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Stock-Based Compensation (Schedule of Warrant Activity) (Details) (Warrants [Member], USD $)
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12 Months Ended | |
|---|---|---|
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Dec. 31, 2014
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Dec. 31, 2013
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Warrants [Member]
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| Number of Warrants | ||
| Outstanding - December 31, 2013 |
131,250us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
|
| Granted |
231,250us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
|
| Exercised | ||
| Forfeited or Canceled | ||
| Outstanding - December 31, 2014 |
362,500us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
131,250us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Exercisable - December 31, 2014 |
131,250ipdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercisableNumber / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
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| Weighted Average Exercise Price | ||
| Outstanding - December 31, 2013 |
$ 10.00ipdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
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| Granted |
$ 7.41ipdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantedInPeriodWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
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| Exercised | ||
| Forfeited or Canceled | ||
| Outstanding - December 31, 2014 |
$ 8.34ipdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
$ 10.00ipdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
| Exercisable - December 31, 2014 |
$ 10.00ipdn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableWeightedAverageExercisePrice / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
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| Weighted Average Remaining Contractual Life (in Years) | ||
| Outstanding | 4 years 6 months | 5 years 2 months 12 days |
| Exercisable - December 31, 2014 | 4 years 2 months 12 days | |
| Aggregate Intrinsic Value | ||
| Outstanding - December 31, 2013 | ||
| Outstanding - December 31, 2014 |
87,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |
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| Exercisable - December 31, 2014 | ||
| X | ||||||||||
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- Definition
Intrinsic value of exercisable equity-based compensation awards. Excludes stock and unit options. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable Weighted Average Exercise Price. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercisable Weighted Average Remaining Contractual Terms. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Exercises In Period Weighted Average Exercise Price. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited Or Canceled In Period Weighted Average Exercise Price. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted In Period Weighted Average Exercise Price. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Weighted Average Exercise Price. No definition available.
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| X | ||||||||||
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- Definition
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Exercisable Number. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Intrinsic value of equity-based compensation awards outstanding. Excludes stock and unit options. No definition available.
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| X | ||||||||||
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- Definition
Weighted average remaining contractual term for equity-based awards excluding options, 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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| X | ||||||||||
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- Definition
Number of non-option equity instruments exercised by participants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of shares under non-option equity instrument agreements that were either cancelled or expired. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net number of non-option equity instruments granted to participants. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of equity instruments other than options outstanding, including both vested and non-vested instruments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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