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Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Rent Expense Operating lease rental expense for factories, service and distribution locations, offices, and equipment was as follows:
 
Year Ended December 31,
 
2018
 
2017
 
2016
 
 
 
 
 
 
 
(in thousands)
Rental expense
$
24,453

 
$
14,824

 
$
14,232
Schedule of Future Minimum Rental Payments for Operating Leases Future minimum lease payments at December 31, 2018, under noncancelable operating leases with initial or remaining terms in excess of one year are as follows:
Year Ending December 31,
 
Minimum Payments
 
 
(in thousands)
2019
 
$
17,456

2020
 
14,234

2021
 
12,007

2022
 
9,764

2023
 
9,895

Beyond 2023
 
26,703

Future minimum lease payments
 
$
90,059
Schedule of Line of Credit Facilities Our available lines of credit, outstanding standby LOCs, and bonds are as follows:
 
At December 31,
 
2018
 
2017
 
 
 
 
 
(in thousands)
Credit facilities(1)
 
 
 
Multicurrency revolving line of credit
$
500,000

 
$
500,000

Long-term borrowings
—

 
(125,414
)
Standby LOCs issued and outstanding
(40,983
)
 
(31,881
)
Net available for additional borrowings under the multi-currency revolving line of credit
$
459,017

 
$
342,705

 
 
 
 
Net available for additional standby LOCs under sub-facility
$
259,017

 
$
218,119

 
 
 
 
Unsecured multicurrency revolving lines of credit with various financial institutions
 
 
 
Multicurrency revolving line of credit
$
108,039

 
$
110,477

Standby LOCs issued and outstanding
(19,386
)
 
(21,030
)
Short-term borrowings(2)
(2,232
)
 
(916
)
Net available for additional borrowings and LOCs
$
86,421

 
$
88,531

 
 
 
 
Unsecured surety bonds in force
$
94,365

 
$
51,344



(1) 
Refer to "Note 6: Debt" for details regarding our secured credit facilities, including the refinancing of the 2015 credit facility.
(2) 
Short-term borrowings are included in other current liabilities on the Consolidated Balance Sheets.
Schedule of Warranty Accruals A summary of the warranty accrual account activity is as follows:
 
Year Ended December 31,
 
2018
 
2017
 
2016
 
 
 
 
 
 
 
(in thousands)
Beginning balance
$
34,862

 
$
43,302

 
$
54,512

Assumed liabilities from acquisition
12,946

 
—

 
—

New product warranties
3,772

 
7,849

 
7,987

Other adjustments and expirations, net
22,741

 
(393
)
 
5,933

Claims activity
(12,753
)
 
(18,094
)
 
(24,364
)
Effect of change in exchange rates
(1,125
)
 
2,198

 
(766
)
Ending balance
60,443

 
34,862

 
43,302

Less: current portion of warranty
47,205

 
21,150

 
24,874

Long-term warranty
$
13,238

 
$
13,712

 
$
18,428
Warranty Expense Warranty expense was as follows:
 
Year Ended December 31,
 
2018
 
2017
 
2016
 
 
 
 
 
 
 
(in thousands)
Total warranty expense (benefit)
$
26,513

 
$
(2,054
)
 
$
13,920
Health Benefit Plan Costs and Incurred But Not Reported Accrual Balance Plan costs were as follows:
 
Year Ended December 31,
 
2018
 
2017
 
2016
 
 
 
 
 
 
 
(in thousands)
Plan costs
$
41,543

 
$
30,521

 
$
27,276


IBNR accrual, which is included in wages and benefits payable, was as follows:
 
At December 31,
 
2018
 
2017
 
 
 
 
 
(in thousands)
IBNR accrual
$
3,643

 
$
2,664