Magnachip Semiconductor (MX) 10-Q 4 Aug 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	MX
Entity Registrant Name	MAGNACHIP SEMICONDUCTOR Corp
Entity Central Index Key	1,325,702
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		34,036,978

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 131,523	$ 83,355
Restricted cash (Note 12)		18,251
Accounts receivable, net	76,007	61,775
Inventories, net	58,143	57,048
Other receivables	3,821	5,864
Prepaid expenses	11,680	8,137
Hedge collateral	6,590	3,150
Other current assets	5,063	5,113
Total current assets	292,827	242,693
Property, plant and equipment, net	186,078	179,793
Intangible assets, net	3,530	3,085
Long-term prepaid expenses	14,853	9,556
Deferred income tax assets	253	193
Other non-current assets	4,486	6,632
Total assets	502,027	441,952
Current liabilities
Accounts payable	52,202	51,509
Other accounts payable	12,702	12,272
Accrued expenses	51,227	60,365
Deferred revenue	11,487	11,092
Deposits received (Note 12)	266	16,549
Other current liabilities	2,148	1,654
Total current liabilities	130,032	153,441
Long-term borrowings, net	302,380	221,082
Accrued severance benefits, net	130,050	129,225
Other non-current liabilities	10,055	10,318
Total liabilities	572,517	514,066
Commitments and Contingencies (Note 18)
Stockholders' equity
Common stock, $0.01 par value, 150,000,000 shares authorized, 42,384,836 shares issued and 34,010,627 outstanding at June 30, 2017 and 41,627,103 shares issued and 35,048,338 outstanding at December 31, 2016	424	416
Additional paid-in capital	133,885	130,189
Accumulated deficit	(90,146)	(125,825)
Treasury stock, 8,374,209 shares at June 30, 2017 and 6,578,765 shares at December 31, 2016	(102,319)	(90,918)
Accumulated other comprehensive income (loss)	(12,334)	14,024
Total stockholders' deficit	(70,490)	(72,114)
Total liabilities and stockholders' equity	$ 502,027	$ 441,952

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	42,384,836	41,627,103
Common stock, shares outstanding	34,010,627	35,048,338
Treasury stock, shares	8,374,209	6,578,765

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 166,685	$ 167,106	$ 328,395	$ 315,211
Cost of sales	120,023	130,357	240,163	244,213
Gross profit	46,662	36,749	88,232	70,998
Operating expenses
Selling, general and administrative expenses	17,730	20,403	40,878	40,355
Research and development expenses	16,928	18,178	34,886	35,993
Restructuring and other charges (gain), net		1,305	(17,010)	(6,480)
Early termination charges	2,262	4,240	13,369	4,240
Total operating expenses	36,920	44,126	72,123	74,108
Operating income (loss)	9,742	(7,377)	16,109	(3,110)
Interest expense	(5,441)	(4,073)	(10,614)	(8,130)
Foreign currency gain (loss), net	(11,905)	(7,101)	29,881	1,094
Other income, net	83	1,007	1,694	1,542
Income (loss) before income taxes	(7,521)	(17,544)	37,070	(8,604)
Income tax expenses	538	272	1,391	1,087
Net income (loss)	$ (8,059)	$ (17,816)	$ 35,679	$ (9,691)
Income (loss) per common share-
Basic	$ (0.24)	$ (0.51)	$ 1.06	$ (0.28)
Diluted	$ (0.24)	$ (0.51)	$ 0.87	$ (0.28)
Weighted average number of shares-
Basic	33,952,574	34,716,081	33,808,237	34,707,492
Diluted	33,952,574	34,716,081	43,772,115	34,707,492

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (8,059)	$ (17,816)	$ 35,679	$ (9,691)
Other comprehensive income (loss)
Foreign currency translation adjustments	9,362	6,167	(25,962)	147
Derivative adjustments
Fair valuation of derivatives	(1,594)	(24)	909	41
Reclassification adjustment for gain on derivatives included in net income (loss)	(808)		(1,305)
Total other comprehensive income (loss)	6,960	6,143	(26,358)	188
Total comprehensive income (loss)	$ (1,099)	$ (11,673)	$ 9,321	$ (9,503)

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, beginning at Dec. 31, 2015	$ (62,330)		$ 411	$ 124,618	$ (96,210)	$ (90,918)	$ (231)
Balance, Shares beginning at Dec. 31, 2015		34,568,942
Stock-based compensation	1,504			1,504
Settlement of restricted stock units			1	(1)
Settlement of restricted stock units, Shares		162,812
Other comprehensive income (loss), net	188						188
Net income (loss)	(9,691)				(9,691)
Balance, ending at Jun. 30, 2016	(70,329)		412	126,121	(105,901)	(90,918)	(43)
Balance, Shares ending at Jun. 30, 2016		34,731,754
Balance, beginning at Mar. 31, 2016							(6,186)
Other comprehensive income (loss), net	6,143						6,143
Net income (loss)	(17,816)
Balance, ending at Jun. 30, 2016	(70,329)		412	126,121	(105,901)	(90,918)	(43)
Balance, Shares ending at Jun. 30, 2016		34,731,754
Balance, beginning at Dec. 31, 2016	$ (72,114)		416	130,189	(125,825)	(90,918)	14,024
Balance, Shares beginning at Dec. 31, 2016	35,048,338	35,048,338
Stock-based compensation	$ 1,179			1,179
Exercise of stock options	2,525		4	2,521
Exercise of stock options, Shares		360,211
Settlement of restricted stock units			4	(4)
Settlement of restricted stock units, Shares		397,522
Acquisition of treasury stock	$ (11,401)					(11,401)
Acquisition of treasury stock, Shares	(1,795,444)	(1,795,444)
Other comprehensive income (loss), net	$ (26,358)						(26,358)
Net income (loss)	35,679				35,679
Balance, ending at Jun. 30, 2017	$ (70,490)		424	133,885	(90,146)	(102,319)	(12,334)
Balance, Shares ending at Jun. 30, 2017	34,010,627	34,010,627
Balance, beginning at Mar. 31, 2017							(19,294)
Other comprehensive income (loss), net	$ 6,960						6,960
Net income (loss)	(8,059)
Balance, ending at Jun. 30, 2017	$ (70,490)		$ 424	$ 133,885	$ (90,146)	$ (102,319)	$ (12,334)
Balance, Shares ending at Jun. 30, 2017	34,010,627	34,010,627

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income (loss)	$ 35,679	$ (9,691)
Adjustments to reconcile net income (loss) to net cash used in operating activities
Depreciation and amortization	13,531	12,252
Provision for severance benefits	10,776	9,827
Amortization of debt issuance costs and original issue discount	950	347
Gain on foreign currency, net	(35,813)	(1,140)
Restructuring gain and other	(17,010)	(7,785)
Stock-based compensation	1,179	1,504
Other	220	164
Changes in operating assets and liabilities
Accounts receivable, net	(9,730)	8,505
Inventories, net	2,646	(11,946)
Other receivables	4,361	(3,635)
Other current assets	1,135	2,160
Accounts payable	(1,919)	7,779
Other accounts payable	(7,790)	(5,156)
Accrued expenses	(10,776)	1,913
Deferred revenue	(265)	1,477
Other current liabilities	(436)	(1,364)
Other non-current liabilities	(268)	(661)
Payment of severance benefits	(18,082)	(13,102)
Other	(61)	(137)
Net cash used in operating activities	(31,673)	(8,689)
Cash flows from investing activities
Proceeds from disposal of plant, property and equipment	18,750
Purchase of plant, property and equipment	(10,807)	(5,834)
Payment for intellectual property registration	(566)	(478)
Collection of guarantee deposits	1,400	383
Proceeds from settlement of hedge collateral	6,781	5,917
Payment of hedge collateral	(10,036)
Payment of guarantee deposits	(41)	(11)
Other	22	11
Net cash provided by (used in) investing activities	5,503	(12)
Cash flows from financing activities
Proceeds from issuance of senior notes	86,250
Payment of debt issuance costs	(5,902)
Proceeds from exercise of stock options	2,525
Acquisition of treasury stock	(11,401)
Net cash provided by financing activities	71,472
Effect of exchange rates on cash and cash equivalents	2,866	1,733
Net increase (decrease) in cash and cash equivalents	48,168	(6,968)
Cash and cash equivalents
Beginning of the period	83,355	90,882
End of the period	131,523	83,914
Supplemental cash flow information
Cash paid for interest	7,980	7,453
Cash paid for income taxes	790	469
Non-cash operating activities
Insurance proceeds in restricted cash reclassified from other receivables		(29,571)
Non-cash investing activities
Property, plant and equipment additions in other accounts payable	$ 2,092	$ 993

Business, Basis of Presentation

Business, Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Business, Basis of Presentation and Significant Accounting Policies	1. Business, Basis of Presentation and Significant Accounting Policies Business MagnaChip Semiconductor Corporation (together with its subsidiaries, the “Company”) is a designer and manufacturer of analog and mixed-signal semiconductor platform solutions for communications, Internet of Things (“IoT”) applications, consumer, industrial and automotive applications. The Company provides technology platforms for analog, mixed signal, power, high voltage, non-volatile Basis of Presentation The accompanying unaudited interim consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States of America (“US GAAP”). These interim consolidated financial statements include normal recurring adjustments and the elimination of all intercompany accounts and transactions which are, in the opinion of management, necessary to provide a fair statement of the Company’s financial condition and results of operations for the periods presented. These interim consolidated financial statements are presented in accordance with Accounting Standards Codification 270, “Interim Reporting” The December 31, 2016 balance sheet data was derived from the Company’s audited financial statements, but does not include all disclosures required by US GAAP. Reclassifications Certain charges related to the closure of the Company’s 6-inch Recent Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (“FASB”) issued ASU 2017-09, 2017-09”). 2017-09 2017-09 In August 2016, the FASB issued ASU 2016-15, 2016-15”). 2016-15 2016-18, 2016-18”). 2016-18 2016-15 2016-18 In February 2016, the FASB issued Accounting Standards Update No. 2016-02, 2016-02”) 2016-02 right-of-use 2016-02 In May 2014, the FASB issued Accounting Standards Update No. 2014-09, 2014-09”). 2014-09 2014-09 2015-14 2014-09 2014-09 No. 2016-08, 2016-08”) No. 2016-12, 2016-12”) 2016-12 2016-12, 2016-08 2014-09 2016-20 The Company started analyzing the potential impact of applying the new guidance by reviewing its current accounting policies, customer arrangements and practices. In terms of the Company’s evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company’s analysis is in progress to determine whether there should be any change in the timing and amount of the recognition of revenues on product sales and non-recurring Recently Adopted Accounting Pronouncements In July 2015, the FASB issued Accounting Standards Update No. 2015-11, 2015-11”). 2015-11, 2015-11 2015-11 In November 2015, the FASB issued Accounting Standards Update No. 2015-17, (“ASU 2015-17”). 2015-17 2015-17 In March 2016, the FASB issued Accounting Standards Update No. 2016-09, 2016-09”). 2016-09 2016-09 2016-09

