Regulatory Capital Requirements (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) item	Mar. 31, 2016 USD ($)
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	26
Capital actual amount under regulations [Abstract]
Total capital (to risk-weighted assets)	$ 86,088
Tier I capital (to risk-weighted assets)	70,816
Tier I capital (to average assets, leverage)	70,816
Common equity Tier 1 (to risk-weighted assets)	$ 52,431
Actual Ratio Under RAP [Abstract]
Total capital (to risk-weighted assets) (as a percent)	13.341%
Tier I capital (to risk-weighted assets) (in hundredths)	10.974%
Tier I capital (to average assets, leverage) (as a percent)	8.529%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	8.125%
For capital adequacy purposes, amount [Abstract]
Total capital (to risk-weighted assets)	$ 59,689
Tier I capital (to risk-weighted assets)	46,783
Tier I capital (to average assets, leverage)	33,211
Common equity Tier 1 (to risk-weighted assets)	$ 37,104
For capital adequacy purposes, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	9.25%
Tier I capital (to risk-weighted assets) (in hundredths)	7.25%
Tier I capital (to average assets, leverage) (in hundredths)	4.00%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	5.75%
To be well capitalized under prompt corrective action provision, amount [Abstract]
Total capital (to risk-weighted assets)	$ 64,529
Tier I capital (to risk-weighted assets)	$ 38,717
To be well capitalized under prompt corrective action provision, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	6.00%
To be well capitalized under the Federal Reserve's regulations, amount
Total capital (to risk-weighted assets)	$ 64,529
Tier I capital (to risk-weighted assets)	$ 38,717
To be well capitalized under the Federal Reserve's regulations, ratio
Total capital (to risk-weighted assets) (in hundredths)	10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	6.00%
Adjustments to net loss as well as the capital ratios [Abstract]
RAP net income	$ 514
Tax lien adjustment, net of noncontrolling interest	1,298
Net income	$ 1,812	$ 2,189
Actual Ratio Under US GAAP [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	13.341%
Tier I capital (to risk-weighted assets) (in hundredths)	10.974%
Tier I capital (to average assets, leverage) (in hundredths)	8.529%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	8.125%
Ratios As Adjusted Under RAP [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	13.162%
Tier I capital (to risk-weighted assets) (in hundredths)	10.727%
Tier I capital (to average assets, leverage) (in hundredths)	8.333%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	7.938%
Royal Bank
Capital actual amount under regulations [Abstract]
Total capital (to risk-weighted assets)	$ 79,130
Tier I capital (to risk-weighted assets)	70,998
Tier I capital (to average assets, leverage)	70,998
Common equity Tier 1 (to risk-weighted assets)	$ 70,437
Actual Ratio Under RAP [Abstract]
Total capital (to risk-weighted assets) (as a percent)	12.32%
Tier I capital (to risk-weighted assets) (in hundredths)	11.054%
Tier I capital (to average assets, leverage) (as a percent)	8.619%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	10.967%
For capital adequacy purposes, amount [Abstract]
Total capital (to risk-weighted assets)	$ 59,411
Tier I capital (to risk-weighted assets)	46,566
Tier I capital (to average assets, leverage)	32,950
Common equity Tier 1 (to risk-weighted assets)	$ 36,931
For capital adequacy purposes, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	9.25%
Tier I capital (to risk-weighted assets) (in hundredths)	7.25%
Tier I capital (to average assets, leverage) (in hundredths)	4.00%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	5.75%
To be well capitalized under prompt corrective action provision, amount [Abstract]
Total capital (to risk-weighted assets)	$ 64,228
Tier I capital (to risk-weighted assets)	51,383
Tier I capital (to average assets, leverage)	41,188
Common equity Tier 1 (to risk-weighted assets)	$ 41,748
To be well capitalized under prompt corrective action provision, ratio [Abstract]
Total capital (to risk-weighted assets) (in hundredths)	10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	8.00%
Tier I capital (to average assets, leverage) (in hundredths)	5.00%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	6.50%
To be well capitalized under the Federal Reserve's regulations, amount
Total capital (to risk-weighted assets)	$ 64,228
Tier I capital (to risk-weighted assets)	$ 51,383
To be well capitalized under the Federal Reserve's regulations, ratio
Total capital (to risk-weighted assets) (in hundredths)	10.00%
Tier I capital (to risk-weighted assets) (in hundredths)	8.00%
Adjustments to net loss as well as the capital ratios [Abstract]
RAP net income	$ 757
Tax lien adjustment, net of noncontrolling interest	1,298
Net income	$ 2,055
As adjusted for RAP
Total capital (to risk-weighted assets) (in hundredths)	12.502%
Tier 1 capital (to risk-weighted assets) (in hundredths)	11.236%
Tier 1 capital (to average assets, leverage) (in hundredths)	8.765%
Common equity Tier 1 (to risk-weighted assets) (in hundredths)	11.148%