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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2016
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
A summary of financial assets and liabilities that are measured at fair value on a recurring basis, as of June 30, 2016 and December 31, 2015 were as follows (in thousands):
 
Quoted Prices
in Active
Markets
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
 
 
(Level 1)
 
(Level 2)
 
(Level 3)
 
Total
June 30, 2016
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Derivative financial instruments
$

 
$
529

 
$

 
$
529

Investments available-for-sale:
 
 
 
 
 
 
 
Marketable securities - deferred
 
 
 
 
 
 
 
compensation plan

 
46,406

 

 
46,406

Marketable securities - other
3,664

 

 

 
3,664

Liabilities:
 
 
 
 
 
 
 
Marketable securities - deferred
 
 
 
 
 
 
 
compensation plan

 
41,262

 

 
41,262

December 31, 2015
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Derivative financial instruments
$

 
$
210

 
$

 
$
210

Investments available-for-sale:
 
 
 
 
 
 
 
Marketable securities - deferred
 
 
 
 
 
 
 
compensation plan

 
45,254

 

 
45,254

Marketable securities - other
2,387

 

 

 
2,387

Liabilities:
 
 
 
 
 
 
 
Marketable securities - deferred
 
 
 
 
 
 
 
compensation plan

 
43,568

 

 
43,568