Parent Company Only Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Premises and equipment, net	$ 58,206	$ 59,491
Other assets	31,123	29,495
Total assets	4,726,348	3,839,426
Other liabilities	31,454	30,321
Total liabilities	4,158,120	3,312,817
Stockholders’ equity	568,228	526,609	$ 475,864	$ 307,964
Total liabilities and stockholders’ equity	4,726,348	3,839,426
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Cash	122,163	13,792
Premises and equipment, net	4,423	3,564
Investment in subsidiaries	553,150	525,418
Other assets	4,062	4,529
Total assets	683,798	547,303
Debt	113,280	18,858
Other liabilities	2,290	1,836
Total liabilities	115,570	20,694
Stockholders’ equity	568,228	526,609
Total liabilities and stockholders’ equity	$ 683,798	$ 547,303