Capital leases including purchase options.

No definition available.

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- Definition

Total debt less unencumbered cash/EBITDA.

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No definition available.

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- References

No definition available.

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- Definition

Percentage of Notes Redeemable

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No definition available.

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- Definition

Percentage of underwriting discount on senior notes.

+ References

No definition available.

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- Definition

Amount of long-term debt due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount of liabilities assumed at the acquisition date.

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- Definition

Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

+ References

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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

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- Definition

Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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-Number 210
-Section 02
-Paragraph 19
-Article 5

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- Definition

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- Definition

Amount of minimum lease payments for capital leases.

+ References

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- Definition

Amount necessary to reduce net minimum lease payments to present value for capital leases.

+ References

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- Definition

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

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-SubTopic 470
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-Subparagraph e
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- Definition

Percentage of principal amount of debt redeemed.

+ References

No definition available.

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- Definition

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

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- Definition

Amount of interest capitalized during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Allowance for Funds Used during Construction
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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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-Topic 225
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-Paragraph 2
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The amount of cash or cash equivalents contributed by the entity to fund its pension plans.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
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Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) $ in Thousands		12 Months Ended
	Apr. 12, 2013 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2017	Dec. 31, 2016	Feb. 23, 2016 USD ($)	Jun. 15, 2015 USD ($)	Feb. 28, 2014 USD ($)	Apr. 30, 2013 USD ($)
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Proceeds from Issuance of Senior Long-term Debt	$ 490,000
Underwriting Discount on Senior Notes									2.00%
Capital Leases Including Purchase Option		$ 17,600
Capital Lease Obligations, Current		8,735	$ 9,491
Capital Lease Obligations, Noncurrent		8,841	13,650
Capital Lease Obligations		17,576	23,100
Capital Leases, Future Minimum Payments Due		18,733
Capital Leases, Future Minimum Payments, Interest Included in Payments		1,157
Subsequent Event [Member]
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Leverage Ratio				4.00	5.00
Senior Notes [Member]
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Debt Instrument, Face Amount	$ 500,000
Pension Contributions			6,500
Debt Instrument, Unamortized Discount		6,800							$ 10,000
Debt Instrument, Interest Rate, Stated Percentage	6.875%
Interest Expense, Debt		13,500	11,800
Interest Costs Capitalized		$ 22,700	$ 24,600
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed		100.00%
Percentage of Notes Redeemable		35.00%
Debt Instrument, Redemption Price, Percentage		101.00%
Revolving Credit Facility [Member]
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity								$ 100,000
Long-term Line of Credit		$ 0
Revolving Credit Facility [Member] \| Subsequent Event [Member]
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Long-term Line of Credit						$ 0
Revett Mining Company Inc [Member]
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities							$ 22,549
Revett Mining Company Inc [Member] \| Notes Payable Assumed [Member]
Note 6 - Senior Notes, Credit Facilities, and Capital Leases (Details) [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.25%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		$ 3,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt		2,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		$ 500