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Commitments
12 Months Ended
Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]  
Commitments

Note 8 - Commitments

Our operating lease agreements require minimum annual payments as follows (in thousands):

 

 

Year Ending

 

 

 

 

December 31,

 

 

 

 

2018

 

$

6,231

 

2019

 

 

5,483

 

2020

 

 

4,515

 

2021

 

 

3,864

 

2022

 

 

2,377

 

Thereafter

 

 

1,201

 

 

 

$

23,671

 

 

Rent expense was approximately $4.9 million, $4.5 million, and $4.1 million for the years ended December 31, 2017, 2016 and 2015, respectively.