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Commitments And Contingencies (Tables)
 3 Months Ended
Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]  
Environmental
The following table summarizes environmental remediation activity during the three months ended March 31, 2018 and 2017.
 
2018

 
2017

Beginning balance – January 1

$524

 

$562

Reductions for payments made
(7
)
 
(11
)
Changes in estimates
22

 
(26
)
Ending balance – March 31

$539

 

$525
Product Warranties
The following table summarizes product warranty activity recorded during the three months ended March 31, 2018 and 2017.
 
2018

 
2017

Beginning balance – January 1

$1,211

 

$1,414

Additions for current year deliveries
70

 
70

Reductions for payments made
(32
)
 
(74
)
Changes in estimates
(101
)
 
(65
)
Ending balance – March 31

$1,148

 

$1,345
Financing Commitments
The estimated earliest potential funding dates for these commitments as of March 31, 2018 are as follows:
  
Total

April through December 2018

$1,354

2019
2,960

2020
1,699

2021
1,632

2022
994

Thereafter
1,399

 

$10,038