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Note 3 - Properties, Plants, Equipment and Mineral Interests, and Lease Commitments | 12 Months Ended
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Dec. 31, 2015
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment Disclosure [Text Block] | Note 3: Properties, Plants, Equipment and Mineral Interests, and Lease Commitments Properties, Plants, Equipment and Mineral Interests Our major components of properties, plants, equipment, and mineral interests are (in thousands):
|  | December 31, |
|  | 2015 |  |  | 2014 |
Mining properties, including asset retirement obligations |  | $ | 372,935 |  |  | $ | 336,962 |
Development costs |  |  | 291,780 |  |  |  | 250,340 |
Plants and equipment |  |  | 738,065 |  |  |  | 698,100 |
Land |  |  | 21,362 |  |  |  | 15,799 |
Mineral interests |  |  | 907,791 |  |  |  | 929,844 |
Construction in progress |  |  | 295,155 |  |  |  | 224,216 |
|  |  | 2,627,088 |  |  |  | 2,455,261 |
Less accumulated depreciation, depletion and amortization |  |  | 730,277 |  |  |  | 623,697 |
Net carrying value |  | $ | 1,896,811 |  |  | $ | 1,831,564 |
During 2015, we incurred total capital expenditures, excluding non-cash items for additions acquired under capital leases and adjustments for asset retirement obligations, capitalized interest, and deferred taxes, of approximately $137.4 million. The additions included $53.3 million at the Lucky Friday unit, $43.4 million at the Greens Creek unit, $35.5 million at the Casa Berardi unit, and $3.4 million at the San Sebastian unit. Properties, plants, equipment, and mineral interests includes the portion of interest costs incurred on our debt capitalized as a part of the cost of constructing certain qualifying assets. For the years ended December 31, 2015 and 2014, capitalized interest totaled $13.5 million and $11.8 million, respectively. Capital Leases We periodically enter into lease agreements, primarily for equipment at our Greens Creek, Lucky Friday and Casa Berardi units, which we have determined to be capital leases. As of December 31, 2015 and 2014, we have recorded $39.9 million and $39.5 million, respectively, for the gross amount of assets acquired under the capital leases and $24.4 million and $15.3 million, respectively, in accumulated depreciation on those assets, classified as plants and equipment in Properties, plants, equipment and mineral interests. See Note 6 for information on future obligations related to our capital leases. Operating Leases We enter into operating leases during the normal course of business. During the years ended December 31, 2015, 2014 and 2013, we incurred expenses of $3.8 million, $3.5 million and $3.1 million, respectively, for these leases. At December 31, 2015, future obligations under our non-cancelable operating leases were as follows (in thousands):
Year ending December 31, |  |  |  |
2016 |  | $ | 5,046 |
2017 |  |  | 3,035 |
2018 |  |  | 1,049 |
2019 |  |  | 1,043 |
2020 |  |  | 1,035 |
Thereafter |  |  | 1,196 |
Total |  | $ | 12,404 |

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13-14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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