Parent Corporation Only Financial Statements (Details) - Condensed Statements of Cash Flows - USD ($) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Aug. 19, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income		$ 33,038	$ 32,097	$ 32,219	$ 32,999	$ 25,641	$ 24,786	$ 14,832	$ 6,030	$ 130,353	$ 71,289	$ 73,395
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on equity securities, net										373	(202)	(294)
Amortization of subordinated debt issuance costs										303	323	329
Decrease (increase) in other assets										46,086	(22,498)	(22,619)
(Decrease) increase in other liabilities										10,526	(4,174)	(2,785)
Net cash provided by operating activities										202,273	81,125	60,688
Cash flows from investing activities:
Sales of available-for-sale securities											19,624	183,728
Purchase of equity securities										780	2,000
Sale of equity securities												569
Net cash used in investing activities										(689,860)	(323,365)	(102,467)
Cash flows from financing activities:
Cash dividends paid on preferred stock										1,717
Cash dividends paid on common stock										(17,493)	(14,317)	(12,160)
Purchase of treasury stock										(9,401)	(911)	(12,643)
Proceeds from preferred stock offering	$ 110,900									110,927
Proceeds from exercise of stock options										106	233	360
Net cash provided by financing activities										449,367	344,513	70,896
Cash and cash equivalents at beginning of period					303,756				201,483	303,756	201,483	172,366
Cash and cash equivalents at end of period		265,536				303,756				265,536	303,756	201,483
Parent Company [Member]
Cash flows from operating activities:
Net income										130,353	71,289	73,395
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings of subsidiary										(113,396)	(63,669)	(49,079)
Loss on equity securities, net										55		38
Amortization of subordinated debt issuance costs										303	323	329
Decrease (increase) in other assets										50,590	(50,001)
(Decrease) increase in other liabilities										(287)	(391)	(1,509)
Net cash provided by operating activities										67,618	(42,449)	23,174
Cash flows from investing activities:
Purchase of available-for-sale securities												(2)
Sales of available-for-sale securities												23
Purchase of equity securities										(780)
Sale of equity securities												569
Repayment of short-term borrowing											(3,000)
Capital infusion to subsidiary
Net cash used in investing activities										(780)	(3,000)	590
Cash flows from financing activities:
(Repayment of) proceeds from subordinated debt										(50,000)	73,440
Cash dividends paid on preferred stock										(1,717)
Cash dividends paid on common stock										(17,493)	(14,317)	(12,160)
Purchase of treasury stock										(9,401)	(911)	(12,643)
Proceeds from preferred stock offering										110,927
Proceeds from exercise of stock options										106	233	360
Net cash provided by financing activities										32,422	58,445	(24,443)
Increase (decrease) in cash and cash equivalents										99,260	12,996	(679)
Cash and cash equivalents at beginning of period					$ 34,388				$ 21,392	34,388	21,392	22,071
Cash and cash equivalents at end of period		$ 133,648				$ 34,388				$ 133,648	$ 34,388	$ 21,392