairment	$ 0

Summary of Significant Accoun47

Summary of Significant Accounting Policies - Share-based Compensation (Details) - Performance shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded as a percentage of granted		130.20%	131.50%
Vesting period	3 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded as a percentage of granted	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares awarded as a percentage of granted	200.00%

Summary of Significant Accoun48

Summary of Significant Accounting Policies - Other Income (Expense) Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accounting Policies [Abstract]
Foreign currency forward contract gain (loss), net	$ (7,688)	$ (2,917)	$ 2,877
Foreign currency transaction gain (loss), net	808	226	(1,611)
Other	9	1,001	199
Other income (expense), net	$ (6,871)	$ (1,690)	$ 1,465

Summary of Significant Accoun49

Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency transaction gain (loss), net	$ 808	$ 226	$ (1,611)
Beginning balance			(796)
Foreign currency translation adjustments	14,198	(7,698)	(11,542)
Change in fair value of derivative instruments	(2,679)	(567)	2,892
Amounts reclassified from accumulated other comprehensive loss to other income (expense) due to hedge instrument ineffectiveness			(576)
Income tax expense (benefit) on derivative instruments	594	(902)	0
Less: Comprehensive income attributable to non-controlling interest	(163)	1,104	0
Accumulated other comprehensive loss	(6,166)	(18,466)	(11,813)
Foreign Exchange Forward | Cost of Goods Sold
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income to cost of goods sold	187	1,500	(1,791)
Foreign Exchange Forward | Sales Revenue, Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income to cost of goods sold		1,014
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,570	525	0
Foreign currency translation adjustments	0	0	0
Change in fair value of derivative instruments	(2,679)	(567)	2,892
Amounts reclassified from accumulated other comprehensive loss to other income (expense) due to hedge instrument ineffectiveness			(576)
Income tax expense (benefit) on derivative instruments	594	(902)
Ending balance	(328)	1,570	525
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Foreign Exchange Forward | Cost of Goods Sold
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income to cost of goods sold	187	1,500	(1,791)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Foreign Exchange Forward | Sales Revenue, Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income to cost of goods sold		1,014
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(20,036)	(12,338)	(796)
Foreign currency translation adjustments	14,198	(7,698)	(11,542)
Change in fair value of derivative instruments	0	0	0
Amounts reclassified from accumulated other comprehensive loss to other income (expense) due to hedge instrument ineffectiveness			0
Income tax expense (benefit) on derivative instruments	0	0
Ending balance	(5,838)	(20,036)	(12,338)
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] | Foreign Exchange Forward | Cost of Goods Sold
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income to cost of goods sold	$ 0	0	$ 0
Accumulated Foreign Currency Adjustment Attributable to Parent [Member] | Foreign Exchange Forward | Sales Revenue, Net
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified from accumulated other comprehensive income to cost of goods sold		$ 0

Summary of Significant Accoun50

Summary of Significant Accounting Policies - Concentration of Risk (Details) - customer	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Percentage of revenues	no single customer represented over 9% of the Company’s outstanding accounts receivable balance.
Sales Revenue, Net | Customer Concentration Risk
Concentration Risk [Line Items]
Threshold used to determine number of major customers	10.00%	8.00%	9.00%
Sales Revenue, Net | Customer Concentration Risk | Regions outside the U.S.
Concentration Risk [Line Items]
Concentration risk percentage	46.00%	49.00%	47.00%
Sales Revenue, Net | Customer Concentration Risk | Top Five Customers Worldwide
Concentration Risk [Line Items]
Concentration risk percentage	21.00%	22.00%	26.00%
Accounts Receivable | Credit Concentration Risk
Concentration Risk [Line Items]
Threshold used to determine number of major customers	9.00%	9.00%
Accounts Receivable | Credit Concentration Risk | Customers With Accounts Receivable Greater Than Nine Percent Of Outstanding Receivables [Member]
Concentration Risk [Line Items]
Number of major customers	0	0
Golf Clubs | Sales Revenue, Net | Customer Concentration Risk | Top Five Customers Worldwide
Concentration Risk [Line Items]
Concentration risk percentage	20.00%	26.00%	28.00%
Golf Ball | Sales Revenue, Net | Customer Concentration Risk | Top Five Customers Worldwide
Concentration Risk [Line Items]
Concentration risk percentage	30.00%	28.00%	30.00%
Gear, Accessories and Other | Sales Revenue, Net | Customer Concentration Risk | Top Five Customers Worldwide
Concentration Risk [Line Items]
Concentration risk percentage	15.00%	18.00%	21.00%

Business Combinations (Details)

Business Combinations (Details) - USD ($)	1 Months Ended		3 Months Ended								12 Months Ended
	Aug. 31, 2017	Jan. 31, 2017	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Aug. 17, 2017	Jan. 11, 2017
Business Acquisition [Line Items]
Net sales			$ 191,657,000	$ 243,604,000	$ 304,548,000	$ 308,927,000	$ 163,695,000	$ 187,850,000	$ 245,594,000	$ 274,053,000	$ 1,048,736,000	$ 871,192,000	$ 843,794,000
Business Acquisition, Pro Forma Revenue											1,086,593,000	964,514,000
Goodwill			56,429,000				25,593,000				56,429,000	25,593,000	26,500,000
Business Acquisition, Transaction Costs			11,264,000								11,264,000
Business Acquisition, Pro Forma Net Income (Loss)											52,514,000	188,117,000
Net Income (Loss) Attributable to Parent			(19,386,000)	$ 3,060,000	$ 31,443,000	$ 25,689,000	$ 123,271,000	$ (5,866,000)	$ 34,105,000	$ 38,390,000	40,806,000	$ 189,900,000	$ 14,568,000
TravisMathew [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents														$ 663,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables														9,715,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory														11,909,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other														549,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment														4,327,000
Goodwill			23,640,000								23,640,000			23,640,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets														135,470,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities														10,892,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net														124,578,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets														117,000
Business Combination, Consideration Transferred	$ 124,578,000
Business Acquisition, Transaction Costs			2,521,000								2,521,000
Net Income (Loss) Attributable to Parent											1,721,000
OGIO International, Inc. [Member]
Business Acquisition [Line Items]
Net sales											66,670,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents															$ 8,061,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables															7,696,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory															7,092,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other															328,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment															2,369,000
Goodwill			5,885,000								5,885,000				5,885,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets															82,781,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities															16,830,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net															65,951,000
Business Combination, Consideration Transferred		$ 65,951,000
Business Acquisition, Transaction Costs			3,052,000								3,052,000
OGIO International, Inc. [Member] | General and Administrative Expense [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs			$ 1,805,000								$ 1,805,000
Trade Names [Member] | TravisMathew [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets														78,400,000
Trade Names [Member] | OGIO International, Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets															49,700,000
Customer Lists [Member] | TravisMathew [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles														4,450,000
Customer Lists [Member] | OGIO International, Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles															1,500,000
Licensing Agreements [Member] | TravisMathew [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles														1,100,000
Noncompete Agreements [Member] | TravisMathew [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles														$ 600,000
Noncompete Agreements [Member] | OGIO International, Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles															$ 150,000
Royalty Savings Income Approach Method [Member] | TravisMathew [Member]
Business Acquisition [Line Items]
Fair Value Inputs, Royalty Rate											8.00%
Fair Value Inputs, Discount Rate											11.00%
Royalty Savings Income Approach Method [Member] | OGIO International, Inc. [Member]
Business Acquisition [Line Items]
Fair Value Inputs, Royalty Rate											7.50%
Fair Value Inputs, Discount Rate											14.00%

Financing Arrangements - Additi

Financing Arrangements - Additional Information (Detail)	1 Months Ended	6 Months Ended	12 Months Ended
	Jan. 31, 2018JPY (¥)loan	Dec. 31, 2015USD ($)shares	Dec. 31, 2017USD ($)shares	Dec. 31, 2016USD ($)shares	Dec. 31, 2015USD ($)	Dec. 31, 2012USD ($)$ / sharesshares	Jan. 31, 2018USD ($)	Dec. 31, 2017JPY (¥)	Dec. 31, 2017USD ($)	Dec. 31, 2014USD ($)
Debt Instrument [Line Items]
Asset-based credit facility				$ 11,966,000					$ 87,755,000
Cash and cash equivalents		$ 49,801,000		125,975,000	$ 49,801,000				85,674,000	$ 37,635,000
Available liquidity				$ 225,216,000					238,884,000
Asset-based credit facility, maximum borrowing capacity									330,000,000
Convertible senior notes						$ 112,500,000
Convertible senior notes interest rate						3.75%
Convertible senior notes convertible latest date			Aug. 15, 2019
Initial conversion rate, number of common stock issuable			0.1333
Maximum number of shares upon conversion of convertible debt (in shares) | shares			0	0		15,000,000
Conversion price per share (in dollars per share) | $ / shares						$ 7.50
Convertible senior notes, transactional fees				$ 0		$ 3,537,000			0
Issuance of shares of common stock to note holders (in shares) | shares		15,000,000
Amortization of debt discount (premium)					108,955,000
Convertible senior notes, unamortized discount		$ 3,395,000			$ 3,395,000
Convertible senior notes, total interest and amortization expense recognized				3,158,000
Equipment note, short-term				0					2,367,000
Equipment note, long-term				0					9,448,000
Bank of America, N.A.
Debt Instrument [Line Items]
Asset-based credit facility									74,000,000
Amount outstanding under letters of credit				823,000					$ 887,000
Average outstanding borrowing			$ 40,657,000
Average available liquidity			$ 118,282,000
Asset-based credit facility, maturity date			Nov. 20, 2022
Restrictions on ability to pay dividends description			In addition, the ABL Facility imposes restrictions on the amount the Company could pay in annual cash dividends, including meeting certain restrictions on the amount of additional indebtedness and requirements to maintain a certain fixed charge coverage ratio under certain circumstances
Period fixed charge cover ratio must be in compliance if borrowing base falls below threshold			30 days
Fixed Charge Coverage Ratio Covenant Reference Borrowing Capacity, Percent			10.00%
Debt instrument fixed charge coverage			$ 33,000,000
Description of condition to reduce applicable margin to interest rate			The applicable margin for any month will be reduced by 0.25% if the Company’s availability ratio is greater than or equal to 67% so long as no default or event of default exists.
Line of credit facility conditional reduction in margin rate								25.00%	25.00%
Asset-based credit facility, interest rate								3.32%	3.32%
Asset-based credit facility, monthly fees			0.25%
Asset-based credit facility, origination fees									$ 2,246,000
Unamortized origination fees				1,297,000					2,197,000
Asset-based credit facility, origination fees included in other current assets				519,000					454,000
Asset-based credit facility, origination fees included in other long-term assets				$ 778,000					1,743,000
The Bank Of Tokyo-Mitsubishi UFG Ltd
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity								¥ 2,000,000,000	17,748,000
Debt instrument term			2 years
United States
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity									260,000,000
Canada
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity									25,000,000
United Kingdom
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity									45,000,000
Letter of Credit | United States
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity									20,000,000
Letter of Credit | Canada
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity									5,000,000
Letter of Credit | United Kingdom
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity									2,000,000
Term Loan Facility | Bank of America, N.A.
Debt Instrument [Line Items]
Maximum excess cash flow payment, percentage of excess cash flow in 2018			50.00%
Maximum excess cash flow payment, amount, in 2018			$ 10,000,000
Excess cash flow payment term (within delivery of 2018 financial statements)			60 days
Asset-based credit facility, maximum borrowing capacity									30,000,000
Asset-based credit facility, monthly fees			0.50%
Stretch Term Loan
Debt Instrument [Line Items]
Asset-based credit facility									0
Line Of Credit Facility, Covenant Terms, Minimum Fixed Charge Coverage Ratio After Minimum Outstanding Threshold Is Met			1.25
Line Of Credit Facility, Covenant Terms, Maximum Leverage Ratio After Minimum Outstanding Threshold Is Met			4
Japan Credit Facility | The Bank Of Tokyo-Mitsubishi UFG Ltd
Debt Instrument [Line Items]
Asset-based credit facility								¥ 1,550,000,000	$ 13,755,000
Asset-based credit facility, interest rate								0.28%	0.28%
Japan Credit Facility | The Bank Of Tokyo-Mitsubishi UFG Ltd | Tokyo Interbank Offered Rate (TIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate on debt			0.25%
Second Japan Credit Facility | The Bank Of Tokyo-Mitsubishi UFG Ltd
Debt Instrument [Line Items]
Asset-based credit facility									$ 0
Asset-based credit facility, maximum borrowing capacity								¥ 1,000,000,000	$ 8,874,000
Asset-based credit facility, interest rate								0.78%	0.78%
Second Japan Credit Facility | The Bank Of Tokyo-Mitsubishi UFG Ltd | Tokyo Interbank Offered Rate (TIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate on debt			0.25%
Subsequent Event | The Bank Of Tokyo-Mitsubishi UFJ
Debt Instrument [Line Items]
Asset-based credit facility, maximum borrowing capacity	¥ 4,000,000,000						$ 36,776,000
Number Of Asset-Based Loans | loan	2
Debt instrument term	3 years
Subsequent Event | The Bank Of Tokyo-Mitsubishi UFJ | Tokyo Interbank Offered Rate (TIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate on debt	0.80%
Maximum | Bank of America, N.A.
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate Reduction Requirements, Availability Ratio								67.00%	67.00%
Line of Credit Facility, Interest Rate Reduction Requirements, Leverage Ratio			4
Real Estate
Debt Instrument [Line Items]
Line Of Credit, Maximum Borrowing Capacity, Quarterly Reduction Period			15 years
Intellectual Property
Debt Instrument [Line Items]
Line Of Credit, Maximum Borrowing Capacity, Quarterly Reduction Period			3 years
Equipment Note | Secured Debt
Debt Instrument [Line Items]
Asset-based credit facility, interest rate								3.79%	3.79%
Debt Instrument, Covenant Compliance, Fixed Charge Coverage Ratio, Periods With Borrowings			1.25
Debt Instrument, Covenant Compliance, Fixed Charge Coverage Ratio, Periods With No Borrowings			1
Long-term Debt									$ 11,815,000
Equipment note, short-term									2,367,000
Equipment note, long-term									$ 9,448,000

