Deposits - Summarized Deposits (Parenthetical) (Details) - USD ($)		Dec. 31, 2021	Dec. 31, 2020
Time Deposits [Line Items]
Individual brokered certification of deposit		$ 29,000,000.0	$ 27,000,000.0
Listing service deposits	[1]	66,411,000	39,476,000
Brokered certificates of deposit	[1]	79,320,000	$ 52,678,000
Minimum
Time Deposits [Line Items]
Listing service deposits		250,000
Maximum
Time Deposits [Line Items]
Brokered certificates of deposit		$ 250,000

[1] As of December 31, 2021 and 2020, there were $29.0 million and $27.0 million, respectively, in individual listing service deposits amounting to $250,000 or more. All brokered certificates of deposit individually amounted to less than $250,000.