Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jan. 01, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans		$ 78,789	$ 52,388	$ 21,398	$ 21,039
Loans		6,081,715	4,731,315	$ 4,453,466
Retained earnings		$ (532,874)	(478,489)
Threshold period past due for nonaccrual status		90 days
Unfunded Loan Commitment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans		$ 13,506	$ 582
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses on loans	$ 14,600
Retained earnings	17,100
Addition to PCD allowance for credit losses	100
Accounting Standards Update 2016-13 | Unfunded Loan Commitment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans	$ 7,500