Prepaid Expense, Noncurrent [Abstract]

NamePrepaidExpenseNoncurrentAbstract
Namespacehttp://fasb.org/us-gaap/2020-01-31
Prefixus-gaap
Data typexbrli:stringItemType
Period typeduration
Substitution Groupxbrli:item
BalanceNone
NillableTrue
AbstractTrue

Labels

TextLangRoleContainer role
Prepaid Expense, Noncurrent [Abstract]en-UShttp://www.xbrl.org/2003/role/labelhttp://www.xbrl.org/2003/role/link

Related Child Concepts

NameRelation TypeRole
us-gaap:PrepaidExpenseOtherNoncurrent
parent-childhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified
us-gaap:PrepaidMineralRoyaltiesNoncurrent
parent-childhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified
us-gaap:PrepaidExpenseNoncurrent
parent-childhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified
us-gaap:PrepaidExpenseOtherNoncurrent
domain-memberhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedStatementTable
us-gaap:PrepaidMineralRoyaltiesNoncurrent
domain-memberhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedStatementTable
us-gaap:PrepaidExpenseNoncurrent
domain-memberhttp://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedStatementTable
us-gaap:PrepaidExpenseOtherNoncurrent
parent-childhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssets
us-gaap:PrepaidMineralRoyaltiesNoncurrent
parent-childhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssets
us-gaap:PrepaidExpenseNoncurrent
parent-childhttp://fasb.org/us-gaap/role/disclosure/DeferredCostsCapitalizedPrepaidAndOtherAssets