DOCUMENT AND ENTITY INFORMATION	9 Months Ended
	Sep. 30, 2012	Nov. 14, 2012 Common Class A [Member]	Nov. 14, 2012 Common Class B [Member]
Entity Registrant Name	PRESIDENTIAL REALTY CORP/DE/
Entity Central Index Key	0000731245
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	pdnla
Entity Common Stock, Shares Outstanding		442,533	3,217,147
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2012
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2012