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Fair Value of Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2017
Fair Value of Financial Instruments [Abstract]  
Available-for-sale Securities



 

 

 

 

 



 

 



June 30,

 

December 31,



2017

 

2016

Amortized cost

$

395,055 

 

$

455,109 

Unrealized gains (losses)

 

(589)

 

 

(218)

Fair market value

$

394,466 

 

$

454,891 



Unrealized Gain (Loss) on Available-for-sale Securities



 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 

 

 

 



Three months ended June 30,

 

Six months ended June 30,



2017

 

2016

 

2017

 

2016

Unrealized gains (losses) on available-for-sale securities

$

(95)

 

$

857 

 

$

(371)

 

$

3,933 

Unrealized gains (losses) on available-for-sale securities, net of tax

$

(58)

 

$

509 

 

$

(240)

 

$

2,402 



Unrealized Gains (Losses) on Trading Securities held in Rabbi Trust



 

 

 

 

 

 

 

 

 

 

 



 

 

 

 

 

 

 

 



Three months ended June 30,

 

Six months ended June 30,



2017

 

2016

 

2017

 

2016

Unrealized gains (losses) on trading securities held in rabbi trust

$

359 

 

$

183 

 

$

822 

 

$

286