Sales of Accounts Receivable an

Sales of Accounts Receivable and Receivable Discount Program	6 Months Ended
	Jun. 30, 2017
Receivables [Abstract]
Sales of Accounts Receivable and Receivable Discount Program	2. Sales of Accounts Receivable and Receivable Discount Program The Company has entered into an agreement to sell selected trade accounts receivable to a financial institution from time to time since March 2012. After the sale, the Company does not retain any interest in the receivables and the applicable financial institution collects these accounts receivable directly from the customer. The proceeds from the sales of these accounts receivable totaled $11,345 thousand and $10,973 thousand for the six months ended June 30, 2017 and 2016, respectively, and these sales resulted in pre-tax losses of $34 thousand and $36 thousand for the six months ended June 30, 2017 and 2016, respectively, which are included in selling, general and administrative expenses in the consolidated statements of operations. Net proceeds of this accounts receivable sale program are recognized in the consolidated statements of cash flows as part of operating cash flows. The Company uses receivable discount programs with certain customers. These discount arrangements allow the Company to accelerate collection of customers’ receivables.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Inventories	3. Inventories Inventories as of June 30, 2017 and December 31, 2016 consist of the following (in thousands): June 30, December 31, Finished goods $ 11,699 $ 7,867 Semi-finished goods and work-in-process 42,157 46,653 Raw materials 8,091 7,846 Materials in-transit 1,493 1,859 Less: inventory reserve (5,297 ) (7,177 ) Inventories, net $ 58,143 $ 57,048 Changes in inventory reserve for the three and six months ended June 30, 2017 and 2016 are as follows (in thousands): Three Months Six Months Three Months Six Months June 30, 2017 June 30, 2016 Beginning balance $ (7,966 ) $ (7,177 ) $ (17,246 ) $ (16,033 ) Change in reserve 1,544 1,159 547 (1,181 ) Write off 983 1,150 1,526 2,297 Translation adjustments 142 (429 ) 176 (80 ) Ending balance $ (5,297 ) $ (5,297 ) $ (14,997 ) $ (14,997 ) Inventory reserve represents the Company’s best estimate in value lost due to excessive inventory level, physical deterioration, obsolescence, changes in price levels, or other causes based on individual facts and circumstances. Inventory reserve relates to inventory items including finished goods, semi-finished goods and work-in-process. Write off of this reserve is recognized only when the related inventory has been disposed or scrapped.

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	4. Property, Plant and Equipment Property, plant and equipment as of June 30, 2017 and December 31, 2016 are comprised of the following (in thousands): June 30, December 31, Buildings and related structures $ 65,791 $ 64,939 Machinery and equipment 276,350 255,618 Others 32,439 29,492 374,580 350,049 Less: accumulated depreciation (203,630 ) (184,521 ) Land 15,128 14,265 Property, plant and equipment, net $ 186,078 $ 179,793 Aggregate depreciation expenses totaled $13,233 thousand and $12,036 thousand for the six months ended June 30, 2017 and 2016, respectively.

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets	5. Intangible Assets Intangible assets as of June 30, 2017 and December 31, 2016 are comprised of the following (in thousands): June 30, 2017 Gross Accumulated Net Technology $ 18,985 $ (18,985 ) $ — Customer relationships 27,266 (27,266 ) — Intellectual property assets 10,063 (6,533 ) 3,530 Intangible assets, net $ 56,314 $ (52,784 ) $ 3,530 December 31, 2016 Gross Accumulated Net Technology $ 17,903 $ (17,903 ) $ — Customer relationships 25,712 (25,712 ) — Intellectual property assets 9,026 (5,941 ) 3,085 Intangible assets, net $ 52,641 $ (49,556 ) $ 3,085 Aggregate amortization expenses for intangible assets totaled $298 thousand and $216 thousand for the six months ended June 30, 2017 and 2016, respectively.

Accrued Expenses

Accrued Expenses	6 Months Ended
	Jun. 30, 2017
Payables and Accruals [Abstract]
Accrued Expenses	6. Accrued Expenses Accrued expenses as of June 30, 2017 and December 31, 2016 are comprised of the following (in thousands): June 30, December 31, Payroll, benefits and related taxes, excluding severance benefits $ 19,703 $ 24,982 Withholding tax attributable to intercompany interest income 16,543 15,573 Interest on senior notes 8,268 6,831 Settlement obligations 141 243 Outside service fees 1,824 4,423 Others 4,748 8,313 Accrued expenses $ 51,227 $ 60,365

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	7. Derivative Financial Instruments The Company’s Korean subsidiary from time to time has entered into zero cost collar and forward contracts to hedge the risk of changes in the functional-currency-equivalent cash flows attributable to currency rate changes on U.S. dollar denominated revenues. Details of derivative contracts as of June 30, 2017 are as follows (in thousands): Date of transaction Type of derivative Total notional amount Month of settlement November 11, 2016 Zero cost collar $ 6,000 July to August 2017 June 22, 2017 Zero cost collar $ 105,000 September 2017 to February 2018 June 22, 2017 Forward $ 20,000 September to December 2017 Details of derivative contracts as of December 31, 2016 are as follows (in thousands): Date of transaction Type of derivative Total notional amount Month of settlement November 11, 2016 Zero cost collar $ 18,000 March to August 2017 The zero cost collar and forward contracts qualify as cash flow hedges under Accounting Standards Codification 815, “Derivatives and Hedging,” since at both the inception of the contracts and on an ongoing basis, the hedging relationship was and is expected to be highly effective in achieving offsetting cash flows attributable to the hedged risk during the term of the contracts. The Company is utilizing the “hypothetical derivative” method to measure the effectiveness by comparing the changes in value of the actual derivative versus the change in fair value of the “hypothetical derivative.” The fair values of the Company’s outstanding zero cost collar and forward contracts recorded as assets and liabilities as of June 30, 2017 and December 31, 2016 are as follows (in thousands): Derivatives designated as hedging instruments: June 30, December 31, Asset Derivatives: Zero cost collars Other current assets $ 2 $ — Liabilities Derivatives: Zero cost collars Other current liabilities $ 888 $ 453 Liabilities Derivatives: Forwards Other current liabilities $ 73 $ — Offsetting of derivative assets and liabilities as of June 30, 2017 is as follows (in thousands): As of June 30, 2017 Gross amounts of Gross amounts Net amounts of Gross amounts not offset Net amount Financial Cash collateral Asset Derivatives: Zero cost collars $ 2 $ — $ 2 $ — $ — $ 2 Liabilities Derivatives: Zero cost collars $ 888 $ — $ 888 $ — $ (590 ) $ 298 Liabilities Derivatives: Forwards $ 73 $ — $ 73 $ — $ — $ 73 Offsetting of derivative liabilities as of December 31, 2016 is as follows (in thousands): As of December 31, 2016 Gross amounts of Gross amounts Net amounts of Gross amounts not offset Net amount Financial Cash collateral Liabilities Derivatives: Zero cost collars $ 453 $ — $ 453 $ — $ (650 ) $ (197 ) For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative is reported as a component of accumulated other comprehensive income (“AOCI”) and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. Gains and losses on the derivative, representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness, are recognized in current earnings. The following table summarizes the impact of derivative instruments on the consolidated statement of operations for the three months ended June 30, 2017 and 2016 (in thousands): Derivatives in ASC 815 Cash Flow Amount of Gain (Loss) Location of Amount of Gain Location of Loss Amount of Loss Three Months Ended Three Months Ended Three Months Ended 2017 2016 2017 2016 2017 2016 Zero cost collars $ (1,620 ) $ (24 ) Net sales $ 808 $ — Other income, net $ (368 ) $ (8 ) Forwards $ 26 $ — Net sales $ — $ — Other income, net $ (99 ) $ — Total $ (1,594 ) $ (24 ) $ 808 $ — $ (467 ) $ (8 ) The following table summarizes the impact of derivative instruments on the consolidated statement of operations for the six months ended June 30, 2017 and 2016 (in thousands): Derivatives in ASC 815 Cash Flow Hedging Relationships Amount of Gain Location of Amount of Gain Location of Gain Amount of Gain Six Months Ended Six Months Ended Six Months Ended 2017 2016 2017 2016 2017 2016 Zero cost collars $ 883 $ 41 Net sales $ 1,305 $ — Other income, net $ 269 $ 34 Forwards $ 26 $ — Net sales $ — $ — Other income, net $ (99 ) $ — Total $ 909 $ 41 $ 1,305 $ — $ 170 $ 34 As of June 30, 2017, the amount expected to be reclassified from accumulated other comprehensive income (loss) into loss within the next twelve months is $832 thousand. The Company set aside $6,000 thousand and $2,500 thousand cash deposits to the counterparty, Nomura Financial Investment (Korea) Co., Ltd. (“NFIK”) for the zero cost collar and forward contracts outstanding as of June 30, 2017 and for the zero cost collar contracts outstanding as of December 31, 2016, respectively. These cash deposits are recorded as hedge collateral on the consolidated balance sheets. The Company is required to deposit additional cash collateral with NFIK for any exposure in excess of $500 thousand, and $590 thousand and $650 thousand of additional cash collateral were required and recorded as hedge collateral on the consolidated balance sheets as of June 30, 2017 and December 31, 2016, respectively. These outstanding zero cost collar contracts and forward contracts are subject to termination if the sum of qualified and unrestricted cash and cash equivalents held by the Company is less than $30,000 thousand on the last day of a fiscal quarter.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	8. Fair Value Measurements Fair Value of Financial Instruments As of June 30, 2017, the following table represents the Company’s assets and liabilities measured at fair value on a recurring basis and the basis for that measurement (in thousands): Carrying Value Fair Value Quoted Prices in Significant Significant Assets: Derivative assets (other current assets) $ 2 $ 2 — $ 2 — Liabilities: Derivative liabilities (other current liabilities) $ 961 $ 961 — $ 961 — As of December 31, 2016, the following table represents the Company’s liabilities measured at fair value on a recurring basis and the basis for that measurement (in thousands): Carrying Value Fair Value Quoted Prices in Significant Significant Liabilities: Derivative liabilities (other current liabilities) $ 453 $ 453 — $ 453 — Items not reflected in the table above include cash and cash equivalents, accounts receivable, other receivables, accounts payable, and other accounts payable, fair value of which approximate carrying values due to the short-term nature of these instruments. The fair value of assets and liabilities whose carrying value approximates fair value is determined using Level 2 inputs, with the exception of cash (Level 1). Fair Value of Long-term Borrowings June 30, 2017 December 31, 2016 Carrying Fair Carrying Fair (In thousands of US dollars) Long-term Borrowings: 5.0% Exchangeable Senior Notes due March 2021 (Level 2) $ 80,926 $ 122,671 $ — $ — 6.625% Senior Notes due July 2021 (Level 2) $ 221,454 $ 209,700 $ 221,082 $ 193,500 On January 17, 2017, the Company’s wholly-owned subsidiary, MagnaChip Semiconductor S.A., closed an offering (the “Exchangeable Notes Offering”) of 5.0% Exchangeable Senior Notes due March 1, 2021 (the “Exchangeable Notes”) of $86,250 thousand, which represents the principal amount, excluding $5,902 thousand of debt issuance costs. The Company estimates the fair value of the Exchangeable Notes using the market approach, which utilizes quoted market prices that fall under Level 2. For further description of the Exchangeable Notes, see Note 9, “Long-term Borrowings”. On July 18, 2013, the Company issued 6.625% senior notes due July 15, 2021 (the “2021 Notes”) of $225,000 thousand, which represents the principal amount, excluding $1,125 thousand of original issue discount and $5,120 thousand of debt issuance costs. The Company estimates the fair value of the 2021 Notes using the market approach, which utilizes quoted market prices that fall under Level 2. For further description of the 2021 Notes, see Note 9, “Long-term Borrowings”. Fair Values Measured on a Non-recurring Basis The Company’s non-financial assets, such as property, plant and equipment, and intangible assets, are recorded at fair value upon acquisition and are remeasured at fair value only if an impairment charge is recognized. As of June 30, 2017 and 2016, the Company did not have any assets or liabilities measured at fair value on a non-recurring basis.

