Commitments and Contingencies (Tables)
 12 Months Ended
Dec. 31, 2016
Commitments And Contingencies Disclosure [Abstract]  
Changes in Accrued Environmental Remediation and Related Costs

The table below presents a summary of the activity in our accrued environmental costs during the past three years.  The amount charged to expense is included in corporate expense on our Consolidated Statements of Operations.

 

 

Years ended December 31,

 

 

2014

 

 

2015

 

 

2016

 

 

(In thousands)

 

Balance at the beginning of the year

$

113,636

 

 

$

110,015

 

 

$

113,133

 

Additions charged to expense, net

 

6,485

 

 

 

4,370

 

 

 

5,152

 

Payments, net

 

(10,106

)

 

 

(1,252

)

 

 

(1,627

)

 

 

 

 

 

 

 

 

 

 

 

 

Balance at the end of the year

$

110,015

 

 

$

113,133

 

 

$

116,658

 

 

 

 

 

 

 

 

 

 

 

 

 

Amounts recognized in the balance sheet:

 

 

 

 

 

 

 

 

 

 

 

Current liability

$

6,984

 

 

$

8,668

 

 

$

13,350

 

Noncurrent liability

 

103,031

 

 

 

104,465

 

 

 

103,308

 

 

 

 

 

 

 

 

 

 

 

 

 

Balance at the end of the year

$

110,015

 

 

$

113,133

 

 

$

116,658