Business Segments - Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total assets	$ 629,283	$ 679,471	$ 630,267	$ 598,988	$ 621,729	$ 661,735	$ 644,617	$ 634,195	$ 650,035
Operating Segments | North America
Segment Reporting Information [Line Items]
Total assets	424,775				398,432
Operating Segments | EMEA
Segment Reporting Information [Line Items]
Total assets	140,013				160,228
Operating Segments | LATAM
Segment Reporting Information [Line Items]
Total assets	46,822				43,031
Other
Segment Reporting Information [Line Items]
Total assets	$ 17,673				$ 20,038