Earnings per Common Share - Add

Earnings per Common Share - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands	Apr. 30, 2016	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share Disclosure [Line Items]
Dilutive earnings (loss) per common share (in dollars per share)		$ (0.20)	$ 0.03	$ 0.33	$ 0.27	$ 1.28	$ (0.06)	$ 0.36	$ 0.40	$ 0.42	$ 1.98	$ 0.17
Gain on sale of investments in golf-related ventures								$ 17,662,000		$ 0	$ 17,662,000	$ 0
Percentage of Topgolf preferred shares sold	10.00%
Stock Options
Earnings Per Share Disclosure [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)										129	313	10,812
Convertible Senior Notes
Earnings Per Share Disclosure [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)												10,248
Valuation Allowance of Deferred Tax Assets
Earnings Per Share Disclosure [Line Items]
Increase (decrease) in valuation allowance, deferred tax asset						$ 156,600,000					$ (156,600,000)
Dilutive earnings (loss) per common share (in dollars per share)						$ 1.63
Cost-method Investments
Earnings Per Share Disclosure [Line Items]
Dilutive earnings (loss) per common share (in dollars per share)	$ 0.18
Gain on sale of investments in golf-related ventures	$ 17,662,000
U.S. federal
Earnings Per Share Disclosure [Line Items]
Dilutive earnings (loss) per common share (in dollars per share)						$ 0.16
Impact to net income, amount offset due to recognition of income taxes						$ 15,974,000				$ 15,974,000

Earnings per Common Share - Com

Earnings per Common Share - Computation of Basic and Diluted Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Equity [Abstract]
Net income attributable to Callaway Golf Company	$ (19,386)	$ 3,060	$ 31,443	$ 25,689	$ 123,271	$ (5,866)	$ 34,105	$ 38,390	$ 40,806	$ 189,900	$ 14,568
Weighted-average common shares outstanding—basic (in shares)									94,329	94,045	83,116
Basic earnings per common share (in dollars per share)	$ (0.20)	$ 0.03	$ 0.33	$ 0.27	$ 1.31	$ (0.06)	$ 0.36	$ 0.41	$ 0.43	$ 2.02	$ 0.18
Options and restricted stock (in shares)									2,248	1,800	1,495
Weighted-average common shares outstanding—diluted (in shares)									96,577	95,845	84,611
Dilutive earnings (loss) per common share (in dollars per share)	$ (0.20)	$ 0.03	$ 0.33	$ 0.27	$ 1.28	$ (0.06)	$ 0.36	$ 0.40	$ 0.42	$ 1.98	$ 0.17

Goodwill and Intangible Asset55

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Aug. 17, 2017	Jan. 11, 2017
Business Acquisition [Line Items]
Goodwill	$ 56,429	$ 25,593	$ 26,500
Decrease in goodwill offset amount due to foreign currency fluctuations	1,311
Aggregate amortization expense on intangible assets	546	$ 71	$ 51
OGIO International, Inc. [Member]
Business Acquisition [Line Items]
Goodwill	5,885				$ 5,885
TravisMathew [Member]
Business Acquisition [Line Items]
Goodwill	$ 23,640			$ 23,640

Goodwill and Intangible Asset56

Goodwill and Intangible Assets - Intangible Assets by Major Asset Class (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Intangible Assets by Major Class [Line Items]
Gross	$ 265,725	$ 128,152
Accumulated amortization	39,967	39,421
Net book value	225,758	88,731
Trade name, trademark and trade dress and other
Intangible Assets by Major Class [Line Items]
Gross	218,364	88,590
Net book value	218,364	88,590
Patents
Intangible Assets by Major Class [Line Items]
Gross	31,581	31,581
Accumulated amortization	31,491	31,440
Net book value	$ 90	141
Patents | Minimum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	2 years
Patents | Maximum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	16 years
Developed technology and other
Intangible Assets by Major Class [Line Items]
Gross	$ 15,780	7,981
Accumulated amortization	8,476	7,981
Net book value	$ 7,304	$ 0
Developed technology and other | Minimum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	1 year
Developed technology and other | Maximum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	9 years

Goodwill and Intangible Asset57

Goodwill and Intangible Assets - Amortization Expense Related to Intangible Assets (Detail) $ in Thousands	Dec. 31, 2017USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2,018	$ 1,066
2,019	1,053
2,020	966
2,021	910
2,022	734
Thereafter	2,665
Total	$ 7,394

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2016	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Cost-method Investments [Line Items]
Investment in TopGolf International, Inc. during the period			$ 21,499,000	$ 1,448,000	$ 940,000
Investment in TopGolf International, Inc.			70,495,000	48,997,000
Notes receivable from TopGolf				$ 3,200,000
Annual Interest Rate on notes receivable				10.00%
Percentage of Topgolf preferred shares sold	10.00%
Reduction in total investment in Topgolf	$ 5,767,000		(20,000,000)
Proceeds from sale of investments in golf-related ventures	$ 23,429,000		0	$ 23,429,000	0
Gain on sale of preferred shares in Topgolf		$ 17,662,000	$ 0	$ 17,662,000	$ 0
Percentage of ownership interest in TopGolf International, Inc.			14.00%

Joint Venture - Additional Info

Joint Venture - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Jul. 01, 2016
Noncontrolling Interest [Line Items]
Net income attributable to noncontrolling interests	$ 610	$ 29	$ 31	$ 191	$ 927	$ 127	$ 0	$ 0	$ 861	$ 1,054	$ 0
Dividend paid by joint venture to TSI									974
Stockholders' equity attributable to noncontrolling interest	$ 9,744				$ 9,694				$ 9,744	$ 9,694
Callaway Apparel K.K.
Noncontrolling Interest [Line Items]
Ownership percentage by parent												52.00%
Ownership percentage by noncontrolling owners												48.00%
Callaway Golf Company
Noncontrolling Interest [Line Items]
Noncontrolling interest in joint ventures												$ 10,556
TSI Groove & Sports Co, Ltd.
Noncontrolling Interest [Line Items]
Noncontrolling interest in joint ventures												$ 9,744

Selected Financial Statement 60

Selected Financial Statement Information - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounts receivable, net:
Trade accounts receivable	$ 114,642	$ 142,932
Allowance for sales returns	(15,470)	(9,341)	$ (8,148)	$ (8,944)
Allowance for doubtful accounts	(4,447)	(5,728)	$ (5,645)		$ (6,460)
Accounts receivable, net	94,725	127,863
Inventories:
Raw materials	67,785	46,451
Work-in-process	868	739
Finished goods	193,833	142,210
Inventory	262,486	189,400
Property, plant and equipment, net:
Land	7,322	7,251
Buildings and improvements	71,692	67,945
Machinery and equipment	98,116	110,799
Furniture, computers and equipment	108,706	102,421
Production molds	19,604	19,843
Construction-in-process	10,665	4,724
Property, plant and equipment, gross	316,105	312,983
Accumulated depreciation	(245,878)	(258,508)
Property, plant and equipment, net	70,227	54,475
Accounts payable and accrued expenses:
Accounts payable	63,204	54,574
Accrued expenses	87,925	57,478
Accrued goods in-transit	24,998	20,469
Accounts payable and accrued expenses	176,127	132,521
Accrued employee compensation and benefits:
Accrued payroll and taxes	29,363	23,133
Accrued vacation and sick pay	9,781	8,722
Accrued commissions	1,029	713
Accrued employee compensation and benefits	$ 40,173	$ 32,568

