Debt - Lines Of Credit (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Credit line capacity	$ 190,728,000
Balance Outstanding	$ 47,661,000	$ 82,668,000
JPMorgan Chase
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	3.85%
Credit line capacity	$ 175,000,000
Balance Outstanding	$ 38,135,000	72,107,000
Itau Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.50%
Credit line capacity	$ 1,450,000
Balance Outstanding	$ 1,000,000	282,000
Bank of Chile
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	6.60%
Credit line capacity	$ 2,500,000
Balance Outstanding	$ 2,493,000	2,313,000
BICE Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.50%
Credit line capacity	$ 2,000,000
Balance Outstanding	$ 314,000	1,502,000
BBVA Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.50%
Credit line capacity	$ 2,300,000
Balance Outstanding	1,436,000	1,825,000
Security Bank
Line of Credit Facility [Line Items]
Balance Outstanding	$ 0	145,000
Estado Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.50%
Credit line capacity	$ 2,400,000
Balance Outstanding	$ 1,353,000	2,210,000
Santander Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.50%
Credit line capacity	$ 3,000,000
Balance Outstanding	$ 1,325,000	1,345,000
Scotiabank
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.00%
Credit line capacity	$ 1,300,000
Balance Outstanding	$ 1,287,000	939,000
Corpbanca
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	5.00%
Credit line capacity	$ 500,000
Balance Outstanding	$ 318,000	0
Banco Bilbao Vizcaya
Line of Credit Facility [Line Items]
Interest rate on borrowings at June 30, 2016	2.90%
Credit line capacity	$ 278,000
Balance Outstanding	$ 0	$ 0