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Segment Information (Tables)
12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Long-Lived Assets By Geographic Region The following table presents long-lived assets by geographic region based on the location of the assets.
 
Years ended 
 December 31,
 
(dollars in thousands)
2018

2017

United States
$
37,015

$
39,071

Other countries
3,016

3,172

Total property and equipment
$
40,031

$
42,243