Income Taxes - Income (Loss) Be

Income Taxes - Income (Loss) Before Income Tax Provision (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
United States	$ 50,706	$ 38,268	$ 6,864
Foreign	17,349	20,125	13,199
Income before income taxes	$ 68,055	$ 58,393	$ 20,063

Income Taxes - Expense (Benefit

Income Taxes - Expense (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current tax provision:
Federal	$ 610	$ 541	$ 271
State	1,259	543	431
Foreign	6,135	7,289	4,393
Current tax provision (benefit)	8,004	8,373	5,095
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	20,746	(129,405)	(41)
State	(1,127)	(10,693)	113
Foreign	(1,235)	(836)	328
Deferred tax expense (benefit)	18,384	(140,934)	400
Income tax provision	$ 26,388	$ (132,561)	$ 5,495

Income Taxes - Components of De

Income Taxes - Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Reserves and allowances not currently deductible for tax purposes	$ 12,783	$ 15,506
Basis difference related to fixed assets	5,946	9,697
Compensation and benefits	7,807	9,273
Basis difference for inventory valuation	1,612	2,100
Compensatory stock options and rights	3,869	5,715
Deferred revenue and other	175	226
Operating loss carryforwards	21,799	75,110
Tax credit carryforwards	62,668	32,730
Basis difference related to intangible assets with a definite life	7,061	13,993
Other	634	389
Total deferred tax assets	124,354	164,739
Valuation allowance for deferred tax assets	(11,114)	(16,515)
Deferred tax assets, net of valuation allowance	113,240	148,224
Deferred tax liabilities:
Prepaid expenses	(773)	(1,082)
Basis difference related to intangible assets with an indefinite life	(22,891)	(34,031)
Total deferred tax liabilities	(23,664)	(35,113)
Net deferred tax assets	89,576	113,111
Net deferred tax assets are shown on the accompanying consolidated balance sheets as follows:
Non-current deferred tax assets	91,398	114,707
Non-current deferred tax liabilities	$ (1,822)	$ (1,596)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	Apr. 30, 2016	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2013
Schedule Of Income Tax [Line Items]
Gain on sale of investments in golf-related ventures		$ 17,662,000	$ 0	$ 17,662,000	$ 0
Change in net deferred taxes			23,535,000
Deferred tax assets, valuation allowance			$ 11,114,000	16,515,000
Tax credit carryforward beginning expiration year			2,021
Liability for income taxes associated with uncertain tax positions			$ 9,300,000	8,256,000	7,090,000	$ 6,559,000
Tax benefits associated with potential transfer pricing adjustments			1,360,000
Tax benefits associated with state income taxes and other timing adjustments			6,317,000
Net amount of unrecognized tax benefit related to uncertain tax positions that would impact, if recognized, effective income tax rate			1,623,000
Interest and penalties related to income tax matters			301,000	258,000	$ (2,000)
Income tax accrued for payment of interest and penalties			1,618,000	$ 1,317,000
Undistributed earnings			118,700,000
Operating Loss Carryforwards Utilized			72,800,000
Decrease To Deferred Tax Assets, Operating Loss Carryforwards			25,500,000
Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Transition Tax On Accumulated Foreign Earnings, Amount			3,600,000
Tax Cuts And Jobs Act of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Benefit)			11,174,000
Tax Cuts And Jobs Act of 2017, Incomplete Accounting, Transition Tax For Accumulated Foreign Earnings, Provisional Income Tax Expense (Benefit)			$ 3,638,000
Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Transition Tax On Accumulated Foreign Earnings, Percent			5.20%
U.S. federal
Schedule Of Income Tax [Line Items]
Tax credit carryforwards			$ 56,285,000
California (U.S.)
Schedule Of Income Tax [Line Items]
Tax credit carryforwards			15,499,000
Cost-method Investments
Schedule Of Income Tax [Line Items]
Gain on sale of investments in golf-related ventures	$ 17,662,000
U.S. Foreign Tax Credit | U.S. federal
Schedule Of Income Tax [Line Items]
Tax credit carryforwards			46,639,000
Tax Credit Carryforward, Period Increase (Decrease), Amount			29,100,000
Tax Cuts and Jobs Act of 2017, Transition Tax for Accumulated Foreign Earnings, Deferred Tax Asset, Noncurrent			$ 29,100,000

Income Taxes - Expiry Dates of

Income Taxes - Expiry Dates of Federal and State Income Tax Credit Carryforwards (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
U.S. federal
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 56,285
U.S. federal | U.S. Foreign Tax Credit
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 46,639
U.S. federal | U.S. Foreign Tax Credit | Minimum
Tax Credit Carryforward [Line Items]
Tax credit carryforwards, expiration year	2,021
U.S. federal | U.S. Foreign Tax Credit | Maximum
Tax Credit Carryforward [Line Items]
Tax credit carryforwards, expiration year	2,026
U.S. federal | U.S. research tax credit
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 9,623
U.S. federal | U.S. research tax credit | Minimum
Tax Credit Carryforward [Line Items]
Tax credit carryforwards, expiration year	2,031
U.S. federal | U.S. research tax credit | Maximum
Tax Credit Carryforward [Line Items]
Tax credit carryforwards, expiration year	2,036
U.S. federal | U.S. business tax credits
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 23
U.S. federal | U.S. business tax credits | Minimum
Tax Credit Carryforward [Line Items]
Tax credit carryforwards, expiration year	2,031
U.S. federal | U.S. business tax credits | Maximum
Tax Credit Carryforward [Line Items]
Tax credit carryforwards, expiration year	2,036
California (U.S.)
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 15,499
California (U.S.) | State investment tax credits
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	858
California (U.S.) | State research tax credits
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 14,641

Income Taxes - Net Operating Lo

Income Taxes - Net Operating Losses Carryforwards Expire (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Operating Loss Carryforwards [Line Items]
U.S. loss carryforwards	$ 63,493
State loss carryforwards	$ 124,466
U.S. federal | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2,032
U.S. federal | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2,035
California (U.S.) | Minimum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2,017
California (U.S.) | Maximum
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration year	2,036

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Tax Rate on Income or Loss and Statutory Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Statutory U.S. tax rate	35.00%	35.00%	35.00%
State income taxes, net of U.S. tax benefit	2.60%	3.10%	3.50%
Federal and State tax credits, net of U.S. tax benefit	(4.10%)	(5.00%)	(11.50%)
Foreign income taxed at other than U.S. statutory rate	(0.20%)	1.80%	(2.40%)
Effect of foreign rate changes	0.20%	0.50%	0.90%
Foreign tax credit	(1.30%)	(11.30%)	(12.00%)
Basis differences of intangibles with an indefinite life	0.10%	0.10%	0.10%
Change in deferred tax valuation allowance	(1.90%)	(262.40%)	0.30%
Accrual for interest and income taxes related to uncertain tax positions	2.20%	2.90%	(0.30%)
Income (loss) from flowthrough entities	1.00%	(0.20%)	(2.00%)
Meals and entertainment	1.10%	1.50%	3.40%
Group loss relief	(0.60%)	(1.60%)	(3.70%)
Stock option compensation	(2.00%)	0.20%	(1.90%)
Foreign dividends and earnings inclusion	0.70%	9.90%	7.10%
Foreign tax withholding	0.90%	0.60%	1.40%
Executive compensation limitation	0.50%	0.70%	4.30%
Effective Income Tax Rate Reconciliation, Intra-Entity Asset Transfer, Percent	(6.30%)	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Tax Cuts And Jobs Act Of 2017, Percent	11.10%	0.00%	0.00%
Other	(0.20%)	(2.80%)	5.20%
Effective tax rate	38.80%	(227.00%)	27.40%

