Financing Receivables - Summary of Aging of Financing Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due, on non-accrual status	$ 14,585	$ 14,926
Amount not past due	15,859	14,850
Total financing receivables	30,444	29,776
Chile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due, on non-accrual status	12,024	12,610
Amount not past due	13,262	11,758
Total financing receivables	25,286	24,368
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due, on non-accrual status	2,561	2,316
Amount not past due	2,597	3,092
Total financing receivables	5,158	5,408
Financing Receivables, Less Than One Year Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	10,103	9,545
Financing Receivables, Less Than One Year Past Due | Chile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	9,121	8,711
Financing Receivables, Less Than One Year Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	982	834
Financing Receivables, More Than One Year Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	4,482	5,381
Financing Receivables, More Than One Year Past Due | Chile
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	2,903	3,899
Financing Receivables, More Than One Year Past Due | Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Amount past due	$ 1,579	$ 1,482