Long-Term Borrowings

Long-Term Borrowings	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Long-Term Borrowings	9. Long-Term Borrowings Long-term borrowings as of June 30, 2017 and December 31, 2016 are as follows (in thousands): June 30, December 31, 5.0% Exchangeable Senior Notes due March 2021 $ 86,250 $ — 6.625% Senior Notes due July 2021 $ 225,000 $ 225,000 Less: unamortized discount and debt issuance costs (8,870 ) (3,918 ) Long-term borrowings, net of unamortized discount and debt issuance costs $ 302,380 $ 221,082 5.0% Exchangeable Senior Notes On January 17, 2017, MagnaChip Semiconductor S.A. closed the Exchangeable Notes Offering of $86,250 thousand aggregate principal amount of 5.0% Exchangeable Notes. Interest on the Exchangeable Notes accrues at a rate of 5.0% per annum, payable semi-annually on March 1 and September 1 of each year, beginning on March 1, 2017. The Exchangeable Notes will mature on March 1, 2021, unless earlier repurchased or converted. Holders may convert their notes at their option at any time prior to the close of business on the business day immediately preceding the stated maturity date. The Company used a portion of the net proceeds from the issuance to repurchase 1,795,444 shares of common stock under its stock repurchase program at an aggregate cost of $11,401 thousand. Upon conversion, the Company will deliver for each $1,000 principal amount of converted notes a number of shares equally to the exchange rate, which will initially be 121.1387 shares of common stock per $1,000 principal amount of Exchangeable Notes, equivalent to an initial exchange price of approximately $8.26 per share of common stock. The exchange rate will be subject to adjustment in some circumstances, but will not be adjusted for any accrued and unpaid interest. In addition, if a “make-whole fundamental change” (as defined in the Exchangeable Notes indenture (the “Exchangeable Notes Indenture”)) occurs prior to the stated maturity date, the Company will increase the exchange rate for a holder who elects to convert its notes in connection with such make-whole fundamental change in certain circumstances. MagnaChip Semiconductor S.A. may also, under certain circumstances, be required to pay additional amounts to holders of Exchangeable Notes if withholding or deduction is required in a relevant tax jurisdiction. If the Company undergoes a fundamental change, subject to certain conditions, holders may require the Company to repurchase for cash all or part of their notes at a purchase price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change purchase date. In addition, upon certain events of default described in the Exchangeable Notes Indenture, the trustee or holders of at least 25% principal amount of the Exchangeable Notes may declare 100% of the then outstanding Exchangeable Notes due and payable in full, together with all accrued and unpaid interest thereon. Payment of principal on the Exchangeable Notes may also accelerate and become automatically due and payable upon certain events of default involving bankruptcy or insolvency proceedings involving the Company, MagnaChip Semiconductor S.A. and their significant subsidiaries. The Exchangeable Notes are not redeemable at the option of MagnaChip Semiconductor S.A. prior to the maturity date. The Exchangeable Notes Indenture contains covenants that limit the ability of the Company, MagnaChip Semiconductor S.A. and the Company’s other restricted subsidiaries to: (i) declare or pay any dividend or make any payment or distribution on account of or purchase or redeem the Company’s capital stock or equity interests of the restricted subsidiaries; (ii) make any principal payment on, or redeem or repurchase, prior to any scheduled repayment or maturity, any subordinated indebtedness; (iii) make certain investments; (iv) incur additional indebtedness and issue certain types of capital stock; (v) create or incur any lien (except for permitted liens) that secures obligations under any indebtedness; (vi) merge with or into or sell all or substantially all of the Company’s assets to other companies; (vii) enter into certain types of transactions with affiliates; (viii) guarantee the payment of any indebtedness; and (ix) designate unrestricted subsidiaries. These covenants are subject to a number of exceptions and qualifications. Certain of these restrictive covenants will terminate if the Exchangeable Notes are rated investment grade at any time. The Company incurred debt issuance costs of $5,902 thousand related to the issuance of the Exchangeable Notes. The debt issuance costs are recorded as a direct deduction from the long-term borrowings in the consolidated balance sheets and amortized to interest expense using the effective interest method over the term of the Exchangeable Notes. Interest expense related to the Exchangeable Notes for the six months ended June 30, 2017 was $2,542 thousand. 6.625% Senior Notes On July 18, 2013, the Company issued $225,000,000 aggregate principal amount of the 2021 Notes at a price of 99.5%. Interest on the 2021 Notes accrues at a rate of 6.625% per annum, payable semi-annually on January 15 and July 15 of each year, beginning on January 15, 2014. The Company can optionally redeem all or a part of the 2021 Notes according to the following schedule: on or after July 15, 2017, the Company may on any one or more occasions redeem all or a part of the 2021 Notes, at a redemption price equal to 103.313%, 101.656% and 100% of the principal amount of the notes redeemed on or after July 15, 2017, 2018 and 2019, respectively, plus accrued and unpaid interest and special interest, if any, on the notes redeemed, to the applicable date of redemption. The Indenture relating to the 2021 Notes contains covenants that limit the ability of the Company and its restricted subsidiaries to: (i) declare or pay any dividend or make any payment or distribution on account of or purchase or redeem the Company’s capital stock or equity interests of the restricted subsidiaries; (ii) make any principal payment on, or redeem or repurchase, prior to any scheduled repayment or maturity, any subordinated indebtedness; (iii) make certain investments; (iv) incur additional indebtedness and issue certain types of capital stock; (v) create or incur any lien (except for permitted liens) that secures obligations under any indebtedness; (vi) merge with or into or sell all or substantially all of the Company’s assets to other companies; (vii) enter into certain types of transactions with affiliates; (viii) guarantee the payment of any indebtedness; (ix) enter into sale-leaseback transactions; (x) enter into agreements that would restrict the ability of the restricted subsidiaries to make distributions with respect to their equity to the Company or other restricted subsidiaries, to make loans to the Company or other restricted subsidiaries or to transfer assets to the Company or other restricted subsidiaries; and (xi) designate unrestricted subsidiaries. These covenants are subject to a number of exceptions and qualifications. Certain of these restrictive covenants will terminate if the 2021 Notes are rated investment grade at any time. The Company incurred original issue discount of $1,125 thousand and debt issuance costs of $5,120 thousand related to the issuance of the 2021 Notes. The original issue discount and the debt issuance costs are recorded as a direct deduction from the long-term borrowings in the consolidated balance sheets and amortized to interest expense using the effective interest method over the term of the 2021 Notes. Interest expenses related to the 2021 Notes for the six months ended June 30, 2017 and 2016 were $7,826 thousand and $7,801 thousand, respectively.

Accrued Severance Benefits

Accrued Severance Benefits	6 Months Ended
	Jun. 30, 2017
Postemployment Benefits [Abstract]
Accrued Severance Benefits	10. Accrued Severance Benefits The majority of accrued severance benefits are for employees in the Company’s Korean subsidiary. Pursuant to the Employee Retirement Benefit Security Act of Korea, eligible employees and executive officers with one or more years of service are entitled to severance benefits upon the termination of their employment based on their length of service and rate of pay. As of June 30, 2017, 98% of employees of the Company were eligible for severance benefits. Changes in accrued severance benefits are as follows (in thousands): Three Six Three Six June 30, 2017 June 30, 2016 Beginning balance $ 140,878 $ 130,144 $ 139,103 $ 135,160 Provisions 3,390 10,776 4,056 9,827 Severance payments (10,558 ) (18,082 ) (9,004 ) (13,102 ) Translation adjustments (2,816 ) 8,056 (1,355 ) 915 130,894 130,894 132,800 132,800 Less: Cumulative contributions to the National Pension Fund (245 ) (245 ) (290 ) (290 ) Group severance insurance plan (599 ) (599 ) (669 ) (669 ) Accrued severance benefits, net $ 130,050 $ 130,050 $ 131,841 $ 131,841 The severance benefits funded through the Company’s National Pension Fund and group severance insurance plan will be used exclusively for payment of severance benefits to eligible employees. These amounts have been deducted from the accrued severance benefit balance. The Company is liable to pay the following future benefits to its non-executive Severance benefit Remainder of 2017 $ — 2018 — 2019 527 2020 1,108 2021 1,403 2022 1,432 2023 – 2027 18,868 The above amounts were determined based on the non-executive non-executive Korea’s mandatory retirement age is 60 under the Employment Promotion for the Aged Act.

Foreign Currency Gain, Net

Foreign Currency Gain, Net	6 Months Ended
	Jun. 30, 2017
Foreign Currency [Abstract]
Foreign Currency Gain, Net	11. Foreign Currency Gain, Net Net foreign currency gain or loss includes non-cash translation gain or loss associated with intercompany balances. A substantial portion of the Company’s net foreign currency gain or loss is non-cash translation gain or loss associated with intercompany long-term loans to the Company’s Korean subsidiary. The loans are denominated in U.S. dollars and are affected by changes in the exchange rate between the Korean won and the U.S. dollar. As of June 30, 2017, the outstanding intercompany loan balance including accrued interests between the Korean subsidiary and the Dutch subsidiary was $670,992 thousand. This amount includes a newly executed intercompany loan of $75,000 thousand during the first quarter of 2017, which was used to transfer a portion of the net proceeds from the Exchangeable Notes Offering from the Company’s Luxembourg’s subsidiary to its Dutch subsidiary, and then to the Korean subsidiary. The Korean won to U.S. dollar exchange rates were 1,139.6:1 and 1,208.5:1 using the first base rate as of June 30, 2017 and December 31, 2016, respectively, as quoted by the KEB Hana Bank.

Restructuring and Other Charges

Restructuring and Other Charges (Gain), Net	6 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges (Gain), Net	12. Restructuring and Other Charges (Gain), Net As of December 21, 2016, the Company entered into a purchase and sale agreement to sell a building located in Cheongju, South Korea. The building has historically been used to house the Company’s six-inch “6-inch In March 2017, the Company sold its sensor product business, which was included in and reported as part of Display Solutions line of its Standard Products Group, to a third party for proceeds of $1,295 thousand, in an effort to improve our overall profitability. The Company recorded $375 thousand net gain from this sale after deducting the book values of certain assets transferred to the buyer. During the first quarter of 2016, the Company completed all procedures necessary to sell all machinery in its closed 6-inch

Early Termination Charges

Early Termination Charges	6 Months Ended
	Jun. 30, 2017
Restructuring and Related Activities [Abstract]
Early Termination Charges	13. Early Termination Charges As of February 22, 2017, the Company’s Board of Directors approved the implementation of a new headcount reduction plan (the “Headcount Reduction Plan”). As of June 30, 2017, 352 employees elected to resign from the Company during which the Headcount Reduction Plan was offered. The cost related to the Headcount Reduction Plan, all of which is expected to consist of cash expenditures, is approximately $31 million of which approximately $28 million has already been paid. The Company recorded in its consolidated statement of operations $11.1 million and $2.3 million in termination related charges as early termination charges for the three months ended March 31, 2017 and June 30, 2017, respectively. The remaining total estimated cost relates to statutory severance benefits, which are required by law and have already been fully accrued in the Company’s financial statements.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	14. Income Taxes The Company files income tax returns in the U.S., Korea, Japan, Taiwan and various other jurisdictions. The Company’s Korean subsidiary is the primary operating subsidiary of the Company. For the six months ended June 30, 2017 and 2016, no income tax expense or benefit for the Korean subsidiary was recorded due to net operating loss carry-forwards available to offset taxable income and full allowance for deferred tax assets. Income tax expense recorded for the six months ended June 30, 2017 and 2016 was $1,391 thousand and $1,087 thousand, respectively. The increase in income tax expenses was primarily attributable to changes in unrecognized tax benefits as a result of a lapse of the applicable statute of limitations in the Korean subsidiary and an increase in accrued interests on intercompany loans.

