Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Nov. 03, 2016
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
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	PDNLB
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		442,533
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		3,846,147