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Fair Value Measurements (Tables)
6 Months Ended
Jun. 30, 2018
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, 2018 and December 31, 2017, 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, 2018
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Derivative financial instruments
$

 
$
278

 
$

 
$
278

Investments:
 
 
 
 
 
 
 
Cash surrender value of life insurance policies - deferred compensation plan

 
30,706

 

 
30,706

Marketable securities - other
54

 

 

 
54

Liabilities:
 
 
 
 
 
 
 
Deferred compensation plan

 
26,158

 

 
26,158

 
 
 
 
 
 
 
 
December 31, 2017
 
 
 
 
 
 
 
Assets:
 
 
 
 
 
 
 
Investments:
 
 
 
 
 
 
 
Cash surrender value of life insurance policies - deferred compensation plan
$

 
$
30,351

 
$

 
$
30,351

Marketable securities - other
113

 

 

 
113

Liabilities:
 
 
 
 
 
 
 
Derivative financial instruments

 
487

 

 
487

Deferred compensation plan

 
26,797

 

 
26,797