Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]

Fair Value Inputs, Assets, Quantitative Information [Table Text Block]

Description	Valuation technique	Unobservable input	Range / Weighted Average
Property, plant, and equipment and Mining properties	Discounted cash flow	Discount rate	8.0% - 10.75%
		Long-term silver price	$19.00
		Long-term gold price	$1,275

Description	Valuation technique	Unobservable input	Range / Weighted Average
Property, plant, and equipment and Mining properties	Discounted cash flow	Discount rate	8.5% - 10.5%
		Long-term silver price	$25.00
		Long-term gold price	$1,450

Schedule of Fair Value Adjustments to Comprehensive income (Loss)

The following table presents the components of Fair value adjustments, net:

	Year ended December 31,
In thousands	2014			2013			2012
Palmarejo royalty obligation embedded derivative	$	(2,001	)	$	76,200		$	(31,053	)
Rochester NSR royalty obligation	3,653			416			—
Silver and gold options	1,058			7,119			4,302
Foreign exchange contracts	908			(967		)	3,264
Fair value adjustments, net	$	3,618		$	82,768		$	(23,487	)

Financial assets and liabilities measured at fair value on recurring basis

The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis (at least annually) by level within the fair value hierarchy. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement:

	Fair Value at December 31, 2014
In thousands	Total		Level 1		Level 2		Level 3
Assets:
Short-term investments	$	138	$	138	$	—	$	—
Equity securities	5,982		4,603		—		1,379
Silver and gold options	3,882		—		3,882		—
	$	10,002	$	4,741	$	3,882	$	1,379
Liabilities:
Palmarejo royalty obligation embedded derivative	$	21,912	$	—	$	—	$	21,912
Rochester NSR royalty obligation	15,370		—		—		15,370
Silver and gold options	1,039		—		1,039		—
Other derivative instruments, net	805		—		805		—
	$	39,126	$	—	$	1,844	$	37,282

	Fair Value at December 31, 2013
In thousands	Total		Level 1		Level 2		Level 3
Assets:
Equity securities	$	14,521	$	14,521	$	—	$	—
Silver and gold options	135		—		135		—
	$	14,656	$	14,521	$	135	$	—
Liabilities:
Palmarejo royalty obligation embedded derivative	$	40,338	$	—	$	—	$	40,338
Rochester NSR royalty obligation	21,630		—		—		21,630
Other derivative instruments, net	1,591		—		1,591		—
	$	63,559	$	—	$	1,591	$	61,968

Changes in the fair value of the Company's Level 3 financial liabilities

The following tables present the changes in the fair value of the Company's Level 3 financial liabilities for the years ended December 31, 2014 and 2013:

	Year ended December 31, 2014
In thousands	Balance at the beginning of the period		Additions		Revaluation			Settlements			Transfers from Level 1		Balance at the end of the period
Palmarejo royalty obligation embedded derivative	$	40,338	$	—	$	2,001		$	(20,427	)	$	—	$	21,912
Rochester NSR royalty obligation	21,630		—		(3,653		)	(2,607		)	—		15,370
Equity securities	—		69		(55		)	—			1,365		1,379

	Year ended December 31, 2013
In thousands	Balance at the beginning of the period		Additions		Revaluation			Settlements			Transfers from Level 2		Balance at the end of the period
Palmarejo royalty obligation embedded derivative	$	—	$	—	$	(76,200	)	$	(28,560	)	$	145,098	$	40,338
Rochester NSR royalty obligation	—		22,046		(416		)	—			—		21,630

Financial Assets and Liabilities not Measured at Fair Value

The fair value of financial assets and liabilities carried at book value in the financial statements at December 31, 2014 and December 31, 2013 is presented in the following table:

	December 31, 2014
In thousands	Book Value		Fair Value		Level 1		Level 2		Level 3
Liabilities:
3.25% Convertible Senior Notes due 2028	$	5,334	$	4,979	$	—	$	4,979	$	—
7.875% Senior Notes due 2021	437,454		343,305		—		343,305		—
San Bartolomé Line of Credit	14,785		14,785		—		14,785		—
Palmarejo gold production royalty obligation	34,047		38,290		—		—		38,290

	December 31, 2013
In thousands	Book Value		Fair Value		Level 1		Level 2		Level 3
Liabilities:
3.25% Convertible Senior Notes due 2028	$	5,334	$	5,067	$	5,067	$	—	$	—
7.875% Senior Notes due 2021	300,000		307,314		307,314		—		—
Palmarejo gold production royalty obligation	51,193		65,212		—		—		65,212