Debt - Lines Of Credit (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Credit line capacity	$ 13,261,000
Balance Outstanding	7,893,000	7,658,000
Itau Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	6.00%
Credit line capacity	1,800,000
Balance Outstanding	918,000	965,000
Bank of Chile
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	6.34%
Credit line capacity	2,250,000
Balance Outstanding	805,000	1,410,000
BICE Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	6.16%
Credit line capacity	1,700,000
Balance Outstanding	1,340,000	1,249,000
BBVA Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	5.00%
Credit line capacity	2,300,000
Balance Outstanding	1,723,000	795,000
Penta Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	7.34%
Credit line capacity	1,200,000
Balance Outstanding	962,000	1,008,000
Security Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	6.16%
Credit line capacity	940,000
Balance Outstanding	334,000	361,000
Estado Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	5.30%
Credit line capacity	2,800,000
Balance Outstanding	1,811,000	1,870,000
BBVA Bank
Line of Credit Facility [Line Items]
Interest rate on borrowings at March 31, 2015	4.75%
Credit line capacity	271,000
Balance Outstanding	$ 0	$ 0