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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2017
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table provides the assets and liabilities reported at fair value and measured on a recurring basis as of December 31, 2017 and 2016:
 
 
 
 
Fair Value Measurements Using
  
 
Total
 
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
 
Significant Other
Observable Inputs
(Level 2)
 
Significant
Unobservable
Inputs
(Level 3)
 
 
 
 
 
 
 
 
 
December 31, 2017
 
 
 
 
 
 
 
 
Asset derivatives
 
$
712

 
$
—

 
$
712

 
$
—

Liability derivatives
 
(408
)
 
—

 
(408
)
 
—

Bank acceptances
 
16,092

 
—

 
16,092

 
—

Rabbi trust assets
 
2,554

 
2,554

 
—

 
—

 
 
$
18,950

 
$
2,554

 
$
16,396

 
$
—

December 31, 2016
 
 
 
 
 
 
 
 
Asset derivatives
 
$
397

 
$
—

 
$
397

 
$
—

Liability derivatives
 
(1,754
)
 
—

 
(1,754
)
 
—

Bank acceptances
 
9,690

 
—

 
9,690

 
—

Rabbi trust assets
 
2,216

 
2,216

 
—

 
—

 
 
$
10,549

 
$
2,216

 
$
8,333

 
$
—