Regulatory Capital Requirements (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($) item	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) item	Jun. 30, 2016 USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Number of previous quarters for which the call report is filed in accordance with U.S.GAAP | item	27		27
Capital actual amount under regulations [Abstract]
Total capital (to risk-weighted assets)	$ 88,975		$ 88,975
Tier I capital (to risk-weighted assets)	75,024		75,024
Tier I capital (to average assets, leverage)	75,024		75,024
Common equity Tier 1 (to risk-weighted assets)	$ 55,492		$ 55,492
Actual Ratio Under RAP [Abstract]
Total capital (to risk-weighted assets) (as a percent)	14.267%		14.267%
Tier I capital (to risk-weighted assets) (in hundredths)	12.03%		12.03%
Tier I capital (to average assets, leverage) (as a percent)	9.13%		9.13%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	8.898%		8.898%
For capital adequacy purposes, amount [Abstract]
Total capital (to risk-weighted assets)	$ 57,689		$ 57,689
Tier I capital (to risk-weighted assets)	45,216		45,216
Tier I capital (to average assets, leverage)	32,871		32,871
Common equity Tier 1 (to risk-weighted assets)	$ 35,861		$ 35,861
For capital adequacy purposes, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	9.25%		9.25%
Tier I capital (to risk-weighted assets) (in hundredths)	7.25%		7.25%
Tier I capital (to average assets, leverage) (in hundredths)	4.00%		4.00%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	5.75%		5.75%
To be well capitalized under prompt corrective action provision, amount [Abstract]
Total capital (to risk-weighted assets)	$ 62,366		$ 62,366
Tier I capital (to risk-weighted assets)	$ 37,420		$ 37,420
To be well capitalized under prompt corrective action provision, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	10.00%		10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	6.00%		6.00%
To be well capitalized under the Federal Reserve's regulations, amount
Total capital (to risk-weighted assets)	$ 62,366		$ 62,366
Tier I capital (to risk-weighted assets)	$ 37,420		$ 37,420
To be well capitalized under the Federal Reserve's regulations, ratio
Total capital (to risk-weighted assets) (in hundredths)	10.00%		10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	6.00%		6.00%
Capital conservation buffer (as a percentage)			1.25
Adjustments to net loss as well as the capital ratios [Abstract]
RAP net income			$ 3,916
Tax lien adjustment, net of noncontrolling interest			903
Net income	$ 3,007	$ 2,034	$ 4,819	$ 4,223
Actual Ratio Under US GAAP [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	14.267%		14.267%
Tier I capital (to risk-weighted assets) (in hundredths)	12.03%		12.03%
Tier I capital (to average assets, leverage) (in hundredths)	9.13%		9.13%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	8.898%		8.898%
Ratios As Adjusted Under RAP [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	14.138%		14.138%
Tier I capital (to risk-weighted assets) (in hundredths)	11.851%		11.851%
Tier I capital (to average assets, leverage) (in hundredths)	8.991%		8.991%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	8.766%		8.766%
Royal Bank
Capital actual amount under regulations [Abstract]
Total capital (to risk-weighted assets)	$ 82,588		$ 82,588
Tier I capital (to risk-weighted assets)	74,721		74,721
Tier I capital (to average assets, leverage)	74,721		74,721
Common equity Tier 1 (to risk-weighted assets)	$ 74,081		$ 74,081
Actual Ratio Under RAP [Abstract]
Total capital (to risk-weighted assets) (as a percent)	13.296%		13.296%
Tier I capital (to risk-weighted assets) (in hundredths)	12.03%		12.03%
Tier I capital (to average assets, leverage) (as a percent)	9.148%		9.148%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	11.927%		11.927%
For capital adequacy purposes, amount [Abstract]
Total capital (to risk-weighted assets)	$ 57,454		$ 57,454
Tier I capital (to risk-weighted assets)	45,032		45,032
Tier I capital (to average assets, leverage)	32,671		32,671
Common equity Tier 1 (to risk-weighted assets)	$ 35,715		$ 35,715
For capital adequacy purposes, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	9.25%		9.25%
Tier I capital (to risk-weighted assets) (in hundredths)	7.25%		7.25%
Tier I capital (to average assets, leverage) (in hundredths)	4.00%		4.00%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	5.75%		5.75%
To be well capitalized under prompt corrective action provision, amount [Abstract]
Total capital (to risk-weighted assets)	$ 62,113		$ 62,113
Tier I capital (to risk-weighted assets)	49,690		49,690
Tier I capital (to average assets, leverage)	40,838		40,838
Common equity Tier 1 (to risk-weighted assets)	$ 40,373		$ 40,373
To be well capitalized under prompt corrective action provision, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	10.00%		10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	8.00%		8.00%
Tier I capital (to average assets, leverage) (in hundredths)	5.00%		5.00%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	6.50%		6.50%
To be well capitalized under the Federal Reserve's regulations, amount
Total capital (to risk-weighted assets)	$ 62,113		$ 62,113
Tier I capital (to risk-weighted assets)	$ 49,690		$ 49,690
To be well capitalized under the Federal Reserve's regulations, ratio
Total capital (to risk-weighted assets) (in hundredths)	10.00%		10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	8.00%		8.00%
Adjustments to net loss as well as the capital ratios [Abstract]
RAP net income			$ 4,338
Tax lien adjustment, net of noncontrolling interest			903
Net income			$ 5,241
As adjusted for RAP
Total capital (to risk-weighted assets) (in hundredths)	13.426%		13.426%
Tier 1 capital (to risk-weighted assets) (in hundredths)	12.16%		12.16%
Tier 1 capital (to average assets, leverage) (in hundredths)	9.251%		9.251%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	12.054%		12.054%