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Fair Value Measurements
12 Months Ended
Dec. 31, 2018
Fair Value Measurements [Abstract]  
Fair Value Measurements
3. Fair Value Measurements

The Company has various financial instruments that must be measured at fair value on a recurring basis, including marketable debt and equity securities held by Astec Insurance, and marketable equity securities held in an unqualified Supplemental Executive Retirement Plan (“SERP”). The financial assets held in the SERP also constitute a liability of the Company for financial reporting purposes. The Company’s subsidiaries also occasionally enter into foreign currency exchange contracts to mitigate exposure to fluctuations in currency exchange rates.

For cash and cash equivalents, trade receivables, other receivables and accounts payable, the carrying amount approximates the fair value because of the short-term nature of these instruments. Investments are carried at their fair value based on quoted market prices for identical or similar assets or, where no quoted prices exist, other observable inputs for the asset. The fair values of foreign currency exchange contracts are based on quotations from various banks for similar instruments using models with market based inputs.

As indicated in the tables below, the Company has determined that its financial assets and liabilities at December 31, 2018 and 2017 are level 1 and level 2 in the fair value hierarchy:

  
December 31, 2018
 
  
Level 1
  
Level 2
  
Total
 
Financial Assets:
         
Trading equity securities:
         
SERP money market fund
 
$
229
  
$
--
  
$
229
 
SERP mutual funds
  
4,755
   
--
   
4,755
 
Preferred stocks
  
248
   
--
   
248
 
Trading debt securities:
            
Corporate bonds
  
5,398
   
--
   
5,398
 
Municipal bonds
  
--
   
1,546
   
1,546
 
Floating rate notes
  
1,300
   
--
   
1,300
 
U.S. Treasury bills
  
2,210
   
--
   
2,210
 
Asset-backed securities
  
--
   
442
   
442
 
Other
  
--
   
708
   
708
 
Derivative financial instruments
  
--
   
333
   
333
 
Total financial assets
 
$
14,140
  
$
3,029
  
$
17,169
 
Financial Liabilities:
            
SERP liabilities
 
$
--
  
$
6,641
  
$
6,641
 
Total financial liabilities
 
$
--
  
$
6,641
  
$
6,641
 

  
December 31, 2017
 
  
Level 1
  
Level 2
  
Total
 
Financial Assets:
         
Trading equity securities:
         
SERP money market fund
 
$
124
  
$
--
  
$
124
 
SERP mutual funds
  
4,839
   
--
   
4,839
 
Preferred stocks
  
364
   
--
   
364
 
Trading debt securities:
            
Corporate bonds
  
5,661
   
--
   
5,661
 
Municipal bonds
  
--
   
1,912
   
1,912
 
Floating rate notes
  
753
   
--
   
753
 
U.S. Treasury bills
  
1,030
   
--
   
1,030
 
Asset-backed securities
  
--
   
526
   
526
 
Other
  
--
   
968
   
968
 
Total financial assets
 
$
12,771
  
$
3,406
  
$
16,177
 
Financial Liabilities:
            
SERP liabilities
 
$
--
  
$
8,552
  
$
8,552
 
Derivative financial instruments
  
--
   
112
   
112
 
Total financial liabilities
 
$
--
  
$
8,664
  
$
8,664
 

The Company reevaluates the volume of trading activity for each of its investments at the end of each reporting period and adjusts the level within the fair value hierarchy as needed.