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Mining Properties | 9 Months Ended
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Sep. 30, 2016
Mining Properties [Abstract] |
MINING PROPERTIES | MINING PROPERTIES Mining properties consist of the following (in thousands):
September 30, 2016 | Palmarejo |  | Rochester |  | Kensington |  | Wharf |  | San Bartolomé |  | La Preciosa |  | Joaquin |  | Coeur Capital |  | Total
Mine development | $ | 169,892 |  |  | $ | 154,997 |  |  | $ | 259,468 |  |  | $ | 33,344 |  |  | $ | 39,685 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 657,386 |
Accumulated amortization | (133,685 | ) |  | (134,429 | ) |  | (147,932 | ) |  | (11,001 | ) |  | (31,793 | ) |  | — |  |  | — |  |  | — |  |  | (458,840 | )
| 36,207 |  |  | 20,568 |  |  | 111,536 |  |  | 22,343 |  |  | 7,892 |  |  | — |  |  | — |  |  | — |  |  | 198,546 |
Mineral interests | 629,303 |  |  | — |  |  | — |  |  | 45,837 |  |  | 12,868 |  |  | 49,085 |  |  | 10,000 |  |  | 37,272 |  |  | 784,365 |
Accumulated amortization | (371,589 | ) |  | — |  |  | — |  |  | (18,335 | ) |  | (11,632 | ) |  | — |  |  | — |  |  | (29,301 | ) |  | (430,857 | )
| 257,714 |  |  | — |  |  | — |  |  | 27,502 |  |  | 1,236 |  |  | 49,085 |  |  | 10,000 |  |  | 7,971 |  |  | 353,508 |
Mining properties, net | $ | 293,921 |  |  | $ | 20,568 |  |  | $ | 111,536 |  |  | $ | 49,845 |  |  | $ | 9,128 |  |  | $ | 49,085 |  |  | $ | 10,000 |  |  | $ | 7,971 |  |  | $ | 552,054 |
December 31, 2015 | Palmarejo |  | Rochester |  | Kensington |  | Wharf |  | San Bartolomé |  | La Preciosa |  | Joaquin |  | Coeur Capital |  | Total
Mine development | $ | 151,828 |  |  | $ | 149,756 |  |  | $ | 238,786 |  |  | $ | 32,318 |  |  | $ | 39,474 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 612,162 |
Accumulated amortization | (131,055 | ) |  | (126,242 | ) |  | (131,236 | ) |  | (5,784 | ) |  | (30,325 | ) |  | — |  |  | — |  |  | — |  |  | (424,642 | )
| 20,773 |  |  | 23,514 |  |  | 107,550 |  |  | 26,534 |  |  | 9,149 |  |  | — |  |  | — |  |  | — |  |  | 187,520 |
Mineral interests | 629,303 |  |  | — |  |  | — |  |  | 45,837 |  |  | 12,868 |  |  | 49,085 |  |  | 10,000 |  |  | 59,343 |  |  | 806,436 |
Accumulated amortization | (348,268 | ) |  | — |  |  | — |  |  | (10,551 | ) |  | (11,400 | ) |  | — |  |  | — |  |  | (34,518 | ) |  | (404,737 | )
| 281,035 |  |  | — |  |  | — |  |  | 35,286 |  |  | 1,468 |  |  | 49,085 |  |  | 10,000 |  |  | 24,825 |  |  | 401,699 |
Mining properties, net | $ | 301,808 |  |  | $ | 23,514 |  |  | $ | 107,550 |  |  | $ | 61,820 |  |  | $ | 10,617 |  |  | $ | 49,085 |  |  | $ | 10,000 |  |  | $ | 24,825 |  |  | $ | 589,219 |
In March 2016, Coeur sold its 2.0% NSR royalty on the Cerro Bayo mine to the operator, a subsidiary of Mandalay Resources Corporation (“Mandalay”), for total consideration of approximately $5.7 million, consisting of $4.0 million in cash and 2.5 million Mandalay shares. The Company recognized a $1.9 million pre-tax gain on this sale. The mineral interest associated with the Cerro Bayo mine was included in the Coeur Capital segment. The operator of the Endeavor mine in Australia, on which the Company has a 100% silver stream, announced in early 2016 a significant curtailment of production due to low lead and zinc prices. As a result, Coeur recorded a $2.5 million write-down of the mineral interest associated with the Endeavor silver stream within the Coeur Capital segment at March 31, 2016. In April 2016, Coeur sold its tiered NSR royalty on the El Gallo mine to the operator, a subsidiary of McEwen Mining Inc., for total consideration of approximately $6.3 million, including $1 million in contingent consideration. In anticipation of this sale, the Company recorded a $1.9 million write-down of the mineral interest within the Coeur Capital segment at March 31, 2016. In April 2016, Coeur closed the sale of its 2.5% NSR royalty on the La Cigarra project to Kootenay Silver Inc. for total consideration of approximately $3.6 million, consisting of $500,000 in cash and 9.6 million Kootenay shares. The Company recognized a $1.2 pre-tax gain on this sale. The mineral interest associated with La Cigarra was included in the Coeur Capital segment. In May 2016, Coeur closed on the sale of its Martha assets and related liabilities in Argentina to Hunt Mining Corp. for total cash consideration of $3.0 million, including $1.5 million received at closing and $1.5 million receivable on the one-year anniversary of the closing. The Company recognized a $5.3 million pre-tax gain on this sale. In July 2016, the Company completed the sale of its NSR royalty on the Correnso mine in New Zealand to the operator, a subsidiary of Oceana Gold Corporation, for total consideration of $5.4 million, including $0.7 million in contingent consideration. The Company recognized a $4.7 million pre-tax gain on this sale.

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