Financing Receivables - Allowance For Credit Losses Rollforward (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ (6,395)	$ (6,472)
Charge-offs	1,939	1,375
Recoveries	0	0
Reclassifications	0	0
Provision	(1,891)	(1,215)
Currency adjustments	283	436
Ending balance	(6,064)	(5,876)
Chile
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	(6,108)	(6,107)
Charge-offs	1,438	1,338
Recoveries	0	0
Reclassifications	0	0
Provision	(1,245)	(1,233)
Currency adjustments	280	434
Ending balance	(5,635)	(5,568)
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	(287)	(365)
Charge-offs	501	37
Recoveries	0	0
Reclassifications	0	0
Provision	(646)	18
Currency adjustments	3	2
Ending balance	$ (429)	$ (308)