Credit Quality (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Non performing loans, charge offs	$ 271,000	$ 837,000	$ 1,699,000	$ 3,079,000	$ 3,893,000
Royal Bank [Member]
Financing Receivable, Recorded Investment [Line Items]
Net classified loans and foreclosed property	37,700,000		37,700,000		61,400,000
Royal Bank [Member] | Nonperforming Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Delinquent loans held for investment	$ 445,000,000,000		$ 445,000,000,000		$ 2,600,000