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Supplemental Cash Flow Information (Tables)
 12 Months Ended
Dec. 31, 2016
Supplemental Cash Flow Elements [Abstract]  
Summary of Supplemental Cash Flow Information

 

 

 

2016

 

 

2015

 

Net interest received in cash, included in operations

 

$

(206

)

 

$

(207

)

Taxes paid

 

 

5,699

 

 

 

3,623

 

Patent acquisition liability

 

 

1,000

 

 

 

9,000