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Fair Value Measurements (Tables)
 3 Months Ended
Mar. 31, 2018
Financial Instruments, Owned, at Fair Value [Abstract]  
Fair Value Measurements Of Asset and Liability Instruments
The carrying amounts of derivative instruments and RINs credit obligations at March 31, 2018 and December 31, 2017 were as follows:
 
 
 
 
Fair Value by Input Level
 
 
Carrying Amount
 
Level 1
 
Level 2
 
Level 3
 
 
(In thousands)
March 31, 2018
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Foreign currency forward contracts
 
$
16,197

 
$
—

 
$
16,197

 
$
—

Commodity forward contracts
 
511

 
—

 
511

 
—

Total assets
 
$
16,708

 
$
—

 
$
16,708

 
$
—

 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
NYMEX futures contracts
 
$
1,309

 
$
1,309

 
$
—

 
$
—

Commodity price swaps
 
3,580

 
—

 
3,580

 
—

Commodity forward contracts
 
3,730

 
—

 
3,730

 
—

RINs credit obligations (1)
 
3,025

 
—

 
3,025

 
—

Total liabilities
 
$
11,644

 
$
1,309

 
$
10,335

 
$
—

December 31, 2017
 
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
 
Commodity forward contracts
 
$
3,840

 
$
—

 
$
3,840

 
$
—

Total assets
 
$
3,840

 
$
—

 
$
3,840

 
$
—

 
 
 
 
 
 
 
 
 
Liabilities:
 
 
 
 
 
 
 
 
NYMEX futures contracts
 
$
3,360

 
$
3,360

 
$
—

 
$
—

Commodity price swaps
 
2,424

 
—

 
2,424

 
—

Commodity forward contracts
 
1,020

 
—

 
1,020

 
—

RINs credit obligations (1)
 
8,931

 
—

 
8,931

 
—

Total liabilities
 
$
15,735

 
$
3,360

 
$
12,375

 
$
—