Condensed Financial Statements of Parent Company, Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets [Abstract]
Cash and cash equivalents	$ 715,460	$ 383,837
Other assets	84,796	63,651
TOTAL ASSETS	5,177,720	4,550,453
Liabilities and shareholders' equity [Abstract]
Subordinated debentures	10,310	10,310
Other liabilities	64,122	56,211
Shareholders' equity	463,136	423,665	$ 369,296	$ 311,215
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	5,177,720	4,550,453
Parent Company [Member]
Assets [Abstract]
Cash and cash equivalents	1,535	4,551
Investment in subsidiaries	472,573	429,347
Other assets	241	956
TOTAL ASSETS	474,349	434,854
Liabilities and shareholders' equity [Abstract]
Subordinated debentures	10,310	10,310
Other liabilities	903	879
Shareholders' equity	463,136	423,665
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 474,349	$ 434,854