Condensed Parent Company Information - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets
Premises and equipment	$ 136,092	$ 120,502
Other assets	86,660	52,179
Total assets	10,508,901	7,289,751
Liabilities and shareholders' equity
Other liabilities	64,512	42,133
Total liabilities	9,278,326	6,396,330
Shareholders’ equity	1,230,575	893,421	$ 852,401	$ 764,230
Total liabilities and shareholders’ equity	10,508,901	7,289,751
Parent Company
Assets
Cash on deposit with bank subsidiary	18,625	15,284
Investment in wholly-owned subsidiaries, at equity	1,279,285	938,294
Premises and equipment	7	7
Other assets	5,056	(164)
Total assets	1,302,973	953,421
Liabilities and shareholders' equity
Trust preferred securities	65,412	54,200
Other liabilities	6,986	5,800
Total liabilities	72,398	60,000
Shareholders’ equity	1,230,575	893,421
Total liabilities and shareholders’ equity	$ 1,302,973	$ 953,421