Income Taxes - Reconciliation68

Income Taxes - Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1	$ 8,256	$ 7,090
Additions based on tax positions related to the current year	1,061	969	$ 1,120
Additions for tax positions of prior years	233	542	132
Reductions for tax positions of prior years	(192)	(80)	(255)
Settlement of tax audits	(33)	0	0
Reductions due to lapsed statute of limitations	(25)	(265)	(466)
Balance at December 31	$ 9,300	$ 8,256	$ 7,090

Income Taxes - Major Jurisdicti

Income Taxes - Major Jurisdictions no Longer Subject to Income Tax Examinations by Tax Authorities (Detail)	12 Months Ended
	Dec. 31, 2017
U.S. federal
Income Tax Examination [Line Items]
Years No Longer Subject to Audit	2010 and prior
California (U.S.)
Income Tax Examination [Line Items]
Years No Longer Subject to Audit	2008 and prior
Canada
Income Tax Examination [Line Items]
Years No Longer Subject to Audit	2009 and prior
Japan
Income Tax Examination [Line Items]
Years No Longer Subject to Audit	2010 and prior
South Korea
Income Tax Examination [Line Items]
Years No Longer Subject to Audit	2011 and prior
United Kingdom
Income Tax Examination [Line Items]
Years No Longer Subject to Audit	2013 and prior

Commitments & Contingencies - A

Commitments & Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Long-term Purchase Commitment [Line Items]
Operating lease expiration period	2025-12
Rent expense	$ 16,382,000	$ 13,516,000	$ 13,245,000
Minimum rental payments under capital leases	326,000
Minimum rental payments under operating leases	54,268,000
Minimal rental payments under operating leases, net of sublease payments	690,000
Unconditional purchase obligations over next six years	$ 72,459,000
Minimum
Long-term Purchase Commitment [Line Items]
Operating lease term	1 year
Unconditional purchase obligations	1 year
Maximum
Long-term Purchase Commitment [Line Items]
Operating lease term	10 years
Unconditional purchase obligations	5 years

Commitments & Contingencies - C

Commitments & Contingencies - Commitments for Minimum Lease Payments Under Non Cancelable Operating Leases (Detail)	Dec. 31, 2017USD ($)
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,018	$ 8,538,000
2,019	8,437,000
2,020	7,409,000
2,021	6,458,000
2,022	6,220,000
Thereafter	17,206,000
Minimum rental payments under operating leases	54,268,000
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,018	230,000
2,019	71,000
2,020	14,000
2,021	7,000
2,022	4,000
Thereafter	0
Minimum rental payments under capital leases	$ 326,000

Commitments & Contingencies - F

Commitments & Contingencies - Future Purchase Commitments (Detail)	Dec. 31, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,018	$ 39,338,000
2,019	18,841,000
2,020	8,519,000
2,021	4,093,000
2,022	1,668,000
Unconditional purchase obligations over next six years	$ 72,459,000

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017USD ($)Vote$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)shares	Aug. 31, 2014USD ($)
Components Of Common Stock [Line Items]
Authorized capital, shares (in shares) | shares	243,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Common stock, shares authorized (in shares) | shares	240,000,000	240,000,000
Preferred stock, shares authorized (in shares) | shares	3,000,000	3,000,000
Common stock, voting rights description	The holders of common stock are entitled to one vote for each share of common stock on all matters submitted to a vote of the Company’s shareholders.
Common stock, votes per share | Vote	1
Stock repurchase program, authorized amount | $				$ 50,000,000
Stock repurchased, average cost per share (in dollars per share) | $ / shares	$ 10.82
Acquisition of treasury stock | $	$ 16,617,000	$ 5,144,000	$ 1,960,000
Shares Paid for Tax Withholding for Share Based Compensation, Value | $	6,617,000
Amount remaining under repurchase authorization | $	$ 25,266,000
Treasury Stock
Components Of Common Stock [Line Items]
Acquisition of treasury stock (in shares) | shares	1,536,000	572,000	217,000
Acquisition of treasury stock | $	$ 16,617,000	$ 5,144,000	$ 1,960,000
Seriesa Junior Participating Preferred
Components Of Common Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares	240,000
Preferred stock, voting rights description	each share of Series A Junior Participating Preferred Stock would entitle the holder thereof to 1,000 votes on all matters submitted to a vote of the shareholders of the Company
Preferred stock, votes per share | Vote	1,000

Share-Based Employee Compensa74

Share-Based Employee Compensation - Additional Information (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)plan$ / sharesshares	Dec. 31, 2016USD ($)$ / sharesshares	Dec. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans | plan	2
Authorized (in shares) | shares	34,000,000
Compensation expense related to stock options	$ 34	$ 146	$ 1,396
Share based compensation, weighted average estimated forfeiture rate	1.70%	3.70%	6.20%
Number of shares granted (in shares) | shares	0	0	0
Total intrinsic value for options exercised	$ 3,546	$ 1,005	$ 2,151
Exercise of stock options	5,362	2,637	6,565
Compensation expense related to restricted stock	5,537	4,283	3,539
Stock compensation - expensed (reversed)	12,615	9,285	$ 11,220
Accrued employee compensation and benefits	$ 40,173	$ 32,568
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accrued incremental dividend equivalent rights (in shares) | shares	6,000
Total unrecognized compensation expense related to non-vested shares granted	$ 8,692
Unrecognized compensation expense expected recognition period	2 years 4 months 28 days
Weighted average grant date fair value per share of PSUs granted (in dollars per unit) | $ / shares	$ 10.94	$ 9.36	$ 8.33
Number of units granted (in units) | shares	680,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Expiration period	10 years
Total unrecognized compensation expense related to non-vested shares granted	$ 14
Unrecognized compensation expense expected recognition period	5 months 1 day
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Total unrecognized compensation expense related to non-vested shares granted	$ 9,083
Unrecognized compensation expense expected recognition period	1 year 2 months 1 day
Weighted average grant date fair value per share of PSUs granted (in dollars per unit) | $ / shares	$ 10.68	$ 8.61	$ 7.96
Award requisite service period	3 years	1 year	1 year
Shares awarded as a percentage of granted			130.20%	131.50%
Number of units granted (in units) | shares	462,000	420,000	510,000
Stock compensation - expensed (reversed)	$ 7,075	$ 4,536	$ 2,607
Phantom Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units granted (in units) | shares	0	0	0
Stock compensation - expensed (reversed)			$ 390
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Weighted average grant date fair value per share of PSUs granted (in dollars per unit) | $ / shares	$ 0
Number of units granted (in units) | shares	0
Stock compensation - expensed (reversed)	$ (32)	$ 320	$ 3,288
Accrued employee compensation and benefits	$ 0	$ 224
Minimum | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Minimum | Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	1 year
Shares awarded as a percentage of granted	0.00%
Maximum | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Maximum | Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Shares awarded as a percentage of granted	200.00%
2004 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee | shares	2,000,000
2004 Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized (in shares) | shares	33,000,000
2013 Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares per employee | shares	50,000
2013 Directors Plan | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized (in shares) | shares	1,000,000

