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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2015
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
September 30, 2015 and December 31, 2014:
 
  
Level 1
 
Level 2
 
Level 3
 
Total
September 30, 2015
 
 
 
 
 
 
 
Corporate bonds and notes
$

 
$
21,336

 
$

 
$
21,336

Municipal bonds

 
5,700

 

 
5,700

 
Total
$

 
$
27,036

 
$

 
$
27,036

 
  
Level 1
 
Level 2
 
Level 3
 
Total
December 31, 2014
 
 
 
 
 
 
 
Corporate bonds and notes
$

 
$
19,838

 
$

 
$
19,838

Municipal bonds

 
6,318

 

 
6,318

 
Total
$

 
$
26,156

 
$

 
$
26,156