Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income (Loss) Before Income Taxes From Domestic and International Jurisdictions

Income/(loss) before income taxes from domestic and international jurisdictions is comprised of the following:

Year Ended December 31,	2019			2018			2017
(Dollars in thousands)
Income/(loss) before income taxes:
Domestic	$	(60,170	)	$	(44,058	)	$	(63,716	)
Foreign		(32,867	)		76,310			64,582
	$	(93,037	)	$	32,252		$	866

Benefit (Provision) for Income Taxes

The benefit/(provision) for income taxes is comprised of the following:

Year Ended December 31,	2019			2018			2017
(Dollars in thousands)
Current taxes
Federal	$	3,834		$	3,714		$	6,121
State		(146	)		127			(390	)
Foreign		(10,615	)		(11,180	)		(12,564	)
Total current taxes		(6,927	)		(7,339	)		(6,833	)
Deferred taxes
Federal		(3,174	)		(919	)		(4,387	)
State		1,014			521			1,492
Foreign		5,664			1,446			2,853
Total deferred taxes		3,504			1,048			(42	)
Income tax benefit (provision)	$	(3,423	)	$	(6,291	)	$	(6,875	)

Reconciliation of the U.S. Federal Tax Rate

The following is a reconciliation of the U.S. federal tax rate to our effective income tax rate:

Year Ended December 31,	2019			2018			2017
Statutory rate		(21.0	)%		(21.0	)%		(35.0	)%
State tax provisions, net of federal income    tax benefit		(2.7	)		6.4			263.4
Tax credits		(6.6	)		1.3			88.9
Foreign income taxes at rates other than    the statutory rate		(17.7	)		16.8			1,206.6
Valuation allowance and other		6.9			(28.0	)		(138.0	)
Changes in tax liabilities, net		0.3			(0.6	)		(11.3	)
Share based compensation		1.8			(1.0	)		(61.5	)
Transaction costs		—			—			(372.2	)
US Tax Reform implementation		—			10.9			(1,918.7	)
US tax on non-US income		6.7			(16.1	)		—
Non taxable income		(2.4	)		16.3			152.6
Impairment of goodwill		34.0			—			—
Other		4.4			(4.5	)		31.3
Effective income tax rate		3.7	%		(19.5	)%		(793.9	)%

Summary of Deferred Income Tax Assets and Liabilities

Tax effects of temporary differences that gave rise to significant portions of the deferred tax assets and deferred tax liabilities are as follows:

December 31,	2019			2018
(Dollars in thousands)
Deferred income tax assets:
Accrued liabilities	$	4,695		$	8,117
Hedging and foreign currency losses		2,386			(1,163	)
Deferred compensation		8,018			8,021
Inventory reserves		4,609			3,984
Net loss carryforwards and credits		38,342			51,552
Interest carryforwards		19,632			11,269
Competent authority deferred tax assets and    other foreign timing differences		3,954			6,749
Other		782			(3,921	)
Total before valuation allowance		82,418			84,608
Valuation allowance		(22,879	)		(16,576	)
Net deferred income tax assets		59,539			68,032
Deferred income tax liabilities:
Intangibles, property, plant and equipment    and other		(33,301	)		(44,591	)
Deferred income tax liabilities		(33,301	)		(44,591	)
Net deferred income tax assets	$	26,238		$	23,441

The classification of our net deferred tax asset is shown below:

December 31,	2019			2018
(Dollars in thousands)
Long-term deferred income tax assets	$	38,607		$	42,105
Long-term deferred income tax liabilities		(12,369	)		(18,664	)
Net deferred tax asset	$	26,238		$	23,441

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amounts of these tax benefits is as follows:

Year Ended December 31,	2019			2018			2017
(Dollars in thousands)
Beginning balance	$	31,036		$	33,054		$	3,446
Increases (decreases) due to foreign currency translations		(632	)		(2,018	)		—
Increases (decreases) as a result of positions    taken during:		—			—			—
Prior periods		(36	)		—			—
Current period		—			—			29,773
Expiration of applicable statutes of limitation		—			—			(165	)
Ending balance	$	30,368		$	31,036		$	33,054