Geographic and Segment Informat

Geographic and Segment Information	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Geographic and Segment Information	15. Geographic and Segment Information The Company has two operating segments: Foundry Services Group and Standard Products Group. The Company’s chief operating decision maker is its Chief Executive Officer who allocates resources and assesses performance of the business and other activities based on gross profit. The following sets forth information relating to the operating segment (in thousands): Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, Net Sales Foundry Services Group $ 81,528 $ 62,310 $ 159,056 $ 122,289 Standard Products Group Display Solutions 49,753 74,406 98,632 132,465 Power Solutions 35,314 30,213 70,594 60,131 Total Standard Products Group 85,067 104,619 169,226 192,596 All other 90 177 113 326 Total net sales $ 166,685 $ 167,106 $ 328,395 $ 315,211 Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, Gross Profit Foundry Services Group $ 23,433 $ 14,187 $ 45,520 $ 28,480 Standard Products Group 23,139 22,385 42,599 43,145 All other 90 177 113 (627 ) Total gross profit $ 46,662 $ 36,749 $ 88,232 $ 70,998 The following is a summary of net sales by geographic region, based on the location to which the products are billed (in thousands): Three Months Ended June 30, June 30, Korea $ 67,979 $ 46,822 Asia Pacific (other than Korea) 76,524 100,107 U.S.A. 11,155 8,338 Europe 10,725 11,749 Others 302 90 Total $ 166,685 $ 167,106 Six Months Ended June 30, June 30, Korea $ 133,062 $ 97,450 Asia Pacific (other than Korea) 155,988 181,900 U.S.A. 20,322 13,114 Europe 18,578 22,266 Others 445 481 Total $ 328,395 $ 315,211 Net sales from the Company’s top ten largest customers accounted for 59% and 68% for the three months ended June 30, 2017 and 2016, respectively, and 60% and 65% for the six months ended June 30, 2017 and 2016, respectively. For the three months ended June 30, 2017, the Company had one customer that represented 15.1% of its net sales, and for the six months ended June 30, 2017, the Company had one customer that represented 14.9% of its net sales. For the three months ended June 30, 2016, the Company had one customer that represented 29.4% of its net sales, and for the six months ended June 30, 2016, the Company had two customers that represented 24.3% and 11.0% of its net sales, respectively. 97% of the Company’s property, plant and equipment are located in Korea as of June 30, 2017.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss)	16. Accumulated Other Comprehensive Income (Loss) Accumulated other comprehensive income (loss) consists of the following as of June 30, 2017 and December 31, 2016, respectively (in thousands): June 30, December 31, Foreign currency translation adjustments $ (11,502 ) $ 14,460 Derivative adjustments (832 ) (436 ) Total $ (12,334 ) $ 14,024 Changes in accumulated other comprehensive income (loss) for the three months ended June 30, 2017 and 2016 are as follows (in thousands): Three Months Ended June 30, 2017 Foreign Derivative Total Beginning balance $ (20,864 ) $ 1,570 $ (19,294 ) Other comprehensive income (loss) before reclassifications 9,362 (1,594 ) 7,768 Amounts reclassified from accumulated other comprehensive loss — (808 ) (808 ) Net current-period other comprehensive income (loss) 9,362 (2,402 ) 6,960 Ending balance $ (11,502 ) $ (832 ) $ (12,334 ) Three Months Ended June 30, 2016 Foreign Derivative Total Beginning balance $ (6,210 ) $ 24 $ (6,186 ) Other comprehensive income (loss) before reclassifications 6,167 (24 ) 6,143 Amounts reclassified from accumulated other comprehensive income — — — Net current-period other comprehensive income (loss) 6,167 (24 ) 6,143 Ending balance $ (43 ) $ — $ (43 ) Changes in accumulated other comprehensive income (loss) for the six months ended June 30, 2017 and 2016 are as follows (in thousands): Six Months Ended June 30, 2017 Foreign Derivative Total Beginning balance $ 14,460 $ (436 ) $ 14,024 Other comprehensive income (loss) before reclassifications (25,962 ) 909 (25,053 ) Amounts reclassified from accumulated other comprehensive loss — (1,305 ) (1,305 ) Net current-period other comprehensive loss (25,962 ) (396 ) (26,358 ) Ending balance $ (11,502 ) $ (832 ) $ (12,334 ) Six Months Ended June 30, 2016 Foreign Derivative Total Beginning balance $ (190 ) $ (41 ) $ (231 ) Other comprehensive income before reclassifications 147 41 188 Amounts reclassified from accumulated other comprehensive income — — — Net current-period other comprehensive income 147 41 188 Ending balance $ (43 ) $ — $ (43 )

Earnings (Loss) per Share

Earnings (Loss) per Share	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Earnings (Loss) per Share	17. Earnings (Loss) per Share The following table illustrates the computation of basic and diluted earnings (loss) per common share for the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, June 30, (In thousands of US dollars, Basic Loss per Share Net loss $ (8,059 ) $ (17,816 ) Basic weighted average common stock outstanding 33,952,574 34,716,081 Basic loss per share $ (0.24 ) $ (0.51 ) Diluted Loss per Share Net loss $ (8,059 ) $ (17,816 ) Diluted weighted average common stock outstanding 33,952,574 34,716,081 Diluted loss per share $ (0.24 ) $ (0.51 ) Six Months Ended June 30, June 30, (In thousands of US dollars, Basic Earnings (Loss) per Share Net income (loss) $ 35,679 $ (9,691 ) Basic weighted average common stock outstanding 33,808,237 34,707,492 Basic earnings (loss) per share $ 1.06 $ (0.28 ) Diluted Earnings (Loss) per Share Net income (loss) $ 35,679 $ (9,691 ) Add back: Interest expense on Exchangeable Notes 2,542 — Net income (loss) allocated to common stockholders $ 38,221 $ (9,691 ) Basic weighted average common stock outstanding 33,808,237 34,707,492 Net effect of dilutive equity awards 439,264 — Net effect of assumed conversion of 5.0% Exchangeable Notes to common stock 9,524,614 — Diluted weighted average common stock outstanding 43,772,115 34,707,492 Diluted earnings (loss) per share $ 0.87 $ (0.28 ) The following outstanding instruments were excluded from the computation of diluted earnings (loss) per share, as they have an anti-dilutive effect on the calculation: Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, Options 3,006,377 3,752,331 1,026,605 3,752,331 Restricted Stock Units 149,495 515,795 — 515,795 For the three months ended June 30, 2017, 10,448,213 of the assumed conversion of Exchangeable Notes was excluded from the computation of diluted loss per share as the effect was anti-dilutive due to the net loss incurred for the period.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	18. Commitments and Contingencies SEC Enforcement Staff Review In March 2014, the Company voluntarily reported to the Securities and Exchange Commission, or the SEC, that the Company’s Audit Committee had determined that the Company incorrectly recognized revenue on certain transactions and as a result would restate its financial statements, and that the Audit Committee had commenced an independent investigation. Over the course of 2014 and the first two quarters of 2015, the Company voluntarily produced documents to the SEC regarding the various accounting issues identified during the independent investigation, and whether the Company’s hiring of an accountant from the Company’s independent registered public accounting firm impacted that accounting firm’s independence. On July 22, 2014, the Staff of the SEC’s Division of Enforcement obtained a Formal Order of Investigation. On March 12, 2015, the SEC issued a subpoena for documents to the Company in connection with its investigation. On May 1, 2017, the SEC announced that it had reached a final settlement with the Company, resolving SEC’s investigation. In that connection, the Company has consented, without admitting or denying the SEC’s findings, to the entry of an administrative order by the SEC directing that the Company cease and desist from committing or causing any violations of certain provisions of the federal securities laws and related SEC regulations. The SEC’s administrative order was entered on May 1, 2017. The SEC imposed a monetary penalty of $3,000 thousand on the Company. In the first quarter ended March 31, 2017, the Company established a reserve in that amount for the potential settlement of this matter. The reserved monetary penalty of $3,000 thousand was paid to the SEC during the second quarter of 2017. The Company also agreed to an undertaking to cooperate fully with the SEC in any and all investigations, litigations or other proceedings relating to or arising from the matters described in the SEC’s order. In connection with the settlement, the SEC considered remedial acts promptly undertaken by the Company and its cooperation with the SEC staff during the course of the investigation. Among other things, as previously disclosed in the Company’s filings with the SEC, the Audit Committee of the Company self-investigated and self-reported the accounting errors, selected new management and implemented various additional controls designed to prevent similar errors going forward. Securities Class Action Complaints The Company recorded the $23,500 thousand of the settlement obligation for the Class Action Litigation as accrued expenses in the consolidated balance sheets as of December 31, 2015 and as selling, general and administrative expenses in the consolidated statements of operations for the year ended December 31, 2015. For further information regarding the Class Action Litigation, see “Part I: Item 3. Legal Proceedings” included elsewhere in the Company’s annual report on Form 10-K for the fiscal year ended December 31, 2016 (the “2016 Form 10-K”). The Company recorded $29,571 thousand of the proceeds from the insurers as other receivables in the consolidated balance sheets as of December 31, 2015 and as a deduction of the selling, general and administrative expenses in the consolidated statements of operations for the year ended December 31, 2015. The proceeds from the insurers of $29,571 thousand were deposited into the Company’s escrow account during the first quarter of 2016 and the Company reclassified the $29,571 thousand deposits recorded in other receivables into restricted cash. During the third quarter of 2016, the Company disbursed the aggregate settlement payment of $23,500 thousand after the court granted plaintiffs’ renewed motion for preliminary approval of the settlement in July 2016. Upon the settlement payment, $6,114 thousand of the insurance proceeds remained in the Company’s escrow account. For subsequent treatment of the escrow amount, see “ Shareholder Derivative Complaints Shareholder Derivative Complaints The settlement for the shareholder derivative actions described in “Part I: Item 3. Legal Proceedings” of the 2016 Form 10-K provided for an aggregate payment from the Company defendants’ directors and officers insurance policies of $3,000 thousand to be made to an escrow account, which will be payable to the Company (less certain deductions and applicable interest) once the settlement becomes effective. For further information regarding the shareholder derivative actions, see “Part I: Item 3. Legal Proceedings” in the 2016 Form 10-K. The $3,000 thousand settlement payment was included in the insurance proceeds of $29,571 thousand as discussed in “ Securities Class Action Complaints On June 10, 2016, the court granted plaintiffs’ motion for preliminary approval of the proposed settlement. On October 18, 2016, after a hearing held on October 14, 2016, the court entered its order and final judgment (the “Judgment”) granting final approval of the proposed settlement and awarding plaintiffs’ counsel $750 thousand for attorneys’ fees and litigation expenses. As a result, $750 thousand was paid out of the Company’s escrow account. The Judgment was not appealed within the applicable appeals period (on or before December 19, 2016). The settlement therefore became effective after the expiration of the appeals period and $2,258 thousand was paid to the Company from the escrow account, previously recorded as restricted cash, in December 2016. The remaining restricted cash related to insurance proceeds of $3,078 thousand was also released in December 2016.

Business, Basis of Presentati26

Business, Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Business	Business MagnaChip Semiconductor Corporation (together with its subsidiaries, the “Company”) is a designer and manufacturer of analog and mixed-signal semiconductor platform solutions for communications, Internet of Things (“IoT”) applications, consumer, industrial and automotive applications. The Company provides technology platforms for analog, mixed signal, power, high voltage, non-volatile
Basis of Presentation	Basis of Presentation The accompanying unaudited interim consolidated financial statements of the Company have been prepared in accordance with generally accepted accounting principles in the United States of America (“US GAAP”). These interim consolidated financial statements include normal recurring adjustments and the elimination of all intercompany accounts and transactions which are, in the opinion of management, necessary to provide a fair statement of the Company’s financial condition and results of operations for the periods presented. These interim consolidated financial statements are presented in accordance with Accounting Standards Codification 270, “Interim Reporting” The December 31, 2016 balance sheet data was derived from the Company’s audited financial statements, but does not include all disclosures required by US GAAP.
Reclassifications	Reclassifications Certain charges related to the closure of the Company’s 6-inch fab and headcount reduction, previously included in selling, general and administrative expenses in the consolidated statements of operations, have been reclassified to restructuring and other charges (gain), net and early termination charges, respectively, to conform to the Company’s current year presentation. These reclassifications had no impact on the Company’s net income (loss), the consolidated balance sheets, the consolidated statements of comprehensive income (loss) and the consolidated statements of cash flows as previously reported.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2017, the Financial Accounting Standards Board (“FASB”) issued ASU 2017-09, 2017-09”). 2017-09 2017-09 In August 2016, the FASB issued ASU 2016-15, 2016-15”). 2016-15 2016-18, 2016-18”). 2016-18 2016-15 2016-18 In February 2016, the FASB issued Accounting Standards Update No. 2016-02, 2016-02”) 2016-02 right-of-use 2016-02 In May 2014, the FASB issued Accounting Standards Update No. 2014-09, 2014-09”). 2014-09 2014-09 2015-14 2014-09 2014-09 No. 2016-08, 2016-08”) No. 2016-12, 2016-12”) 2016-12 2016-12, 2016-08 2014-09 2016-20 The Company started analyzing the potential impact of applying the new guidance by reviewing its current accounting policies, customer arrangements and practices. In terms of the Company’s evaluation efforts, the Company has assigned internal resources in addition to the engagement of third party service providers to assist in the evaluation. The Company’s analysis is in progress to determine whether there should be any change in the timing and amount of the recognition of revenues on product sales and non-recurring
Recently Adopted Accounting Pronouncements - Simplifying the Measurement of Inventory	Recently Adopted Accounting Pronouncements In July 2015, the FASB issued Accounting Standards Update No. 2015-11, “Simplifying the Measurement of Inventory” (“ASU 2015-11”). Under ASU 2015-11, inventory will be measured at the lower of cost and net realizable value, and options that currently exist for market value will be eliminated. Net realizable value is defined as the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. No other changes were made to the current guidance on inventory measurement. The Company adopted ASU 2015-11 in the first quarter of 2017, and the adoption of ASU 2015-11 did not impact the Company’s consolidated financial statements.
Recently Adopted Accounting Pronouncements - Income Taxes	Recently Adopted Accounting Pronouncements In November 2015, the FASB issued Accounting Standards Update No. 2015-17, “Income Taxes (Topic 740): Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”). The amendments in ASU 2015-17 require an entity to classify all deferred tax assets and liabilities as noncurrent. The Company adopted ASU 2015-17 in the first quarter of 2017, and the impact on the Company’s consolidated financial statements is immaterial.
Recently Adopted Accounting Pronouncements - Improvements to Employee Share-Based Payment Accounting	Recently Adopted Accounting Pronouncements In March 2016, the FASB issued Accounting Standards Update No. 2016-09, “Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”). ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. The primary impact of adoption is the recognition of excess tax benefits within income tax provision rather than within shareholders’ equity. The Company adopted ASU 2016-09 in the first quarter of 2017, and the adoption of ASU 2016-09 did not impact the Company’s consolidated financial statements.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2017
Inventory Disclosure [Abstract]
Summary of Inventories	Inventories as of June 30, 2017 and December 31, 2016 consist of the following (in thousands): June 30, December 31, Finished goods $ 11,699 $ 7,867 Semi-finished goods and work-in-process 42,157 46,653 Raw materials 8,091 7,846 Materials in-transit 1,493 1,859 Less: inventory reserve (5,297 ) (7,177 ) Inventories, net $ 58,143 $ 57,048
Changes in Inventory Reserve	Changes in inventory reserve for the three and six months ended June 30, 2017 and 2016 are as follows (in thousands): Three Months Six Months Three Months Six Months June 30, 2017 June 30, 2016 Beginning balance $ (7,966 ) $ (7,177 ) $ (17,246 ) $ (16,033 ) Change in reserve 1,544 1,159 547 (1,181 ) Write off 983 1,150 1,526 2,297 Translation adjustments 142 (429 ) 176 (80 ) Ending balance $ (5,297 ) $ (5,297 ) $ (14,997 ) $ (14,997 )

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2017
Property, Plant and Equipment [Abstract]
Summary of Property, Plant and Equipment	Property, plant and equipment as of June 30, 2017 and December 31, 2016 are comprised of the following (in thousands): June 30, December 31, Buildings and related structures $ 65,791 $ 64,939 Machinery and equipment 276,350 255,618 Others 32,439 29,492 374,580 350,049 Less: accumulated depreciation (203,630 ) (184,521 ) Land 15,128 14,265 Property, plant and equipment, net $ 186,078 $ 179,793

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	Intangible assets as of June 30, 2017 and December 31, 2016 are comprised of the following (in thousands): June 30, 2017 Gross Accumulated Net Technology $ 18,985 $ (18,985 ) $ — Customer relationships 27,266 (27,266 ) — Intellectual property assets 10,063 (6,533 ) 3,530 Intangible assets, net $ 56,314 $ (52,784 ) $ 3,530 December 31, 2016 Gross Accumulated Net Technology $ 17,903 $ (17,903 ) $ — Customer relationships 25,712 (25,712 ) — Intellectual property assets 9,026 (5,941 ) 3,085 Intangible assets, net $ 52,641 $ (49,556 ) $ 3,085

Accrued Expenses (Tables)

Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2017
Payables and Accruals [Abstract]
Summary of Accrued Expenses	Accrued expenses as of June 30, 2017 and December 31, 2016 are comprised of the following (in thousands): June 30, December 31, Payroll, benefits and related taxes, excluding severance benefits $ 19,703 $ 24,982 Withholding tax attributable to intercompany interest income 16,543 15,573 Interest on senior notes 8,268 6,831 Settlement obligations 141 243 Outside service fees 1,824 4,423 Others 4,748 8,313 Accrued expenses $ 51,227 $ 60,365

Derivative Financial Instrume31

Derivative Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Details of Derivative Contracts	Details of derivative contracts as of June 30, 2017 are as follows (in thousands): Date of transaction Type of derivative Total notional amount Month of settlement November 11, 2016 Zero cost collar $ 6,000 July to August 2017 June 22, 2017 Zero cost collar $ 105,000 September 2017 to February 2018 June 22, 2017 Forward $ 20,000 September to December 2017 Details of derivative contracts as of December 31, 2016 are as follows (in thousands): Date of transaction Type of derivative Total notional amount Month of settlement November 11, 2016 Zero cost collar $ 18,000 March to August 2017
Fair Values of Outstanding Zero Cost Collar and Forward Contracts Recorded as Assets and Liabilities	The fair values of the Company’s outstanding zero cost collar and forward contracts recorded as assets and liabilities as of June 30, 2017 and December 31, 2016 are as follows (in thousands): Derivatives designated as hedging instruments: June 30, December 31, Asset Derivatives: Zero cost collars Other current assets $ 2 $ — Liabilities Derivatives: Zero cost collars Other current liabilities $ 888 $ 453 Liabilities Derivatives: Forwards Other current liabilities $ 73 $ —
Offsetting of Derivative Asset and Liabilities	Offsetting of derivative assets and liabilities as of June 30, 2017 is as follows (in thousands): As of June 30, 2017 Gross amounts of Gross amounts Net amounts of Gross amounts not offset Net amount Financial Cash collateral Asset Derivatives: Zero cost collars $ 2 $ — $ 2 $ — $ — $ 2 Liabilities Derivatives: Zero cost collars $ 888 $ — $ 888 $ — $ (590 ) $ 298 Liabilities Derivatives: Forwards $ 73 $ — $ 73 $ — $ — $ 73 Offsetting of derivative liabilities as of December 31, 2016 is as follows (in thousands): As of December 31, 2016 Gross amounts of Gross amounts Net amounts of Gross amounts not offset Net amount Financial Cash collateral Liabilities Derivatives: Zero cost collars $ 453 $ — $ 453 $ — $ (650 ) $ (197 )
Impact of Derivative Instruments on Consolidated Statement of Operations	The following table summarizes the impact of derivative instruments on the consolidated statement of operations for the three months ended June 30, 2017 and 2016 (in thousands): Derivatives in ASC 815 Cash Flow Amount of Gain (Loss) Location of Amount of Gain Location of Loss Amount of Loss Three Months Ended Three Months Ended Three Months Ended 2017 2016 2017 2016 2017 2016 Zero cost collars $ (1,620 ) $ (24 ) Net sales $ 808 $ — Other income, net $ (368 ) $ (8 ) Forwards $ 26 $ — Net sales $ — $ — Other income, net $ (99 ) $ — Total $ (1,594 ) $ (24 ) $ 808 $ — $ (467 ) $ (8 ) The following table summarizes the impact of derivative instruments on the consolidated statement of operations for the six months ended June 30, 2017 and 2016 (in thousands): Derivatives in ASC 815 Cash Flow Hedging Relationships Amount of Gain Location of Amount of Gain Location of Gain Amount of Gain Six Months Ended Six Months Ended Six Months Ended 2017 2016 2017 2016 2017 2016 Zero cost collars $ 883 $ 41 Net sales $ 1,305 $ — Other income, net $ 269 $ 34 Forwards $ 26 $ — Net sales $ — $ — Other income, net $ (99 ) $ — Total $ 909 $ 41 $ 1,305 $ — $ 170 $ 34

