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Fair Value of Financial Instruments (Tables)
 6 Months Ended
Jun. 30, 2015
Fair Value Disclosures [Abstract]  
Fair value of assets and liabilities
The following tables present the fair value and hierarchy levels for the Company's assets and liabilities, which are measured at fair value on a recurring basis as of June 30, 2015:
In thousands
Level 1
 
Level 2
 
Level 3
 
June 30, 2015
Assets
 
 
 
 
 
 
 
Providência Contracts
$
—

 
$
1,848

 
$
—

 
$
1,848

 
 
 
 
 
 
 
 
Liabilities
 
 
 
 
 
 
 
Providência Instruments
$
—

 
$
(640
)
 
$
—

 
$
(640
)