XML 80 R84.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Financial instruments (Details) (USD $) | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Recurring |  |
Cash equivalents | $ 0 | $ 16,177,462
Restricted cash | 0 | 7,500,000
Marketable securities | 8,570,338 | 8,496,372
Total Recurring | 8,570,338 | 32,173,834
Nonrecurring |  |
Investment in affiliate | 6,925,346 | 6,634,598
Fair Value, Inputs, Level 1 [Member] |  |
Recurring |  |
Cash equivalents | 0 | 16,177,462
Restricted cash | 0 | 7,500,000
Marketable securities | 8,570,338 | 8,496,372
Total Recurring | 8,570,338 | 32,173,834
Nonrecurring |  |
Investment in affiliate | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Recurring |  |
Cash equivalents | 0 | 0
Restricted cash | 0 | 0
Marketable securities | 0 | 0
Total Recurring | 0 | 0
Nonrecurring |  |
Investment in affiliate | 0 | 0
Fair Value, Inputs, Level 3 [Member] |  |
Recurring |  |
Cash equivalents | 0 | 0
Restricted cash | 0 | 0
Marketable securities | 0 | 0
Total Recurring | 0 | 0
Nonrecurring |  |
Investment in affiliate | $ 6,925,346 | $ 6,634,598

X
- Definition Represents the fair value of cash equivalents. + References No definition available. + Details
Name: | cwco_CashEquivalentsFairValueDisclosure
Namespace Prefix: | cwco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | cwco_FairValueAssetMeasuredOnNonRecurringBasisAbstract
Namespace Prefix: | cwco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | cwco_FairValueAssetMeasuredOnRecurringBasisAbstract
Namespace Prefix: | cwco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the fair value of restricted cash. + References No definition available. + Details
Name: | cwco_RestrictedCashFairValueDisclosure
Namespace Prefix: | cwco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total investments in (A) an entity in which the company has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method. Investments in an entity that is affiliated with the reporting entity by means of direct or indirect ownership, (C) an entity in which the reporting entity shares control of the entity with another party or group, and (D) an entity in which the company has significant influence, but does not have control. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Trading Securities which consist of all investments in certain debt and equity securities that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7534914&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
Name: | us-gaap_TradingSecuritiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant