Financing Receivables - Summary of Aging of Financing Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total past due (on non-accrual status)	$ 13,173	$ 15,600
Not past due	16,879	13,256
Total financing receivables	30,052	28,856
Chile
Financing Receivable, Past Due [Line Items]
Total past due (on non-accrual status)	12,144	13,982
Not past due	14,336	12,556
Total financing receivables	26,480	26,538
Other
Financing Receivable, Past Due [Line Items]
Total past due (on non-accrual status)	1,029	1,618
Not past due	2,543	700
Total financing receivables	3,572	2,318
Amounts past due less than one year
Financing Receivable, Past Due [Line Items]
Amount past due	10,314	12,243
Amounts past due less than one year | Chile
Financing Receivable, Past Due [Line Items]
Amount past due	9,493	10,687
Amounts past due less than one year | Other
Financing Receivable, Past Due [Line Items]
Amount past due	821	1,556
Amounts past due one year or greater
Financing Receivable, Past Due [Line Items]
Amount past due	2,859	3,357
Amounts past due one year or greater | Chile
Financing Receivable, Past Due [Line Items]
Amount past due	2,651	3,295
Amounts past due one year or greater | Other
Financing Receivable, Past Due [Line Items]
Amount past due	$ 208	$ 62