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	As of June 30, 2017, the following table represents the Company’s assets and liabilities measured at fair value on a recurring basis and the basis for that measurement (in thousands): Carrying Value Fair Value Quoted Prices in Significant Significant Assets: Derivative assets (other current assets) $ 2 $ 2 — $ 2 — Liabilities: Derivative liabilities (other current liabilities) $ 961 $ 961 — $ 961 — As of December 31, 2016, the following table represents the Company’s liabilities measured at fair value on a recurring basis and the basis for that measurement (in thousands): Carrying Value Fair Value Quoted Prices in Significant Significant Liabilities: Derivative liabilities (other current liabilities) $ 453 $ 453 — $ 453 —
Schedule of Fair Value of Long-term Borrowings	Fair Value of Long-term Borrowings June 30, 2017 December 31, 2016 Carrying Fair Carrying Fair (In thousands of US dollars) Long-term Borrowings: 5.0% Exchangeable Senior Notes due March 2021 (Level 2) $ 80,926 $ 122,671 $ — $ — 6.625% Senior Notes due July 2021 (Level 2) $ 221,454 $ 209,700 $ 221,082 $ 193,500

Long-Term Borrowings (Tables)

Long-Term Borrowings (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Components of Long-term Borrowings	Long-term borrowings as of June 30, 2017 and December 31, 2016 are as follows (in thousands): June 30, December 31, 5.0% Exchangeable Senior Notes due March 2021 $ 86,250 $ — 6.625% Senior Notes due July 2021 $ 225,000 $ 225,000 Less: unamortized discount and debt issuance costs (8,870 ) (3,918 ) Long-term borrowings, net of unamortized discount and debt issuance costs $ 302,380 $ 221,082

Accrued Severance Benefits (Tab

Accrued Severance Benefits (Tables)	6 Months Ended
	Jun. 30, 2017
Postemployment Benefits [Abstract]
Changes in Accrued Severance Benefits	Changes in accrued severance benefits are as follows (in thousands): Three Six Three Six June 30, 2017 June 30, 2016 Beginning balance $ 140,878 $ 130,144 $ 139,103 $ 135,160 Provisions 3,390 10,776 4,056 9,827 Severance payments (10,558 ) (18,082 ) (9,004 ) (13,102 ) Translation adjustments (2,816 ) 8,056 (1,355 ) 915 130,894 130,894 132,800 132,800 Less: Cumulative contributions to the National Pension Fund (245 ) (245 ) (290 ) (290 ) Group severance insurance plan (599 ) (599 ) (669 ) (669 ) Accrued severance benefits, net $ 130,050 $ 130,050 $ 131,841 $ 131,841
Future Benefits Payments to Employees	The Company is liable to pay the following future benefits to its non-executive employees upon their normal retirement age (in thousands): Severance benefit Remainder of 2017 $ — 2018 — 2019 527 2020 1,108 2021 1,403 2022 1,432 2023 – 2027 18,868

Geographic and Segment Inform35

Geographic and Segment Information (Tables)	6 Months Ended
	Jun. 30, 2017
Segment Reporting [Abstract]
Schedule of Operating Segment	The following sets forth information relating to the operating segment (in thousands): Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, Net Sales Foundry Services Group $ 81,528 $ 62,310 $ 159,056 $ 122,289 Standard Products Group Display Solutions 49,753 74,406 98,632 132,465 Power Solutions 35,314 30,213 70,594 60,131 Total Standard Products Group 85,067 104,619 169,226 192,596 All other 90 177 113 326 Total net sales $ 166,685 $ 167,106 $ 328,395 $ 315,211 Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, Gross Profit Foundry Services Group $ 23,433 $ 14,187 $ 45,520 $ 28,480 Standard Products Group 23,139 22,385 42,599 43,145 All other 90 177 113 (627 ) Total gross profit $ 46,662 $ 36,749 $ 88,232 $ 70,998
Net Sales by Region, Based on Location of Products are Billed	The following is a summary of net sales by geographic region, based on the location to which the products are billed (in thousands): Three Months Ended June 30, June 30, Korea $ 67,979 $ 46,822 Asia Pacific (other than Korea) 76,524 100,107 U.S.A. 11,155 8,338 Europe 10,725 11,749 Others 302 90 Total $ 166,685 $ 167,106 Six Months Ended June 30, June 30, Korea $ 133,062 $ 97,450 Asia Pacific (other than Korea) 155,988 181,900 U.S.A. 20,322 13,114 Europe 18,578 22,266 Others 445 481 Total $ 328,395 $ 315,211

Accumulated Other Comprehensi36

Accumulated Other Comprehensive Income (Loss) (Tables)	6 Months Ended
	Jun. 30, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) consists of the following as of June 30, 2017 and December 31, 2016, respectively (in thousands): June 30, December 31, Foreign currency translation adjustments $ (11,502 ) $ 14,460 Derivative adjustments (832 ) (436 ) Total $ (12,334 ) $ 14,024
Changes in Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) for the three months ended June 30, 2017 and 2016 are as follows (in thousands): Three Months Ended June 30, 2017 Foreign Derivative Total Beginning balance $ (20,864 ) $ 1,570 $ (19,294 ) Other comprehensive income (loss) before reclassifications 9,362 (1,594 ) 7,768 Amounts reclassified from accumulated other comprehensive loss — (808 ) (808 ) Net current-period other comprehensive income (loss) 9,362 (2,402 ) 6,960 Ending balance $ (11,502 ) $ (832 ) $ (12,334 ) Three Months Ended June 30, 2016 Foreign Derivative Total Beginning balance $ (6,210 ) $ 24 $ (6,186 ) Other comprehensive income (loss) before reclassifications 6,167 (24 ) 6,143 Amounts reclassified from accumulated other comprehensive income — — — Net current-period other comprehensive income (loss) 6,167 (24 ) 6,143 Ending balance $ (43 ) $ — $ (43 ) Changes in accumulated other comprehensive income (loss) for the six months ended June 30, 2017 and 2016 are as follows (in thousands): Six Months Ended June 30, 2017 Foreign Derivative Total Beginning balance $ 14,460 $ (436 ) $ 14,024 Other comprehensive income (loss) before reclassifications (25,962 ) 909 (25,053 ) Amounts reclassified from accumulated other comprehensive loss — (1,305 ) (1,305 ) Net current-period other comprehensive loss (25,962 ) (396 ) (26,358 ) Ending balance $ (11,502 ) $ (832 ) $ (12,334 ) Six Months Ended June 30, 2016 Foreign Derivative Total Beginning balance $ (190 ) $ (41 ) $ (231 ) Other comprehensive income before reclassifications 147 41 188 Amounts reclassified from accumulated other comprehensive income — — — Net current-period other comprehensive income 147 41 188 Ending balance $ (43 ) $ — $ (43 )

Earnings (Loss) per Share (Tabl

Earnings (Loss) per Share (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Schedule of Computation of Basic and Diluted Earnings (Loss) Per Common Share	The following table illustrates the computation of basic and diluted earnings (loss) per common share for the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, June 30, (In thousands of US dollars, Basic Loss per Share Net loss $ (8,059 ) $ (17,816 ) Basic weighted average common stock outstanding 33,952,574 34,716,081 Basic loss per share $ (0.24 ) $ (0.51 ) Diluted Loss per Share Net loss $ (8,059 ) $ (17,816 ) Diluted weighted average common stock outstanding 33,952,574 34,716,081 Diluted loss per share $ (0.24 ) $ (0.51 ) Six Months Ended June 30, June 30, (In thousands of US dollars, Basic Earnings (Loss) per Share Net income (loss) $ 35,679 $ (9,691 ) Basic weighted average common stock outstanding 33,808,237 34,707,492 Basic earnings (loss) per share $ 1.06 $ (0.28 ) Diluted Earnings (Loss) per Share Net income (loss) $ 35,679 $ (9,691 ) Add back: Interest expense on Exchangeable Notes 2,542 — Net income (loss) allocated to common stockholders $ 38,221 $ (9,691 ) Basic weighted average common stock outstanding 33,808,237 34,707,492 Net effect of dilutive equity awards 439,264 — Net effect of assumed conversion of 5.0% Exchangeable Notes to common stock 9,524,614 — Diluted weighted average common stock outstanding 43,772,115 34,707,492 Diluted earnings (loss) per share $ 0.87 $ (0.28 )
Schedule of Antidilutive Securities Excluded from the Computation of Earnings (Loss) Per Common Share	The following outstanding instruments were excluded from the computation of diluted earnings (loss) per share, as they have an anti-dilutive effect on the calculation: Three Months Ended Six Months Ended June 30, June 30, June 30, June 30, Options 3,006,377 3,752,331 1,026,605 3,752,331 Restricted Stock Units 149,495 515,795 — 515,795

Business, Basis of Presentati38

Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2017SegmentsBusiness_Lines
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of operating segments | Segments	2
Standard Products Group [Member]
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Number of business lines | Business_Lines	2

Sales of Accounts Receivable 39

Sales of Accounts Receivable and Receivable Discount Program - Additional Information (Detail) - Trade Accounts Receivable [Member] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from sale of accounts receivable	$ 11,345	$ 10,973
Selling, General and Administrative Expenses [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Pre-tax losses on accounts receivable	$ 34	$ 36

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Finished goods	$ 11,699		$ 7,867
Semi-finished goods and work-in-process	42,157		46,653
Raw materials	8,091		7,846
Materials in-transit	1,493		1,859
Less: inventory reserve	(5,297)	$ (7,966)	(7,177)	$ (14,997)	$ (17,246)	$ (16,033)
Inventories, net	$ 58,143		$ 57,048

Inventories - Changes in Invent

Inventories - Changes in Inventory Reserve (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Inventory Disclosure [Abstract]
Beginning balance	$ (7,966)	$ (17,246)	$ (7,177)	$ (16,033)
Change in reserve	1,544	547	1,159	(1,181)
Write off	983	1,526	1,150	2,297
Translation adjustments	142	176	(429)	(80)
Ending balance	$ (5,297)	$ (14,997)	$ (5,297)	$ (14,997)

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 374,580	$ 350,049
Less: accumulated depreciation	(203,630)	(184,521)
Property, plant and equipment, net	186,078	179,793
Buildings and Related Structures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	65,791	64,939
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	276,350	255,618
Others [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	32,439	29,492
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 15,128	$ 14,265

Property, Plant and Equipment43

Property, Plant and Equipment - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Abstract]
Depreciation expenses	$ 13,233	$ 12,036

Intangible Assets - Summary of

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	$ 56,314	$ 52,641
Accumulated amortization	(52,784)	(49,556)
Intangible asset, Net amount	3,530	3,085
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	18,985	17,903
Accumulated amortization	(18,985)	(17,903)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	27,266	25,712
Accumulated amortization	(27,266)	(25,712)
Intellectual Property Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible asset, Gross amount	10,063	9,026
Accumulated amortization	(6,533)	(5,941)
Intangible asset, Net amount	$ 3,530	$ 3,085

Intangible Assets - Additional

Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense for intangible assets	$ 298	$ 216

Accrued Expenses - Summary of A

Accrued Expenses - Summary of Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Payroll, benefits and related taxes, excluding severance benefits	$ 19,703	$ 24,982
Withholding tax attributable to intercompany interest income	16,543	15,573
Interest on senior notes	8,268	6,831
Settlement obligations	141	243
Outside service fees	1,824	4,423
Others	4,748	8,313
Accrued expenses	$ 51,227	$ 60,365

