XML 16 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Subsequent Events (Details) | May 10, 2013 acre | Apr. 30, 2013 acre | Mar. 31, 2013 acre
--- | --- | --- | ---
Subsequent Event [Line Items] |  |  |
Acreage of Unpatented Mining Claims | 93,357 | 24,800 | 15,360

X
- Definition Acreage of Unpatented Mining Claims + References No definition available. + Details
Name: | ctgo_AcreageOfUnpatentedMiningClaims
Namespace Prefix: | ctgo_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration