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Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2017
Fair Value Disclosures [Abstract]  
Schedule of Fair Value Adjustments to Comprehensive income (Loss)
 
Three months ended September 30,
 
Nine months ended September 30,
In thousands
2017
 
2016
 
2017
 
2016
Rochester royalty obligation
$
—

 
$
(851
)
 
$
(864
)
 
$
(5,787
)
Palmarejo royalty obligation embedded derivative
—

 
(110
)
 
—

 
(5,866
)
Silver and gold options
—


—

 
—

 
(1,582
)
Fair value adjustments, net
$
—

 
$
(961
)
 
$
(864
)
 
$
(13,235
)
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 September 30, 2017
In thousands
Total
 
Level 1
 
Level 2
 
Level 3  
Assets:
 
 
 
 
 
 
 
Equity and debt securities
$
29,125

 
$
22,194

 
$
—

 
$
6,931

Other derivative instruments, net
44

 
—

 
44

 
—

 
$
29,169

 
$
22,194

 
$
44

 
$
6,931

Liabilities:
 
 
 
 
 
 
 
Other derivative instruments, net
$
255

 
$
—

 
$
255

 
$
—


 
 
Fair Value at December 31, 2016
In thousands
Total
 
Level 1
 
Level 2
 
Level 3  
Assets:
 
 
 
 
 
 
 
Equity securities
$
4,488

 
$
4,209

 
$
—

 
$
279

 
$
4,488

 
$
4,209

 
$
—

 
$
279

Liabilities:
 
 
 
 
 
 
 
Rochester royalty obligation
9,287

 
—

 
—

 
9,287

Other derivative instruments, net
762

 
—

 
762

 
—

 
$
10,049

 
$
—

 
$
762

 
$
9,287
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 nine months ended September 30, 2017:
 
Three Months Ended September 30, 2017
In thousands
Balance at the beginning of the period
 
Additions
 
Revaluation
 
Settlements
 
Balance at the
end of the
period
Assets:
 
 
 
 
 
 
 
 
 
Equity and debt securities
$
258

 
$
6,677

 
$
(4
)
 
$
—

 
$
6,931


 
Nine Months Ended September 30, 2017
In thousands
Balance at the beginning of the period
 
Additions
 
Revaluation
 
Settlements
 
Gain on settlement
 
Balance at the
end of the
period
Assets:
 
 
 
 
 
 
 
 
 
 
 
Equity and debt securities
$
279

 
$
6,677

 
$
(25
)
 
$
—

 
$
—

 
$
6,931

Liabilities:
 
 
 
 
 
 
 
 
 
 
 
Rochester royalty obligation
$
9,287

 
—

 
$
864

 
$
(7,819
)
 
(2,332
)
 
$
—
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 September 30, 2017 and December 31, 2016 is presented in the following table:
 
September 30, 2017
In thousands
Book Value
 
Fair Value
 
Level 1
 
Level 2
 
Level 3  
Liabilities:
 
 

 
 
 
 
 
 
5.875% Senior Notes due 2024(1)
$
244,934

 
$
247,161

 
$
—

 
$
247,161

 
$
—


(1)
Net of unamortized debt issuance costs of $5.1 million.

 
December 31, 2016
In thousands
Book Value
 
Fair Value
 
Level 1
 
Level 2
 
Level 3  
Liabilities:
 
 
 
 
 
 
 
 
 
7.875% Senior Notes due 2021(1)
$
175,991

 
$
184,373

 
—

 
$
184,373

 
—


(1)
Net of unamortized debt issuance costs and premium received of $2.0 million.