Income Taxes Income Taxes (Details - Textuals) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Tax carryforward amount	$ 263,200,000us-gaap_OperatingLossCarryforwards
Income tax, uncertain tax positions	0cwei_IncomeTaxUncertainTaxPositions	0cwei_IncomeTaxUncertainTaxPositions
Stock Option Exercise Tax Benefit
Operating Loss Carryforwards [Line Items]
Tax carryforward amount	$ 22,000,000

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant