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Mineral Interests and Maintenance Fees (Details) (USD $)
3 Months Ended 9 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2014
Oct. 31, 2013
Sep. 02, 2014
acre
Mineral Interests and Maintenance Fees (Details) [Line Items]          
Land Subject to Ground Leases (in Acres)         10,000us-gaap_LandSubjectToGroundLeases
Impairment of Intangible Assets, Finite-lived $ 1,400,000us-gaap_ImpairmentOfIntangibleAssetsFinitelived    $ 1,400,000us-gaap_ImpairmentOfIntangibleAssetsFinitelived     
Exploration Costs, Period Cost 11,461us-gaap_ExplorationCosts 34,470us-gaap_ExplorationCosts 80,607us-gaap_ExplorationCosts 137,383us-gaap_ExplorationCosts  
Maintenance Fees [Member]          
Mineral Interests and Maintenance Fees (Details) [Line Items]          
Prepaid Expense, Current $ 0us-gaap_PrepaidExpenseCurrent
/ us-gaap_NatureOfExpenseAxis
= cyur_MaintenanceFeesMember
  $ 0us-gaap_PrepaidExpenseCurrent
/ us-gaap_NatureOfExpenseAxis
= cyur_MaintenanceFeesMember