Restricted Cash (Details) - USD ($) $ in Thousands |
Jun. 30, 2017 |
Dec. 31, 2016 |
Jun. 30, 2016 |
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Restricted Cash | |||
Restricted cash | $ 7,557 | $ 7,557 | $ 7,557 |
Surety Bond [Member] | |||
Restricted Cash | |||
Reclamation bonding requirement | 27,500 | ||
Certificate of deposit [Member] | |||
Restricted Cash | |||
Restricted cash | 100 | 100 | |
Money Market Funds [Member] | |||
Restricted Cash | |||
Restricted cash | 7,457 | $ 7,457 | |
Money Market Funds [Member] | Surety Bond [Member] | |||
Restricted Cash | |||
Restricted cash pledged as collateral | $ 7,400 |
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- Definition Represents the amount of reclamation obligations, which are required to be covered by surety performance bonding, as of the balance sheet date. No definition available.
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- Definition The sum of the fair values, as of the date of each statement of financial position presented, of securities that are restricted as collateral for the payment of related debt obligations, primarily secured borrowings and repurchase agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Cash and equivalents whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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