Long-Term Debt and FHLB Stock (Narrative) (Details) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) subsidiary $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2005 USD ($) $ / shares shares
Long-Term Debt And Federal Home Loan Bank [Line Items]
Number Of Wholly Owned Subsidiaries | subsidiary	1
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Zions Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	$ 10,000	$ 10,000
Line of credit facility, maximum amount outstanding during period	0	0
Pacific Community Bankers Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	50,000	50,000
Line of credit facility, maximum amount outstanding during period	$ 0	$ 0
Subordinated Debt.
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest rate, variable rate basis	three month LIBOR
Interest rate	2.48%	2.16%
Subordinated debt securities	$ 5,155
Stated maturity date	May 23, 2035
Subordinated Debt. | LIBOR
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest LIBOR rate	2.00%
Subordinated Debt. | RSB Capital Trust I
Long-Term Debt And Federal Home Loan Bank [Line Items]
Trust term	30 years
Subordinated Debt. | Private placement | RSB Capital Trust I
Long-Term Debt And Federal Home Loan Bank [Line Items]
Number of preferred securities issued			$ 5,000
Common stock issued | shares			155
Common stock, par value (in dollars per share) | $ / shares			$ 1
Federal Home Loan Bank of New York ("FHLBNY")
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	$ 640,629	$ 640,500
Amount of pledged assets	175,355	170,385
Impairment Related To Federal Home Loan Stock	$ 0	$ 0