Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Entity Information [Line Items]
Entity Registrant Name	ROYAL BANCSHARES OF PENNSYLVANIA INC
Entity Central Index Key	0000922487
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2017
Entity Current Reporting Status	Yes
Document Fiscal Period Focus	Q2
Entity Filer Category	Smaller Reporting Company
Class A - Common stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		28,006,047
Class B - Common stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		1,857,072