Share-Based Employee Compensa75

Share-Based Employee Compensation - Shares Authorized, Available for Future Grant and Outstanding Under Each Plans (Detail)	Dec. 31, 2017shares
Equity Incentive Plan [Line Items]
Authorized (in shares)	34,000,000
Available (in shares)	11,622,000
Outstanding (in shares)	3,695,000
2004 Plan
Equity Incentive Plan [Line Items]
Authorized (in shares)	33,000,000
Available (in shares)	10,875,000
Outstanding (in shares)	3,635,000
2013 Directors Plan
Equity Incentive Plan [Line Items]
Authorized (in shares)	1,000,000
Available (in shares)	747,000
Outstanding (in shares)	60,000

Share-Based Employee Compensa76

Share-Based Employee Compensation - Stock Option Activities (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Shares
Number of Shares, Options outstanding, beginning balance	1,783,000
Number of Shares, Granted	0	0	0
Number of shares, Exercised	(681,000)
Number of Shares, Forfeited	0
Number of Shares, Expired	(122,000)
Number of Shares, Options outstanding, ending balance	980,000	1,783,000
Number of Shares, Vested and expected to vest at end of period	980,000
Number of Shares, Options exercisable at end of period	968,000
Weighted-Average Exercise Price Per Share
Weighted Average Exercise Price, Options outstanding, beginning balance (in dollars per share)	$ 7.92
Weighted Average Exercise Price, Granted (in dollars per share)	0
Weighted Average Exercise Price, Exercised (in dollars per share)	7.87
Weighted Average Exercise Price, Forfeited (in dollars per share)	0
Weighted Average Exercise Price, Expired (in dollars per share)	14.37
Weighted Average Exercise Price, Options outstanding, ending balance (in dollars per share)	7.15	$ 7.92
Weighted Average Exercise Price, Vested and expected to vest at end of period (in dollars per share)	7.15
Weighted Average Exercise Price, Options exercisable at end of period (in dollars per share)	$ 7.15
Weighted-Average Remaining Contractual Term
Weighted Average Remaining Life, Options outstanding at end of period	4 years 5 months 8 days
Weighted Average Remaining Life, Vested and expected to vest at end of period	4 years 5 months 8 days
Weighted Average Remaining Life, Options exercisable at end of period	4 years 5 months 6 days
Aggregate Intrinsic Value
Outstanding aggregate intrinsic value	$ 6,702
Vested and expected to vest in the future, aggregate intrinsic value	6,701
Exercisable, aggregate intrinsic value	$ 6,619

Share-Based Employee Compensa77

Share-Based Employee Compensation - Roll-Forward of Activity for Restricted Stock Units (Detail) - Restricted Stock Units - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Number of Share units
Nonvested number of Units, beginning balance	1,419
Granted, number of units	680
Vested, number of units	(797)
Forfeited, number of units	(26)
Nonvested number of units, ending balance	1,276	1,419
Weighted Average Grant Date Fair Value
Nonvested weighted Average Grant Date Fair Value, beginning balance (in dollars per unit)	$ 8.81
Granted, weighted average grant date fair value (in dollars per unit)	10.94	$ 9.36	$ 8.33
Vested, weighted average grant date fair value (in dollars per units)	8.54
Forfeited, weighted average grant date fair value (in dollars per unit)	9.47
Nonvested weighted Average Grant Date Fair Value, ending balance (in dollars per unit)	$ 10.09	$ 8.81
Accrued incremental dividend equivalent rights (in shares)	6

Share-Based Employee Compensa78

Share-Based Employee Compensation - Roll-Forward of Activity for Performance Share Units (Details) - Performance shares - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Target Award Achieved, Shares	1,306
Number of Share units
Nonvested number of Units, beginning balance	1,579
Granted, number of units	462	420	510
Vested, number of units	(566)
Forfeited, number of units	(42)
Nonvested, Number of Shares, Ending Balance	1,433
Weighted Average Grant Date Fair Value
Nonvested weighted Average Grant Date Fair Value, beginning balance (in dollars per unit)	$ 8.24
Granted, weighted average grant date fair value (in dollars per unit)	10.68	$ 8.61	$ 7.96
Vested, weighted average grant date fair value (in dollars per units)	8.30
Forfeited, weighted average grant date fair value (in dollars per unit)	9.45
Nonvested weighted Average Grant Date Fair Value, ending balance (in dollars per unit)	$ 9.05	$ 8.24
Award requisite service period	3 years	1 year	1 year
Minimum
Weighted Average Grant Date Fair Value
Award requisite service period	1 year
Target award shares percent	50.00%
Maximum
Weighted Average Grant Date Fair Value
Award requisite service period	3 years
Target award shares percent	80.00%

Share-Based Employee Compensa79

Share-Based Employee Compensation - Summary of Total Number of SARs Granted (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Schedule of Share based Compensation Arrangements by Share based Payment Award, Performance Options [Line Items]
Allocated Share-based Compensation Expense	$ 12,615	$ 9,285	$ 11,220
Stock Appreciation Rights (SARs)
Schedule of Share based Compensation Arrangements by Share based Payment Award, Performance Options [Line Items]
Allocated Share-based Compensation Expense	$ (32)	$ 320	$ 3,288
Number of Share units
Nonvested number of Units, beginning balance	50
Granted, number of units	0
Exercised, number of units	(50)
Forfeited, number of units	0
Vested, number of units, ending balance	0
Weighted Average Grant Date Fair Value
Nonvested weighted Average Grant Date Fair Value, beginning balance (in dollars per unit)	$ 6.48
Granted, weighted average grant date fair value (in dollars per unit)	0
Exercised, weighted average exercise price (in dollars per unit)	6.48
Forfeited, weighted average grant date fair value (in dollars per unit)	0
Vested, Weighted Average Grant Date Fair Value, ending balance (in dollars per unit)	$ 0

Share-Based Employee Compensa80

Share-Based Employee Compensation - Share-Based Compensation Related to Employees and Directors (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of employee share-based compensation included in income (loss), before income tax	$ 12,615	$ 9,285	$ 11,220
Cost of sales
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of employee share-based compensation included in income (loss), before income tax	907	704	754
Operating expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of employee share-based compensation included in income (loss), before income tax	$ 11,708	$ 8,581	$ 10,466

Employee Benefit Plan - Additio

Employee Benefit Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Maximum employee contribution to defined contribution benefit plans	75.00%
Employer matching contribution, percentage	50.00%
Employer matching contribution, percentage of employees' gross pay	6.00%
Discretionary contributions by employer		$ 0	$ 0
Defined contribution plan employee vesting percentage	100.00%
Defined contribution plan employer vesting percentage	50.00%
Number of years of service required to vest in full	2 years
Employer contribution towards compensation plan	$ 1,927,000	$ 1,842,000	$ 1,744,000