Derivative Financial Instrume47

Derivative Financial Instruments - Details of Derivative Contracts (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Zero Cost Collar One [Member]
Derivative [Line Items]
Date of transaction	Nov. 11, 2016	Nov. 11, 2016
Type of derivative	Zero cost collar	Zero cost collar
Total notional amount	$ 6,000,000	$ 18,000,000
Month of settlement	July to August 2017	March to August 2017
Zero Cost Collar Two [Member]
Derivative [Line Items]
Date of transaction	Jun. 22, 2017
Type of derivative	Zero cost collar
Total notional amount	$ 105,000,000
Month of settlement	September 2017 to February 2018
Forward [Member]
Derivative [Line Items]
Date of transaction	Jun. 22, 2017
Type of derivative	Forward
Total notional amount	$ 20,000,000
Month of settlement	September to December 2017

Derivative Financial Instrume48

Derivative Financial Instruments - Fair Values of Outstanding Zero Cost Collar and Forward Contracts Recorded as Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Zero Cost Collars [Member]
Asset Derivatives:
Derivatives designated as hedging instruments, Asset	$ 2
Liabilities Derivatives:
Derivatives designated as hedging instruments, Liability	888	$ 453
Forward [Member]
Liabilities Derivatives:
Derivatives designated as hedging instruments, Liability	73
Other Current Assets [Member] | Zero Cost Collars [Member]
Asset Derivatives:
Derivatives designated as hedging instruments, Asset	2
Other Current Liabilities [Member] | Zero Cost Collars [Member]
Liabilities Derivatives:
Derivatives designated as hedging instruments, Liability	888	$ 453
Other Current Liabilities [Member] | Forward [Member]
Liabilities Derivatives:
Derivatives designated as hedging instruments, Liability	$ 73

Derivative Financial Instrume49

Derivative Financial Instruments - Offsetting of Derivative Assets (Detail) - Zero Cost Collars [Member] $ in Thousands	Jun. 30, 2017USD ($)
Derivative [Line Items]
Asset Derivatives, Gross amounts of recognized assets/liabilities	$ 2
Asset Derivatives, Gross amounts offset in the balance sheets	0
Asset Derivatives, Net amounts of assets/liabilities presented in the balance sheets	2
Asset Derivatives, Gross amounts not offset in the balance sheets, Financial instruments	0
Asset Derivatives, Gross amounts not offset in the balance sheets, Cash collateral pledged	0
Asset Derivatives, Net amount after master netting	$ 2

Derivative Financial Instrume50

Derivative Financial Instruments - Offsetting of Derivative Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Zero Cost Collars [Member]
Derivative [Line Items]
Liability Derivatives, Gross amounts of recognized liabilities	$ 888	$ 453
Liability Derivatives, Gross amounts offset in the balance sheets	0	0
Liability Derivatives, Net amounts of liabilities presented in the balance sheets	888	453
Liability Derivatives, Gross amounts not offset in the balance sheets, Financial instruments	0	0
Liability Derivatives, Gross amounts not offset in the balance sheets, Cash collateral pledged	(590)	(650)
Liability Derivatives, Net amount after master netting	298	$ (197)
Forward [Member]
Derivative [Line Items]
Liability Derivatives, Gross amounts of recognized liabilities	73
Liability Derivatives, Gross amounts offset in the balance sheets	0
Liability Derivatives, Net amounts of liabilities presented in the balance sheets	73
Liability Derivatives, Gross amounts not offset in the balance sheets, Financial instruments	0
Liability Derivatives, Net amount after master netting	$ 73

Derivative Financial Instrume51

Derivative Financial Instruments - Impact of Derivative Instruments on Consolidated Statement of Operations (Detail) - Cash Flow Hedging [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivative [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	$ (1,594)	$ (24)	$ 909	$ 41
Other Income, Net [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Statement of Operations on Derivatives (Ineffective Portion)	(467)	(8)	170	34
Net Sales [Member]
Derivative [Line Items]
Amount of Gain Reclassified from AOCI into Statement of Operations (Effective Portion)	808		1,305
Zero Cost Collars [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	(1,620)	(24)	883	41
Zero Cost Collars [Member] | Other Income, Net [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Statement of Operations on Derivatives (Ineffective Portion)	(368)	$ (8)	269	$ 34
Zero Cost Collars [Member] | Net Sales [Member]
Derivative [Line Items]
Amount of Gain Reclassified from AOCI into Statement of Operations (Effective Portion)	808		1,305
Forward [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in AOCI on Derivatives (Effective Portion)	26		26
Forward [Member] | Other Income, Net [Member]
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Statement of Operations on Derivatives (Ineffective Portion)	$ (99)		$ (99)

Derivative Financial Instrume52

Derivative Financial Instruments - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Derivative [Line Items]
Estimated amount reclassified from accumulated other comprehensive income (loss) into loss, period	12 months
Estimated amount reclassified from accumulated other comprehensive income (loss) into loss	$ 832,000
Zero Cost Collar and Forward Contracts [Member] | Nomura Financial Investment (Korea) Co., Ltd. [Member]
Derivative [Line Items]
Deposit with counterparty	6,000,000
Threshold amount of cash collateral	500,000
Cash collateral for credit exposure in derivatives	590,000
Termination provisions for cash and cash equivalents	$ 30,000,000
Zero Cost Collars [Member] | Nomura Financial Investment (Korea) Co., Ltd. [Member]
Derivative [Line Items]
Deposit with counterparty		$ 2,500,000
Cash collateral for credit exposure in derivatives		$ 650,000

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Other Current Assets [Member] | Carrying Value [Member]
Assets:
Derivative assets (other current assets)	$ 2
Other Current Assets [Member] | Estimate of Fair Value Measurement [Member]
Assets:
Derivative assets (other current assets)	2
Other Current Liabilities [Member] | Carrying Value [Member]
Liabilities:
Derivative liabilities	961	$ 453
Other Current Liabilities [Member] | Estimate of Fair Value Measurement [Member]
Liabilities:
Derivative liabilities	961	453
Significant Other Observable Inputs (Level 2) [Member] | Other Current Assets [Member]
Assets:
Derivative assets (other current assets)	2
Significant Other Observable Inputs (Level 2) [Member] | Other Current Liabilities [Member]
Liabilities:
Derivative liabilities	$ 961	$ 453

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Fair Value of Long-term Borrowings (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Long-term Borrowings:
Carrying amount of senior notes	$ 302,380	$ 221,082
5.0% Exchangeable Senior Notes due March 2021 [Member] | Exchangeable Senior Notes [Member] | Significant Other Observable Inputs (Level 2) [Member]
Long-term Borrowings:
Carrying amount of senior notes	80,926
Estimated fair value of senior notes	122,671
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member] | Significant Other Observable Inputs (Level 2) [Member]
Long-term Borrowings:
Carrying amount of senior notes	221,454	221,082
Estimated fair value of senior notes	$ 209,700	$ 193,500

Fair Value Measurements - Sch55

Fair Value Measurements - Schedule of Fair Value of Long-term Borrowings (Parenthetical) (Detail)	Jan. 17, 2017	Jul. 18, 2013	Jun. 30, 2017	Dec. 31, 2016
5.0% Exchangeable Senior Notes due March 2021 [Member] | Exchangeable Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate	5.00%		5.00%
Due date	Mar. 1, 2021		Mar. 1, 2021
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate		6.625%	6.625%	6.625%
Due date		Jul. 15, 2021	Jul. 15, 2021	Jul. 15, 2021

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	Jan. 17, 2017	Jul. 18, 2013	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt issuance costs paid			$ 5,902,000
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate		6.625%	6.625%	6.625%
Due date		Jul. 15, 2021	Jul. 15, 2021	Jul. 15, 2021
Aggregate principal amount		$ 225,000,000
Debt issuance costs paid		5,120,000
Original debt issue discount		$ 1,125,000
5.0% Exchangeable Senior Notes due March 2021 [Member] | Exchangeable Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate	5.00%		5.00%
Due date	Mar. 1, 2021		Mar. 1, 2021
Aggregate principal amount	$ 86,250,000
Debt issuance costs paid	$ 5,902,000		$ 5,902,000
Other Asset Class [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets fair value on non-recurring basis			0		$ 0
Liabilities fair value on non-recurring basis			$ 0		$ 0

Long-Term Borrowings - Componen

Long-Term Borrowings - Components of Long-term Borrowings (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Less: unamortized discount and debt issuance costs	$ (8,870)	$ (3,918)
Long-term borrowings, net of unamortized discount and debt issuance costs	302,380	221,082
Exchangeable Senior Notes [Member] | 5.0% Exchangeable Senior Notes due March 2021 [Member]
Debt Instrument [Line Items]
Long-term borrowings	86,250
Senior Notes [Member] | 6.625% Senior Notes Due 2021 [Member]
Debt Instrument [Line Items]
Long-term borrowings	$ 225,000	$ 225,000

Long-Term Borrowings - Compon58

Long-Term Borrowings - Components of Long-term Borrowings (Parenthetical) (Detail)	Jan. 17, 2017	Jul. 18, 2013	Jun. 30, 2017	Dec. 31, 2016
5.0% Exchangeable Senior Notes due March 2021 [Member] | Exchangeable Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate	5.00%		5.00%
Due date	Mar. 1, 2021		Mar. 1, 2021
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Interest rate		6.625%	6.625%	6.625%
Due date		Jul. 15, 2021	Jul. 15, 2021	Jul. 15, 2021

Long-Term Borrowings - Addition

Long-Term Borrowings - Additional Information (Detail) - USD ($)	Jan. 17, 2017	Jul. 18, 2013	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Repurchase of common stock, shares			1,795,444
Repurchase of common stock			$ 11,401,000
Debt issuance costs paid			5,902,000
Interest expense related to the Exchangeable Notes			$ 2,542,000
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 225,000,000
Interest rate		6.625%	6.625%		6.625%
Due date		Jul. 15, 2021	Jul. 15, 2021		Jul. 15, 2021
Aggregate principal amount of senior notes pricing		99.50%
Debt issuance costs paid		$ 5,120,000
Interest expense related to the Exchangeable Notes			$ 7,826,000	$ 7,801,000
Original debt issue discount		$ 1,125,000
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member] | 2017 [Member]
Debt Instrument [Line Items]
Redemption price plus accrued, unpaid interest and special interest to the date of redemption			103.313%
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member] | 2018 [Member]
Debt Instrument [Line Items]
Redemption price plus accrued, unpaid interest and special interest to the date of redemption			101.656%
6.625% Senior Notes Due 2021 [Member] | Senior Notes [Member] | 2019 [Member]
Debt Instrument [Line Items]
Redemption price plus accrued, unpaid interest and special interest to the date of redemption			100.00%
5.0% Exchangeable Senior Notes due March 2021 [Member] | Exchangeable Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount	$ 86,250,000
Interest rate	5.00%		5.00%
Due date	Mar. 1, 2021		Mar. 1, 2021
Aggregate principal amount of senior notes pricing	5.00%
Convertible notes principal amount denomination value			$ 1,000
Conversion of converted notes, shares issued			121.1387
Exchange price			$ 8.26
Redemption price plus accrued, unpaid interest and special interest to the date of redemption			100.00%
Minimum required percentage of holders to declare repurchase of notes			25.00%
Percentage of notes to repurchased on declaration by minimum required holders			100.00%
Debt issuance costs paid	$ 5,902,000		$ 5,902,000
Interest expense related to the Exchangeable Notes			$ 2,542,000

