2.4.0.8109 - Disclosure - Significant Accounting Policiestruefalsefalse1false falsefalseeol_PE769749--1310-Q0007_STD_181_20130630_0http://www.sec.gov/CIK0001425565duration2013-01-01T00:00:002013-06-30T00:00:001false 4us-gaap_SignificantAccountingPoliciesTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div> 2. Significant Accounting Policies  The Company made no changes to its significant accounting policies during the three and six months ended June 30, 2013. Use of Estimates and Reclassifications The preparation of the condensed consolidated financial statements requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. The Company regularly makes significant estimates and assumptions including, but not limited to, the collectibility of accounts receivable, the valuation of inventories, the estimated total costs for long-term contracts used as a basis of determining percentage of completion for such contracts, the useful lives of equipment, the determination of accrued liabilities, the valuation of stock-based compensation, and the determination of valuation allowances associated with deferred tax assets. The Company bases its estimates on historical experience and on various other assumptions believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ materially from those estimates. Warrant Accounting The Company accounts for common stock warrants and put options in accordance with applicable accounting guidance provided in ASC 480, Liabilities – Distinguishing Liabilities from Equity, as either derivative liabilities or as equity instruments depending on the specific terms of the warrant agreement. The common stock warrants are accounted for as a liability due to a provision for the warrant holder to request redemption upon a change of control. We classify these derivative liabilities on the condensed consolidated balance sheets as a long term liability, which is revalued at each balance sheet date subsequent to the initial issuance. We use a modified binomial pricing model to value these derivative liabilities. The modified binomial pricing model, which is based, in part, upon unobservable inputs for which there is little or no market data, requires the Company to develop its own assumptions. The Company used the following assumptions for its common stock warrants. The risk-free interest rate for June 3, 2013 (issuance date) and June 30, 2013 were 1.03% and 1.03%, respectively. The volatility of the market price of the Company’s common stock for June 3, 2013 (issuance date) and June 30, 2013 were 102.93% and 102.93%, respectively. The expected average term of the warrant used for both periods was 5 years. There was no expected dividend yield for the warrants granted. In building the modified binomial model, the Company assumed a 15% probability of a change in control and used 20 nodes (See Note 3. Fair Value Measurements). As a result, if factors change and different assumptions are used, the warrant liability and the change in estimated fair value could be materially different. Changes in the fair value of the warrants are reflected in the condensed consolidated statement of operations as change in fair value of warrant liability, with an offsetting non-cash entry recorded as interest expense or benefit. </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for all significant accounting policies of the reporting entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18861-107790 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18743-107790 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18854-107790 false0Significant Accounting PoliciesfalseSignificant Accounting PoliciesUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://realgoodssolar.com/taxonomy/role/NotesToFinancialStatementsSignificantAccountingPoliciesTextBlock11