Fair Value of Financial Instr82

Fair Value of Financial Instruments - Foreign Currency Exchange Contracts Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - Foreign Currency Forward Contracts - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency forward contracts —asset position	$ 179	$ 3,524
Foreign currency forward contracts —liability position	(239)	(85)
Total foreign currency derivative instruments	(60)	3,439
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency forward contracts —asset position	179	3,524
Foreign currency forward contracts —liability position	(239)	(85)
Total foreign currency derivative instruments	$ (60)	$ 3,439

Fair Value of Financial Instr83

Fair Value of Financial Instruments - Fair Value Relating to Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	$ 11,815	$ 0
Cash and Cash Equivalents, Fair Value Disclosure	0	69,081
Carrying Value | ABL Facility [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	74,000	0
Carrying Value | Japan ABL Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	13,755	11,966
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	11,815	0
Cash and Cash Equivalents, Fair Value Disclosure	0	69,081
Fair Value | ABL Facility [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	74,000	0
Fair Value | Japan ABL Facility
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	13,755	11,966
Bank of America, N.A.
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Standby letters of credit, carrying value	887	823
Bank of America, N.A. | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Standby letters of credit, carrying value		823
Bank of America, N.A. | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Standby letters of credit, carrying value	$ 887	$ 823

Derivatives and Hedging - Summa

Derivatives and Hedging - Summary of Fair Value of Derivative Instruments by Contract Type and Location of Asset and/or Liability on Consolidated Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Other current assets
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts, asset derivatives designated as hedging instruments, fair value	$ 168	$ 2,660
Foreign currency forward contracts, asset derivatives not designated as hedging instruments, fair value	11	864
Accounts payable and accrued expenses
Derivatives, Fair Value [Line Items]
Foreign currency forward contracts, liability derivatives designated as hedging instruments, fair value	194	28
Foreign currency exchange contracts, liability derivatives not designated as hedging instruments, fair value	$ 45	$ 57

Derivatives and Hedging - Addit

Derivatives and Hedging - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	$ 2,679,000
Ineffective gains (losses) recognized	0
Gain (loss) from components excluded from assessment of cash flow hedge effectiveness, net		$ 576,000
Forward points expensed on derivatives		287,000
Net losses from accumulated other comprehensive income (loss) into net earnings during the next 12 months	$ 20,000
Maximum remaining maturity of foreign currency derivatives	12 months
Effect of Cash Flow Hedges on Results of Operations [Abstract]
Net Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	$ 2,679,000
Net Gain Recognized in Other Income (Expense) (Ineffective Portion)	0
Foreign Currency Forward Contracts
Derivative [Line Items]
Derivative notional amount	4,821,000	14,821,000	$ 43,098,000
Foreign Currency Forward Contracts | Designated as Hedging Instrument
Derivative [Line Items]
Derivative notional amount	14,210,000	55,938,000
Foreign Exchange Forward | Cost of Goods Sold
Derivative [Line Items]
Gain reclassified from AOCI into cost of goods	187,000
Foreign Exchange Forward | Other Income (Expense)
Derivative [Line Items]
Gain (loss) on foreign currency cash flow hedge ineffectiveness		1,149,000
Foreign Exchange Forward | Designated as Hedging Instrument | Cash Flow Hedging
Derivative [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	(2,679,000)	(538,000)	2,316,000
Ineffective gains (losses) recognized	0	0	1,149,000
Effect of Cash Flow Hedges on Results of Operations [Abstract]
Net Gain (Loss) Recognized in Other Comprehensive Income (Effective Portion)	(2,679,000)	(538,000)	2,316,000
Net Gain (Loss) Reclassified from Other Comprehensive Income into Earnings (Effective Portion)	(187,000)	(2,514,000)	1,791,000
Net Gain Recognized in Other Income (Expense) (Ineffective Portion)	$ 0	$ 0	$ 1,149,000
Minimum
Derivative [Line Items]
Maximum length of time, foreign currency cash flow hedge	12 years
Maximum
Derivative [Line Items]
Maximum length of time, foreign currency cash flow hedge	15 years

Derivatives and Hedging - Locat

Derivatives and Hedging - Location of Gains and Losses in Consolidated Condensed Statements of Operations that were Recognized and Derivative Contract Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency exchange contracts, amount of gain (loss) recognized in income on derivatives not designated as hedging instruments	$ (7,688)	$ (2,917)	$ 2,877
Foreign currency transaction gains (loss), net	808	226	(1,611)
Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Foreign currency exchange contracts, amount of gain (loss) recognized in income on derivatives not designated as hedging instruments	$ (7,985)	$ (6,563)	$ 1,322

Segment Information - Informati

Segment Information - Information Utilized by Management to Evaluate Operating Segments (Detail)	3 Months Ended								12 Months Ended
	Dec. 31, 2017USD ($)	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)segment	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Apr. 30, 2016
Segment Reporting [Abstract]
Number of operating segments | segment									3
Segment Reporting Information [Line Items]
Net sales	$ 191,657,000	$ 243,604,000	$ 304,548,000	$ 308,927,000	$ 163,695,000	$ 187,850,000	$ 245,594,000	$ 274,053,000	$ 1,048,736,000	$ 871,192,000	$ 843,794,000
Income (loss) before income taxes									68,055,000	58,393,000	20,063,000
Identifiable assets	991,157,000				801,282,000				991,157,000	801,282,000	631,224,000
Additions to long-lived assets									27,364,000	14,798,000	16,265,000
Goodwill	56,429,000				25,593,000				56,429,000	25,593,000	26,500,000
Depreciation and amortization									17,605,000	16,586,000	17,379,000
Business Acquisition, Transaction Costs	11,264,000								11,264,000
Gain on sale of preferred shares in Topgolf							$ 17,662,000		0	17,662,000	0
Percentage of Topgolf preferred shares sold												10.00%
Allocated Share-based Compensation Expense									12,615,000	9,285,000	11,220,000
Interest Expense									4,365,000	2,368,000	8,733,000
Goodwill, Period Increase (Decrease)									30,836,000
Golf Clubs
Segment Reporting Information [Line Items]
Additions to long-lived assets									11,396,000	6,163,000	6,774,000
Goodwill	26,904,000				25,593,000				26,904,000	25,593,000	26,500,000
Depreciation and amortization									8,769,000	8,509,000	8,907,000
Golf Ball
Segment Reporting Information [Line Items]
Additions to long-lived assets									12,178,000	6,585,000	7,238,000
Goodwill	0				0				0	0	0
Depreciation and amortization									4,496,000	4,355,000	4,566,000
Gear, Accessories and Other
Segment Reporting Information [Line Items]
Additions to long-lived assets									3,790,000	2,050,000	2,253,000
Goodwill	29,525,000				0				29,525,000	0	0
Depreciation and amortization									4,340,000	3,722,000	3,906,000
U.S. federal
Segment Reporting Information [Line Items]
Valuation allowance, amount offset due to recognition in income taxes payable					15,974,000				15,974,000
Operating Segment | Golf Clubs
Segment Reporting Information [Line Items]
Net sales									643,096,000	582,381,000	581,450,000
Income (loss) before income taxes									77,018,000	48,489,000	32,630,000
Identifiable assets	321,265,000				276,654,000				321,265,000	276,654,000	295,659,000
Operating Segment | Golf Ball
Segment Reporting Information [Line Items]
Net sales									162,546,000	152,261,000	143,173,000
Income (loss) before income taxes									26,854,000	23,953,000	18,956,000
Identifiable assets	57,120,000				45,758,000				57,120,000	45,758,000	47,884,000
Operating Segment | Gear, Accessories and Other
Segment Reporting Information [Line Items]
Net sales									243,094,000	136,550,000	119,171,000
Income (loss) before income taxes									30,631,000	18,223,000	19,137,000
Identifiable assets	236,515,000				35,788,000				236,515,000	35,788,000	36,429,000
Reconciling items
Segment Reporting Information [Line Items]
Income (loss) before income taxes									(66,448,000)	(32,272,000)	(50,660,000)
Identifiable assets	376,257,000				443,082,000				376,257,000	443,082,000	$ 251,252,000
Decrease in reconciling items									34,176,000
Allocated Share-based Compensation Expense									2,286,000
Interest Expense									2,164,000
Increase in foreign currency exchange									4,189,000
Assets period increase	$ (66,825,000)				191,830,000				$ (66,825,000)	191,830,000
Valuation Allowance of Deferred Tax Assets [Member]
Segment Reporting Information [Line Items]
Increase (decrease) in valuation allowance, deferred tax asset					$ 156,600,000					$ (156,600,000)

Segment Information - Summary o

Segment Information - Summary of Net Sales by Product (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Sales Concentration [Line Items]
Net sales	$ 191,657	$ 243,604	$ 304,548	$ 308,927	$ 163,695	$ 187,850	$ 245,594	$ 274,053	$ 1,048,736	$ 871,192	$ 843,794
Woods
Sales Concentration [Line Items]
Net sales									307,865	216,094	222,193
Irons
Sales Concentration [Line Items]
Net sales									250,636	278,562	205,522
Putters
Sales Concentration [Line Items]
Net sales									84,595	87,725	86,293
Golf Balls
Sales Concentration [Line Items]
Net sales									162,546	152,261	143,145
Accessories and Other
Sales Concentration [Line Items]
Net sales									$ 243,094	$ 136,550	$ 186,641

Segment Information - Summary89

Segment Information - Summary of Revenue and Long Lived Assets by Geographical Areas (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Principal Transaction Revenue [Line Items]
Sales	$ 191,657	$ 243,604	$ 304,548	$ 308,927	$ 163,695	$ 187,850	$ 245,594	$ 274,053	$ 1,048,736	$ 871,192	$ 843,794
Long-Lived Assets (excluding deferred tax assets)	433,774				226,151				433,774	226,151	232,775
United States
Principal Transaction Revenue [Line Items]
Sales									566,365	447,613	446,474
Long-Lived Assets (excluding deferred tax assets)	403,493				199,617				403,493	199,617	205,952
Europe
Principal Transaction Revenue [Line Items]
Sales									139,515	122,805	125,116
Long-Lived Assets (excluding deferred tax assets)	7,681				7,260				7,681	7,260	8,414
Japan
Principal Transaction Revenue [Line Items]
Sales									199,331	170,760	138,031
Long-Lived Assets (excluding deferred tax assets)	7,635				6,201				7,635	6,201	4,445
Rest of Asia
Principal Transaction Revenue [Line Items]
Sales									76,540	67,099	70,315
Long-Lived Assets (excluding deferred tax assets)	3,717				2,668				3,717	2,668	2,868
Other foreign countries
Principal Transaction Revenue [Line Items]
Sales									66,985	62,915	63,858
Long-Lived Assets (excluding deferred tax assets)	$ 11,248				$ 10,405				$ 11,248	$ 10,405	$ 11,096

Transactions with Related Par90

Transactions with Related Parties - Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transactions [Abstract]
Charitable contributions made to Callaway Golf Company Foundation	$ 750	$ 750	$ 1,000

Summarized Quarterly Data (Un91

Summarized Quarterly Data (Unaudited) - Additional Information (Detail) - USD ($)	Apr. 30, 2016	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Effect of Fourth Quarter Events [Line Items]
Net sales		$ 191,657,000	$ 243,604,000	$ 304,548,000	$ 308,927,000	$ 163,695,000	$ 187,850,000	$ 245,594,000	$ 274,053,000	$ 1,048,736,000	$ 871,192,000	$ 843,794,000
Gross profit		79,666,000	104,902,000	148,165,000	147,715,000	63,111,000	78,875,000	110,633,000	132,392,000	480,448,000	385,011,000	357,633,000
Net income		(18,776,000)	3,089,000	31,474,000	25,880,000	124,198,000	(5,739,000)	34,105,000	38,390,000	41,667,000	190,954,000	14,568,000
Less: Net income attributable to non-controlling interests		610,000	29,000	31,000	191,000	927,000	127,000	0	0	861,000	1,054,000	0
Net income (loss) attributable to Callaway Golf Company		$ (19,386,000)	$ 3,060,000	$ 31,443,000	$ 25,689,000	$ 123,271,000	$ (5,866,000)	$ 34,105,000	$ 38,390,000	$ 40,806,000	$ 189,900,000	$ 14,568,000
Earnings per common share:
Basic (in dollars per share)		$ (0.20)	$ 0.03	$ 0.33	$ 0.27	$ 1.31	$ (0.06)	$ 0.36	$ 0.41	$ 0.43	$ 2.02	$ 0.18
Dilutive earnings (loss) per common share (in dollars per share)		(0.20)	0.03	0.33	0.27	1.28	(0.06)	$ 0.36	0.40	$ 0.42	$ 1.98	$ 0.17
Gain on sale of investments in golf-related ventures								$ 17,662,000		$ 0	$ 17,662,000	$ 0
Dilutive earnings (loss) per common share (in dollars per share)		$ (0.20)	$ 0.03	$ 0.33	$ 0.27	1.28	$ (0.06)	$ 0.36	$ 0.40	$ 0.42	$ 1.98	$ 0.17
Percentage of Topgolf preferred shares sold	10.00%
Valuation Allowance of Deferred Tax Assets
Earnings per common share:
Dilutive earnings (loss) per common share (in dollars per share)						$ 1.63
Increase (decrease) in valuation allowance, deferred tax asset						$ 156,600,000					$ (156,600,000)
Dilutive earnings (loss) per common share (in dollars per share)						$ 1.63
U.S. federal
Earnings per common share:
Dilutive earnings (loss) per common share (in dollars per share)						$ 0.16
Impact to net income, amount offset due to recognition of income taxes						$ 15,974,000				$ 15,974,000
Dilutive earnings (loss) per common share (in dollars per share)						$ 0.16
Cost-method Investments
Earnings per common share:
Dilutive earnings (loss) per common share (in dollars per share)	$ 0.18
Gain on sale of investments in golf-related ventures	$ 17,662,000
Dilutive earnings (loss) per common share (in dollars per share)	$ 0.18