Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Components of Income Tax Expense

The components of income tax expense are as follows:

	Year Ended December 31,
	2014			2013			2012
Income (loss) before income taxes
Domestic	$	(22,146	)	$	(6,127	)	$	(2,634	)
Foreign		(93,563	)		(54,106	)		125,519
	$	(115,709	)	$	(60,233	)	$	122,885
Current income taxes expense (benefit)
Domestic	$	(3,300	)	$	(2,258	)	$	6,170
Foreign		3,312			4,875			4,533
Uncertain tax position liability (domestic)		10			(87	)		14
Uncertain tax position liability (foreign)		(66	)		7			175
		(44	)		2,537			10,892
Deferred income taxes expense
Foreign		1,567			1,433			1,955
Total income tax expenses	$	1,523		$	3,970		$	12,847
Effective tax rate		—			—			10.5	%

Difference Between Provision for Domestic and Foreign Income Taxes and Amount Calculated by Statutory Tax Rate to Net Income Before Income Taxes

The provision for domestic and foreign income taxes incurred is different from the amount calculated by applying the statutory tax rate to the net income before income taxes. The significant items causing this difference are as follows:

	Year Ended December 31,
	2014			2013			2012
Provision computed at statutory rate	$	(40,498	)	$	(21,082	)	$	43,010
Change in statutory tax rate		—			—			—
Difference in foreign tax rates		10,130			5,375			(12,544	)
Permanent differences
Derivative assets adjustment		(1,526	)		1,469			3,364
TPECs, hybrid and other interest		(6,813	)		(3,151	)		(5,920	)
Permanent impairment		—			—			(935	)
Thin capitalization		—			—			97
Deemed dividend		—			—			7,609
Permanent foreign currency gain (loss)		(901	)		3,351			(465	)
Customs penalty		—			—			742
Non-deductible settlement		6,318			—			—
Other permanent differences		(1,097	)		(881	)		1,556
Withholding tax		3,506			3,918			4,242
Foreign exchange rate adjustment		4,687			(7,455	)		(4,127	)
Change in valuation allowance		29,484			24,062			(21,184	)
Tax credit		(1,811	)		(1,818	)		(2,796	)
Uncertain tax positions liability		(56	)		(80	)		189
Others		100			262			9
Income tax expenses	$	1,523		$	3,970		$	12,847

Summary of Composition of Net Deferred Income Tax Assets (Liabilities)

A summary of the composition of net deferred income tax assets (liabilities) as of December 31, 2014, 2013 and 2012 are as follows:

	December 31,
	2014			2013			2012
Deferred tax assets
Accounts Receivables	$	1,076		$	28,628		$	8,799
Inventories		11,015			5,866			3,501
Accrued expenses		9,030			8,758			2,812
Product warranties		719			292			306
Other reserves		457			684			1,072
Royalty income		147			1,364			3,118
Property, plant and equipment		15,914			13,667			12,945
Intangible assets		780			922			—
Accumulated severance benefits		30,413			27,769			23,465
Foreign currency translation loss		17,496			12,220			13,533
NOL carry-forwards		80,979			53,714			72,533
Tax credit		25,161			26,041			26,786
Other long-term payable		1,034			608			168
Others		1,990			2,887			1,438
Total deferred tax assets		196,211			183,420			170,476
Less: valuation allowance		(194,739	)		(178,729	)		(162,968	)
		1,472			4,691			7,508
Deferred tax liabilities
Derivative assets		—			1,189			124
Intangible assets		—			—			1,712
Foreign currency translation gain		748			19			1,003
Others		147			1,239			295
Total deferred tax liabilities		895			2,447			3,134
Net deferred tax assets	$	577		$	2,244		$	4,374
Reported as
Current deferred income tax assets	$	237		$	1,348		$	1,788
Non-current deferred income tax assets	$	415		$	896		$	2,586
Current deferred income tax liabilities	$	(72	)	$	—		$	—
Non-current deferred income tax liabilities	$	(3	)	$	—		$	—

Changes in Valuation Allowance for Deferred Tax Assets

 Changes in valuation allowance for deferred tax assets for the years ended December 31, 2014, 2013 and 2012 are as follows:

	Year Ended December 31,
	2014			2013			2012
Beginning balance	$	178,729		$	162,968		$	200,056
Charged to expense (income)		29,484			24,062			(21,184	)
NOL and tax credit expiration		(7,605	)		(10,150	)		(25,305	)
Translation adjustment		(5,869	)		1,849			9,401
Ending balance	$	194,739		$	178,729		$	162,968

Reconciliation of Total Amounts of Unrecognized Tax Benefits

A tabular reconciliation of the total amounts of unrecognized tax benefits at the beginning and end of each period is as follows:

	Year Ended December 31,
	2014			2013			2012
Unrecognized tax benefits, balance at the beginning	$	11,865		$	11,196		$	10,297
Additions based on tax positions related to the current year		4,472			1,690			1,342
Additions for tax positions of prior years		47			—			41
Lapse of statute of limitations		(1,040	)		(1,067	)		(942	)
Translation adjustment		(375	)		46			458
Unrecognized tax benefits, balance at the ending	$	14,969		$	11,865		$	11,196