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Equity Incentive Plan (Details Textual) (USD $)
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3 Months Ended | |
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Mar. 31, 2015
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Dec. 31, 2013
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options | $ 3,493,360us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions | |
| Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition | 3 years 1 month 6 days | |
| Employee Stock Option [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Stock Granted, Value, Share-based Compensation, Gross |
260,725us-gaap_StockGrantedDuringPeriodValueSharebasedCompensationGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
62,602us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
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| Allocated Share-based Compensation Expense |
39,779us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |
18,464us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember |
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| Employees [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
24,100us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = ipwr_EmployeesMember |
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| Director [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
38,502us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_TitleOfIndividualAxis = us-gaap_DirectorMember |
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| Equity Incentive 2013 Plan [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |
487,932us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / us-gaap_PlanNameAxis = ipwr_EquityIncentive2013PlanMember |
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| Share-based Compensation Arrangement By Share-based Payment Award Plan Modification Number Of Shares Authorised |
839,983ipwr_SharebasedCompensationArrangementBySharebasedPaymentAwardPlanModificationNumberOfSharesAuthorised / us-gaap_PlanNameAxis = ipwr_EquityIncentive2013PlanMember |
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| Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant |
135,677us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_PlanNameAxis = ipwr_EquityIncentive2013PlanMember |
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| Equity Incentive Plan [Member] | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
18,464us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_PlanNameAxis = ipwr_EquityIncentivePlanMember |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |
17,902us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_PlanNameAxis = ipwr_EquityIncentivePlanMember |
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| Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized |
1,250,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized / us-gaap_PlanNameAxis = ipwr_EquityIncentivePlanMember |
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period |
562us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod / us-gaap_PlanNameAxis = ipwr_EquityIncentivePlanMember |
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| Proceeds from Issuance of Common Stock |
$ 84,813us-gaap_ProceedsFromIssuanceOfCommonStock / us-gaap_PlanNameAxis = ipwr_EquityIncentivePlanMember |
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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan after modification. No definition available.
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Unrecognized cost of unvested options awarded to employees as compensation. No definition available.
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- Definition
The cash inflow from the additional capital contribution to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
Number of additional shares authorized for issuance under an established share-based compensation plan. No definition available.
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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Gross number of share options (or share units) granted during the period. No definition available.
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- Definition
Value, before forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP). No definition available.
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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