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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Schedule of Fair Value Adjustments to Comprehensive income (Loss)



	Year ended December 31,
In thousands	2019			2018			2017
Unrealized gain (loss) on equity securities	$	15,348		$	(5,019	)	$	—
Realized gain (loss) on equity securities	860			7,964			—
Zinc options	—			753			—
Interest rate swap, net	(178		)	(60		)	—
Other	—			—			(864		)
Fair value adjustments, net	$	16,030		$	3,638		$	(864	)

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, 2019
In thousands	Total		Level 1		Level 2		Level 3
Assets:
Equity securities	$	35,646	$	35,646	$	—	$	—
Other derivative instruments, net	753		—		753		—
	$	36,399	$	35,646	$	753	$	—
Liabilities:
Silvertip contingent consideration	$	25,000	$	—	$	—	$	25,000
Other derivative instruments, net	275		—		275		—
	$	25,275	$	—	$	275	$	25,000



	Fair Value at December 31, 2018
In thousands	Total		Level 1		Level 2		Level 3
Assets:
Equity and debt securities	$	17,806	$	15,589	$	—	$	2,217
Other derivative instruments, net	914		—		914		—
	$	18,720	$	15,589	$	914	$	2,217
Liabilities:
Silvertip contingent consideration	$	49,276	$	—	$	—	$	49,276
Other derivative instruments, net	644		—		644		—
	$	49,920	$	—	$	644	$	49,276

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 assets and liabilities for the year ended December 31, 2019 and 2018:



	Year Ended December 31, 2019
In thousands	Balance at the beginning of the period		Revaluation		Settlements			Accretion		Balance at the end of the period
Liabilities:
Silvertip contingent consideration	$	49,276	$	—	$	(25,000	)	$	724	$	25,000



	Year Ended December 31, 2018
In thousands	Balance at the beginning of the period		Revaluation			Settlements			Accretion		Balance at the end of the period
Assets:
Equity and debt securities	$	6,891	$	(274	)	$	(4,400	)	$	—	$	2,217
Liabilities:
Silvertip contingent consideration	$	47,965	$	—		$	—		$	1,311	$	49,276

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

The following table sets forth the quantitative and qualitative information related to the unobservable inputs used in the calculation of the Company's non-recurring Level 3 fair value measurements:



Description	Valuation technique	Unobservable input	Range / Weighted Average
Property, plant, and equipment, Mining properties and Right of Use Assets	Discounted cash flow	Discount rate	7.5%
		Long-term silver price per Oz	$17.00
		Long-term zinc price per pound	$1.07
		Long-term lead price per pound	$0.93

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, 2019 and December 31, 2018 is presented in the following table:



	December 31, 2019
In thousands	Book Value		Fair Value		Level 1		Level 2		Level 3
Liabilities:
2024 Senior Notes⁽¹⁾	$	226,885	$	228,585	$	—	$	228,585	$	—
Revolving Credit Facility⁽²⁾	$	—	$	—	$	—	$	—	$	—

⁽¹⁾Net of unamortized debt issuance costs of $3.1 million.

⁽²⁾Unamortized debt issuance costs of $2.3 million included in Other Non-Current Assets.



	December 31, 2018
In thousands	Book Value		Fair Value		Level 1		Level 2		Level 3
Assets:
Manquiri Notes Receivable	$	5,487	$	5,487	$	—	$	—	$	5,487
Liabilities:
2024 Senior Notes⁽¹⁾	$	245,854	$	220,446	$	—	$	220,446	$	—
Revolving Credit Facility⁽²⁾	$	135,000	$	135,000	$	—	$	135,000	$	—

⁽¹⁾Net of unamortized debt issuance costs of $4.1 million.

⁽²⁾Unamortized debt issuance costs of $2.2 million included in Other Non-Current Assets.