Accretion Of Royalty Obligation.

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- Definition

Additional Long term debt and capital lease obligation.

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No definition available.

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Annual Inflation Compounding Adjustment

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- Definition

Cash payments on gold production royalty

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No definition available.

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- Definition

Debt Instrument, Commodity Royalty Payments

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Debt Instrument, Number of Lines of Credits, Outstanding

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Debt Instrument, Periodic Amortization Payment, Percent

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Debt Instrument, Prepayment Premium, Percent, Payment After Two Years

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Debt Instrument, Prepayment Premium, Percent, Payment within Twelve Months and Two Years

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- Definition

Debt Instrument, Redemption Period, Low Range

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Debt Instrument, Redemption Period, Upper Range

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- Definition

Debt Instrument, Redemption Price After Initial Redemption Period, Percentage

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- Definition

Long term debt and capital lease obligation.

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No definition available.

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- Definition

Minimum obligation paid in monthly payments.

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- Definition

Payable ounces under royalty obligation

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No definition available.

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- Definition

Percentage of actual gold production.

+ References

No definition available.

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- Definition

Price per ounce under agreement

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No definition available.

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- Definition

Remaining Minimum Obligation Under Royalty Agreements.

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No definition available.

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- Definition

Remaining ounces under royalty obligation

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No definition available.

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- Definition

Amount of the total principal payments made during the annual reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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-Name Accounting Standards Codification
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt (Details Textual)			3 Months Ended
Debt (Details Textual)	Jun. 23, 2015 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2016 USD ($) debt oz	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)
Debt and capital lease obligations (Textual) [Abstract]
Number of lines of credits, outstanding \| debt			2
Percentage of Actual Gold Production			50.00%
Price per ounce under agreement			$ 416
Cash payments on gold production royalty			$ 9,131,000	$ 10,368,000
Debt Instrument, Commodity Royalty Payments \| oz			379,006
Remaining ounces under royalty obligation \| oz			20,994
Additional Long term debt and capital lease obligations(Textual) [Abstract]
Accretion of Royalty Obligation			$ 765,000	2,031,000
Remaining Minimum Obligation Under Royalty Agreements			9,800,000		$ 15,200,000
Convertible Senior Notes Due March 2028 [Member]
Debt and capital lease obligations (Textual) [Abstract]
Debt Instrument, Face Amount					712,000
Banco de Credito Line of Credit [Member]
Debt and capital lease obligations (Textual) [Abstract]
Borrowing under term facility			$ 27,000,000
Palmarejo gold production royalty [Member]
Debt and capital lease obligations (Textual) [Abstract]
Effective interest rate on the notes			30.50%
Palmarejo gold production royalty [Member]
Debt and capital lease obligations (Textual) [Abstract]
Payment made for gold on the end of royalty obligation \| oz			4,167
Annual Inflation Compounding Adjustment			1.00%
Palmarejo gold production royalty [Member] \| Maximum [Member]
Debt and capital lease obligations (Textual) [Abstract]
Payable ounces under royalty obligation \| oz			400,000
Convertible Senior Notes Due March 2028 [Member]
Debt and capital lease obligations (Textual) [Abstract]
Debt Instrument, Repurchased Face Amount		$ 4,600,000		4,600,000
Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Unamortized Discount (Premium), Net			$ 5,100,000		5,300,000
Debt and capital lease obligations (Textual) [Abstract]
Redemption period, low range			30 days
Redemption period, upper range			60 days
Redemption price after initial redemption period (as a percent)			100.00%
Short Term Credit Agreement [Member]
Debt Instrument [Line Items]
Unamortized debt issuance expense			$ 4,700,000		$ 5,000,000
Debt and capital lease obligations (Textual) [Abstract]
Short-term Debt		$ 50,000,000.0		$ 50,000,000.0
Term Loan due 2020 [Member] \| Secured Debt [Member]
Debt and capital lease obligations (Textual) [Abstract]
Long-term Debt	$ 100,000,000
Prepayment premium for payments between first and second anniversary (as a percent)	105.00%
Prepayment premium for payments after second anniversary (as a percent)	103.00%
Amortization payments (as a percent)	1.00%
Debt Instrument, Annual Principal Payment			800,000
Eurodollar [Member] \| Short Term Credit Agreement [Member]
Debt and capital lease obligations (Textual) [Abstract]
Basis spread on variable rate (as a percent)		2.50%
Eurodollar [Member] \| Term Loan due 2020 [Member] \| Secured Debt [Member]
Debt and capital lease obligations (Textual) [Abstract]
Basis spread on variable rate (as a percent)	1.00%
Adjusted Eurodollar [Member] \| Term Loan due 2020 [Member] \| Secured Debt [Member]
Debt and capital lease obligations (Textual) [Abstract]
Basis spread on variable rate (as a percent)	8.00%
Reported Value Measurement [Member] \| Convertible Senior Notes Due March 2028 [Member]
Debt and capital lease obligations (Textual) [Abstract]
Debt Instrument, Face Amount			$ 712,000