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Stock Compensation (Tables)
3 Months Ended
Mar. 31, 2017
Stock Compensation [Abstract]  
Schedule Of Weighted-Average Assumptions Used To Determine The Fair Value Of Options



 

 

 

 

 

 

 

 

 

 

 



Three Months Ended

 

Three Months Ended



March 31, 2017

 

March 31, 2016



Stock Options

 

ESPP Options

 

Stock Options

 

ESPP Options

Expected life of options

 

4.8 Years

 

 

0.5 Years

 

 

4.8 Years

 

 

0.5 Years

Expected stock price volatility

 

0.40 

 

 

0.35 

 

 

0.40 

 

 

0.30 

Risk-free interest rate

 

1.87% 

 

 

0.62% 

 

 

1.20% 

 

 

0.49% 







 

Summary Of Total Stock Compensation Expenses



 

 

 

 

 



Three Months Ended



March 31,



2017

 

2016

RSA, PSA, RSU, and PSU expense

$

1,346 

 

$

1,088 

Stock option and ESPP option expense

 

518 

 

 

382 

Total stock compensation expense

$

1,864 

 

$

1,470