Description of Business and Summary of Significant Accounting Policies - Summary of Accounting Standards Update (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jan. 01, 2023	Dec. 31, 2022
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
CCBX credit enhancement asset	$ 91,867		$ 53,377
Deferred tax asset, net	4,404		18,458
Retained earnings	$ 156,299		119,998
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses		$ 77,881
CCBX credit enhancement asset		57,842
Deferred tax asset, net		18,238
Unfunded commitment reserve		634
Retained earnings		120,732
Accounting Standards Update 2016-13 | Pre-ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses			74,029
CCBX credit enhancement asset			53,377
Deferred tax asset, net			18,458
Unfunded commitment reserve			974
Retained earnings			$ 119,998
Accounting Standards Update 2016-13 | Impact of ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses		3,852
CCBX credit enhancement asset		4,465
Deferred tax asset, net		(220)
Unfunded commitment reserve		(340)
Retained earnings		$ 734