Financing Receivables - Summary of Aging of Financing Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due, on non-accrual status	$ 13,238	$ 14,926
Amount not past due	11,011	14,850
Total financing receivables	24,249	29,776
Chile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due, on non-accrual status	10,829	12,610
Amount not past due	8,326	11,758
Total financing receivables	19,155	24,368
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due, on non-accrual status	2,409	2,316
Amount not past due	2,685	3,092
Total financing receivables	5,094	5,408
Financing Receivables, Less Than One Year Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	8,914	9,545
Financing Receivables, Less Than One Year Past Due | Chile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	7,973	8,711
Financing Receivables, Less Than One Year Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	941	834
Financing Receivables, More Than One Year Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	4,324	5,381
Financing Receivables, More Than One Year Past Due | Chile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	2,856	3,899
Financing Receivables, More Than One Year Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	$ 1,468	$ 1,482