Accrued Severance Benefits - Ad

Accrued Severance Benefits - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2017
Percentage of employees eligible for severance benefits	98.00%
Korea [Member] | Maximum [Member]
Retirement age of employees	60 years

Accrued Severance Benefits - Ch

Accrued Severance Benefits - Changes in Accrued Severance Benefits (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Postemployment Benefits [Abstract]
Beginning balance	$ 140,878	$ 139,103	$ 130,144	$ 135,160
Provisions	3,390	4,056	10,776	9,827
Severance payments	(10,558)	(9,004)	(18,082)	(13,102)
Translation adjustments	(2,816)	(1,355)	8,056	915
Ending balance	130,894	132,800	130,894	132,800
Less: Cumulative contributions to the National Pension Fund	(245)	(290)	(245)	(290)
Group severance insurance plan	(599)	(669)	(599)	(669)
Accrued severance benefits, net	$ 130,050	$ 131,841	$ 130,050	$ 131,841	$ 129,225

Accrued Severance Benefits - Fu

Accrued Severance Benefits - Future Benefits Payments to Employees (Detail) $ in Thousands	Jun. 30, 2017USD ($)
Retirement Benefits [Abstract]
Remainder of 2017	$ 0
2,018	0
2,019	527
2,020	1,108
2,021	1,403
2,022	1,432
2023 - 2027	$ 18,868

Foreign Currency Gain, Net - Ad

Foreign Currency Gain, Net - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)	Jun. 30, 2017USD ($)₩ / $	Dec. 31, 2016₩ / $
Foreign Currency Transaction [Abstract]
Intercompany loan balances		$ 670,992
Exchange rates using first base rate | ₩ / $		1,139.6	1,208.5
New issue of intercompany loans	$ 75,000

Restructuring and Other Charg64

Restructuring and Other Charges (Gain), Net - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended			6 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restricted cash		$ 18,251
Deposits received		16,549				$ 266
Gain on sale of machinery and building as part of restructuring				$ (1,305)		$ 17,010	$ 6,480
Sensor Business [Member]
Restructuring Cost and Reserve [Line Items]
Proceeds from sale of business	$ 1,295
Net gain on sale of business	$ 375
Korea [Member] | Buildings [Member]
Restructuring Cost and Reserve [Line Items]
Gross proceeds from sale of building		18,204
Value-added tax, for sale of the building		1,655
Restricted cash		18,204
Deposits received		$ 16,549
Decrease in restricted cash due to release			$ 18,204
Korea [Member] | Buildings [Member] | Restructuring Gain [Member]
Restructuring Cost and Reserve [Line Items]
Gain on sale of machinery and building as part of restructuring			$ 16,635
6-inch Fabrication Facility Closure [Member]
Restructuring Cost and Reserve [Line Items]
Gain on sale of machinery and building as part of restructuring					$ 7,785
Restructuring related deposits								$ 8,165

Early Termination Charges - Add

Early Termination Charges - Additional Information (Detail) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2017USD ($)Employee_Position	Mar. 31, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)Employee_Position	Jun. 30, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Early termination charges	$ 2,262		$ 4,240	$ 13,369	$ 4,240
Headcount Reduction Plan [Member]
Restructuring Cost and Reserve [Line Items]
Total expected cost	31,000			$ 31,000
Early termination charges	$ 2,300	$ 11,100
Number of employees elected to resign | Employee_Position	352			352
Headcount Reduction Plan [Member] | Early Termination Charge [Member]
Restructuring Cost and Reserve [Line Items]
Cash payments				$ 28,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Contingency [Line Items]
Income tax expenses (benefits)	$ 538,000	$ 272,000	$ 1,391,000	$ 1,087,000
Korean Subsidiary [Member]
Income Tax Contingency [Line Items]
Income tax expenses (benefits)			$ 0	$ 0

Geographic and Segment Inform67

Geographic and Segment Information - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2017Customer	Jun. 30, 2016Customer	Jun. 30, 2017SegmentsCustomer	Jun. 30, 2016Customer
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of operating segments | Segments			2
Customer Concentration Risk [Member] | Net Sales [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of customers greater than ten percent threshold	1	1	1	2
Customer Concentration Risk [Member] | Net Sales [Member] | Top Ten Customers [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	59.00%	68.00%	60.00%	65.00%
Number of customers	10	10	10	10
Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer One [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	15.10%	29.40%	14.90%	24.30%
Customer Concentration Risk [Member] | Net Sales [Member] | Top Customer Two [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage				11.00%
Geographic Concentration Risk [Member] | Property, Plant and Equipment [Member] | Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage			97.00%

Geographic and Segment Inform68

Geographic and Segment Information - Schedule of Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Total net sales	$ 166,685	$ 167,106	$ 328,395	$ 315,211
Total gross profit	46,662	36,749	88,232	70,998
Operating Segments [Member] | Foundry Services Group [Member]
Segment Reporting Information [Line Items]
Total net sales	81,528	62,310	159,056	122,289
Total gross profit	23,433	14,187	45,520	28,480
Operating Segments [Member] | Standard Products Group [Member]
Segment Reporting Information [Line Items]
Total net sales	85,067	104,619	169,226	192,596
Total gross profit	23,139	22,385	42,599	43,145
Operating Segments [Member] | Standard Products Group [Member] | Display Solutions [Member]
Segment Reporting Information [Line Items]
Total net sales	49,753	74,406	98,632	132,465
Operating Segments [Member] | Standard Products Group [Member] | Power Solutions [Member]
Segment Reporting Information [Line Items]
Total net sales	35,314	30,213	70,594	60,131
All Other [Member]
Segment Reporting Information [Line Items]
Total net sales	90	177	113	326
Total gross profit	$ 90	$ 177	$ 113	$ (627)

Geographic and Segment Inform69

Geographic and Segment Information - Net Sales by Region, Based on Location of Products are Billed (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net sales	$ 166,685	$ 167,106	$ 328,395	$ 315,211
Korea [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net sales	67,979	46,822	133,062	97,450
Asia Pacific (Other Than Korea) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net sales	76,524	100,107	155,988	181,900
U.S.A. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net sales	11,155	8,338	20,322	13,114
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net sales	10,725	11,749	18,578	22,266
Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total net sales	$ 302	$ 90	$ 445	$ 481

Accumulated Other Comprehensi70

Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Equity [Abstract]
Foreign currency translation adjustments	$ (11,502)	$ 14,460
Derivative adjustments	(832)	(436)
Total	$ (12,334)	$ 14,024

Accumulated Other Comprehensi71

Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning			$ (72,114)	$ (62,330)
Total other comprehensive income (loss)	$ 6,960	$ 6,143	(26,358)	188
Balance, ending	(70,490)	(70,329)	(70,490)	(70,329)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	(20,864)	(6,210)	14,460	(190)
Other comprehensive income (loss) before reclassifications	9,362	6,167	(25,962)	147
Total other comprehensive income (loss)	9,362	6,167	(25,962)	147
Balance, ending	(11,502)	(43)	(11,502)	(43)
Derivative Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	1,570	24	(436)	(41)
Other comprehensive income (loss) before reclassifications	(1,594)	(24)	909	41
Amounts reclassified from accumulated other comprehensive income (loss)	(808)		(1,305)
Total other comprehensive income (loss)	(2,402)	(24)	(396)	41
Balance, ending	(832)		(832)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning	(19,294)	(6,186)	14,024	(231)
Other comprehensive income (loss) before reclassifications	7,768	6,143	(25,053)	188
Amounts reclassified from accumulated other comprehensive income (loss)	(808)		(1,305)
Total other comprehensive income (loss)	6,960	6,143	(26,358)	188
Balance, ending	$ (12,334)	$ (43)	$ (12,334)	$ (43)

Earnings (Loss) per Share - Sch

Earnings (Loss) per Share - Schedule of Computation of Basic and Diluted Earnings (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income (loss)	$ (8,059)	$ (17,816)	$ 35,679	$ (9,691)
Basic weighted average common stock outstanding	33,952,574	34,716,081	33,808,237	34,707,492
Basic earnings (loss) per share	$ (0.24)	$ (0.51)	$ 1.06	$ (0.28)
Diluted Earnings (Loss) per Share
Net income (loss)	$ (8,059)	$ (17,816)	$ 35,679	$ (9,691)
Add back: Interest expense on Exchangeable Notes			2,542
Net income (loss) allocated to common stockholders			$ 38,221	$ (9,691)
Basic weighted average common stock outstanding	33,952,574	34,716,081	33,808,237	34,707,492
Net effect of dilutive equity awards			439,264
Net effect of assumed conversion of 5.0% Exchangeable Notes to common stock			9,524,614
Diluted weighted average common stock outstanding	33,952,574	34,716,081	43,772,115	34,707,492
Diluted earnings (loss) per share	$ (0.24)	$ (0.51)	$ 0.87	$ (0.28)

Earnings (Loss) per Share - S73

Earnings (Loss) per Share - Schedule of Computation of Basic and Diluted Earnings (Loss) Per Common Share (Parenthetical) (Detail)	Jun. 30, 2017	Jan. 17, 2017
5.0% Exchangeable Senior Notes due March 2021 [Member] | Exchangeable Senior Notes [Member]
Earnings Per Share [Line Items]
Conversion of exchangeable notes to common stock rate	5.00%	5.00%

Earnings (Loss) per Share - S74

Earnings (Loss) per Share - Schedule of Antidilutive Securities Excluded from the Computation of Earnings (Loss) Per Common Share (Detail) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding units and warrants excluded from computation of diluted loss per share/unit	3,006,377	3,752,331	1,026,605	3,752,331
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding units and warrants excluded from computation of diluted loss per share/unit	149,495	515,795		515,795

Earnings (Loss) per Share - Add

Earnings (Loss) per Share - Additional Information (Detail)	3 Months Ended
	Jun. 30, 2017shares
Exchangeable Notes [Member]
Class of Stock [Line Items]
Conversion of exchangeable notes excluded from computation of diluted loss per share	10,448,213

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 18, 2016	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Insurance proceeds in restricted cash reclassified from other receivables						$ 29,571
Restricted cash							$ 18,251
Securities and Exchange Commission Actions [Member]
Loss Contingencies [Line Items]
Attorneys' fee and litigation expenses			$ 3,000
Settlement charge paid		$ 3,000
Shareholder Derivative Actions [Member]
Loss Contingencies [Line Items]
Attorneys' fee and litigation expenses	$ 750
Proceeds from insurance settlement					$ 3,000
Insurance proceeds in restricted cash reclassified from other receivables							3,078
Litigation settlement paid from escrow	$ 750						$ 2,258
Securities Class Action Complaints [Member]
Loss Contingencies [Line Items]
Proceeds from insurance settlement					29,571
Insurance proceeds in restricted cash reclassified from other receivables					$ 29,571
Disbursements of accrued claims and settlements				$ 23,500
Restricted cash				$ 6,114
Securities Class Action Complaints [Member] | Accrued Expense [Member]
Loss Contingencies [Line Items]
Accrued claim settlement								$ 23,500
Securities Class Action Complaints [Member] | Other Receivables [Member]
Loss Contingencies [Line Items]
Insurance receivable								$ 29,571