XML 16 R54.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Fair Value Measurements Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 Property, Plant and Equipment [Member] Minimum [Member] Discounted Cash Flow [Member] Fair Value, Inputs, Level 3 [Member] | Mar. 31, 2014 Property, Plant and Equipment [Member] Maximum [Member] Discounted Cash Flow [Member] Fair Value, Inputs, Level 3 [Member] | Mar. 31, 2014 Mining Properties [Member] Minimum [Member] Discounted Cash Flow [Member] Fair Value, Inputs, Level 3 [Member] | Mar. 31, 2014 Mining Properties [Member] Maximum [Member] Discounted Cash Flow [Member] Fair Value, Inputs, Level 3 [Member] | Dec. 31, 2013 Other Derivative Instrument [Member] | Dec. 31, 2013 Other Derivative Instrument [Member] Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |
Derivative fair value of derivative liability |  |  |  |  | $ 1,590 | $ 0
Discount Rate | 8.50% | 10.50% | 8.50% | 10.50% |  |

X
- Definition Fair value before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226000-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueInputsAssetsQuantitativeInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration