Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Schedule of Warrant Liability Valuation) (Details)

v2.4.1.9
Summary of Significant Accounting Policies (Schedule of Warrant Liability Valuation) (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value of warrants $ 73,499us-gaap_DerivativeLiabilitiesCurrent $ 93,789us-gaap_DerivativeLiabilitiesCurrent
Warrant Liability [Member]    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Strike price $ 10.00us-gaap_FairValueAssumptionsExercisePrice
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
$ 10.00us-gaap_FairValueAssumptionsExercisePrice
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Market price $ 4.85ipdn_FairValueAssumptionsMarketPrice
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
$ 4.87ipdn_FairValueAssumptionsMarketPrice
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Expected life 3 years 11 months 5 days 4 years 2 months 1 day
Risk-free interest rate 1.62%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
1.62%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Dividend yield 0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
0.00%us-gaap_FairValueAssumptionsExpectedDividendRate
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Volatility 39.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
42.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Warrants outstanding 131,250us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
131,250us-gaap_ClassOfWarrantOrRightOutstanding
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
Fair value of warrants $ 73,499us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember
$ 93,789us-gaap_DerivativeLiabilitiesCurrent
/ us-gaap_FairValueByLiabilityClassAxis
= us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember