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RELATED PARTY TRANSACTIONS: (Details) $ in Thousands, MXN in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May. 31, 2010 USD ($) | Mar. 31, 2012 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2005 item | Dec. 31, 2014 USD ($) | Aug. 04, 2014 item | Mar. 31, 2012 MXN | Mar. 31, 2012 USD ($)
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties receivables current: |  |  | $ 29,759 |  |  |  | $ 32,835 |  |  |
Related parties receivable non-current: |  |  | 161,244 |  |  |  | 161,244 |  |  |
Related parties payables: |  |  | 31,870 |  |  |  | 69,083 |  |  |
Grupo Mexico |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties receivables current: |  |  | 800 |  |  |  | 700 |  |  |
Related parties payables: |  |  | 7,400 |  |  |  | 2,800 |  |  |
Total purchases from related parties |  |  | 6,900 | $ 6,900 |  |  |  |  |  |
MGE |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties receivables current: |  |  | 28,200 |  |  |  | 31,900 |  |  |
Related parties receivable non-current: |  |  | 161,200 |  | $ 184,000 |  | 161,200 |  |  |
Related parties payables: |  |  | 15,200 |  |  |  | 45,200 |  |  |
Total purchases from related parties |  |  | 62,900 | 91,700 |  |  |  |  |  |
Sales revenues from related parties |  |  | 39,000 | 48,800 |  |  |  |  |  |
Number of power plants | item |  |  |  |  |  | 2 |  |  |  |
Maximum amount of line of credit granted to related party | $ 350,000 |  |  |  |  |  |  |  |  |
Interest rate (as a percent) | 4.40% |  |  |  | 5.75% |  |  |  |  |
Loan repaid |  | $ 150,000 |  |  |  |  |  |  |  |
Interest earned |  |  | 4,700 | 4,700 |  |  |  |  |  |
MGE | Controladora de Infraestructura Energetica Mexico, S. A. de C. V. |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  |  |  |  |  |  | 99.999% | 99.999%
Value of interest acquired |  |  |  |  |  |  |  |  | MXN 1,928.6 | $ 150,000
MGE | Minera Mexico | Maximum |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Ownership percentage |  |  |  |  |  |  |  |  | 0.001% | 0.001%
Compania Perforadora Mexico S.A.P.I. de C.V. and affiliates |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties receivables current: |  |  | 400 |  |  |  | 200 |  |  |
Total purchases from related parties |  |  | 300 | 1,900 |  |  |  |  |  |
Sales revenues from related parties |  |  | 200 | 300 |  |  |  |  |  |
Equity investment in affiliate |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Loan granted |  |  | $ 56,600 |  |  |  |  |  |  |
Ownership percentage |  |  | 44.20% |  |  |  |  |  |  |
Mexico Proyectos y Desarrollos, S.A. de C.V. and affiliates |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties receivables current: |  |  | $ 300 |  |  |  |  |  |  |
Related parties payables: |  |  |  |  |  |  | 1,700 |  |  |
Total purchases from related parties |  |  | 18,600 | 55,900 |  |  |  |  |  |
Sales revenues from related parties |  |  | 400 | 400 |  |  |  |  |  |
Grupo Mexico and affiliates |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Total purchases from related parties |  |  | 116,400 | 192,600 |  |  |  |  |  |
Sales revenues from related parties |  |  | 110,700 | 71,200 |  |  |  |  |  |
Asarco LLC ("Asarco") |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 8,300 |  |  |  | 13,800 |  |  |
Total purchases from related parties |  |  | 14,700 | 24,600 |  |  |  |  |  |
Sales revenues from related parties |  |  | 71,100 | 21,700 |  |  |  |  |  |
Higher Technology S.A.C. |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 300 |  |  |  | 200 |  |  |
Total purchases from related parties |  |  | 800 | 800 |  |  |  |  |  |
Breaker, S.A. de C.V and affiliates ("Breaker") |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 100 |  |  |  | 700 |  |  |
Total purchases from related parties |  |  | 500 | 3,600 |  |  |  |  |  |
Mexico Transportes Aereos S.A. de C.V. ("Mextransport") |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  |  |  |  |  | 1,300 |  |  |
Total purchases from related parties |  |  | 100 | 1,100 |  |  |  |  |  |
Sales revenues from related parties |  |  | 100 | 100 |  |  |  |  |  |
Ferrocarril Mexicano, S.A. de C.V. |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 200 |  |  |  | 1,800 |  |  |
Total purchases from related parties |  |  | 8,200 | 11,600 |  |  |  |  |  |
Eolica El Retiro, S.A.P.I. de C.V. |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 100 |  |  |  | $ 1,600 |  |  |
Total purchases from related parties |  |  | 4,800 |  |  |  |  |  |  |
Number of wind turbines | item |  |  |  |  |  |  |  | 37 |  |
Servicios y Fabricaciones Mecanicas S.A.C. |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 100 |  |  |  |  |  |  |
Total purchases from related parties |  |  | 400 | 700 |  |  |  |  |  |
Companies with relationship to SCC executive officers' families |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Total purchases from related parties |  |  | 2,000 | 6,000 |  |  |  |  |  |
Sempertrans and affiliates |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Related parties payables: |  |  | 200 |  |  |  |  |  |  |
Total purchases from related parties |  |  | $ 300 | 800 |  |  |  |  |  |
PIGOBA, S.A. de C.V. |  |  |  |  |  |  |  |  |  |
Related party transactions |  |  |  |  |  |  |  |  |  |
Total purchases from related parties |  |  |  | $ 100 |  |  |  |  |  |

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