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Fair Value of Financial Instruments (Tables)
3 Months Ended
Mar. 31, 2016
Fair Value of Financial Instruments [Abstract]  
Available-for-sale Securities



 

 

 

 

 



 

 



March 31,

 

December 31,



2016

 

2015

Amortized cost

$

455,072 

 

$

1,040,850 

Gross unrealized gains (losses)

 

607 

 

 

(2,712)

Fair market value

$

455,679 

 

$

1,038,138 



Unrealized Gains (Losses) on Investments held in Rabbi Trust



 

 

 

 

 



 

 



Three months ended March 31,



2016

 

2015

Unrealized gains (losses) on investments held in rabbi trust

$

102 

 

$

139