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Income taxes (Tables)
12 Months Ended
Dec. 31, 2017
Income Tax Disclosure [Abstract]  
Components of Provision for Income Taxes from Continuing Operations
The following table summarizes the components of the provision for income taxes from continuing operations:
 
2017
 
2016
 
2015
 
(Dollars in thousands)
Current:
 
 
 
 
 
Federal
$
133,621

 
$
2,344

 
$
(4,700
)
State
5,213

 
5,230

 
2,377

Foreign
35,444

 
28,842

 
53,151

Deferred:
 
 
 
 
 
Federal
(258,247
)
 
(25,141
)
 
(35,750
)
State
1,459

 
(1,837
)
 
(5,012
)
Foreign
212,158

 
(1,364
)
 
(2,228
)
 
$
129,648

 
$
8,074

 
$
7,838

Summaries of U.S. and Non-U.S. Components of Income from Continuing Operations Before Taxes
The following table summarizes the United States and non-United States components of income from continuing operations before taxes:
 
2017
 
2016
 
2015
 
(Dollars in thousands)
United States
$
37,528

 
$
(29,988
)
 
$
(19,550
)
Other
247,383

 
275,713

 
264,196

 
$
284,911

 
$
245,725

 
$
244,646

Reconciliations Between Statutory Federal Income Tax Rate and Effective Income Tax Rate
Reconciliations between the statutory federal income tax rate and the effective income tax rate are as follows:
 
2017
 
2016
 
2015
Federal statutory rate
35.0
 %
 
35.0
 %
 
35.0
 %
Tax effect of international items
(25.7
)
 
(27.5
)
 
(28.4
)
Impacts of U.S. tax reform
37.9

 

 

Excess tax benefits related to share-based compensation
(2.3
)
 

 

State taxes, net of federal benefit
0.1

 
0.9

 
(0.7
)
Uncertain tax contingencies
(1.8
)
 
(3.6
)
 
(1.9
)
Contingent consideration reversals
0.4

 
(1.2
)
 
(0.7
)
Other, net
1.9

 
(0.3
)
 
(0.1
)
 
45.5
 %
 
3.3
 %
 
3.2
 %
Deferred Tax Assets and Liabilities
The following table summarizes significant components of the Company’s deferred tax assets and liabilities at December 31, 2017 and 2016:
 
2017
 
2016
 
(Dollars in thousands)
Deferred tax assets:
 
 
 
Tax loss and credit carryforwards
$
210,055

 
$
136,046

Pension
28,147

 
46,563

Reserves and accruals
62,378

 
52,343

Other
3,619

 
17,704

Less: valuation allowances
(104,799
)
 
(104,520
)
Total deferred tax assets
199,400

 
148,136

Deferred tax liabilities:
 
 
 
Property, plant and equipment
22,299

 
32,209

Intangibles — stock acquisitions
553,245

 
321,707

Unremitted foreign earnings
223,494

 
63,419

Other
228

 
466

Total deferred tax liabilities
799,266

 
417,801

Net deferred tax liability
$
(599,866
)
 
$
(269,665
)
Uncertain Tax Positions for Liabilities Associated with Unrecognized Tax Benefits
Uncertain Tax Positions: The following table is a reconciliation of the beginning and ending balances for liabilities associated with unrecognized tax benefits for the twelve month periods ended December 31, 20172016 and 2015:
 
 
2017
 
2016
 
2015
 
(Dollars in thousands)
Balance at January 1
$
15,054

 
$
34,381

 
$
51,084

Increase in unrecognized tax benefits related to prior years

 

 
2,077

Decrease in unrecognized tax benefits related to prior years

 
(13,083
)
 
(15,372
)
Unrecognized tax benefits related to the current year
895

 
705

 
647

Reductions in unrecognized tax benefits due to settlements

 
(2,121
)
 

Reductions in unrecognized tax benefits due to lapse of applicable statute of limitations
(6,813
)
 
(4,840
)
 
(2,337
)
Increase (decrease) in unrecognized tax benefits due to foreign currency translation
200

 
12

 
(1,718
)
Balance at December 31
$
9,336

 
$
15,054

 
$
34,381

Examinations by Major Tax Jurisdictions
The taxable years for which the applicable statute of limitations remains open by major tax jurisdictions are as follows:
 
Beginning
 
Ending
United States
2014
 
2017
Canada
2005
 
2017
China
2012
 
2017
Czech Republic
2014
 
2017
France
2015
 
2017
Germany
2011
 
2017
India
2002
 
2017
Ireland
2013
 
2017
Italy
2012
 
2017
Malaysia
2013
 
2017
Singapore
2013
 
2017