Parent Company Financial Statements (Statements of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 48,176	$ 71,681	$ 76,870
Adjustments to reconcile net income to net cash provided by operating activities:
Tax (expense) benefit from stock option exercises and other equity awards	(34)	78	182
Deferred income tax (benefit) expense	(3,690)	1,160	2,155
(Increase) decrease in other assets	(3,000)	(30,804)	38,935
Net cash provided by (used in) operating activities	31,603	113,006	100,812
Cash flows from investing activities:
Purchases of other equity investments, net	(263)	(375)	(650)
Net cash provided by (used in) investing activities	(550,840)	(999,041)	(240,899)
Cash flows from financing activities:
Treasury stock purchased	(8,814)	(9,479)	0
Net proceeds from stock option exercises and issuance of other equity awards, net of awards surrendered	(754)	(821)	(177)
Cash dividends paid	(38,631)	(37,647)	(36,349)
Net cash provided by (used in) financing activities	490,999	825,964	116,312
Net increase (decrease) in cash and cash equivalents	(28,238)	(60,071)	(23,775)
Cash and cash equivalents at beginning of year	118,422	178,493	202,268
Cash and cash equivalents at end of year	90,184	118,422	178,493
Parent Company [Member]
Cash flows from operating activities:
Net income	48,176	71,681	76,870
Adjustments to reconcile net income to net cash provided by operating activities:
Tax (expense) benefit from stock option exercises and other equity awards	(34)	78	182
Deferred income tax (benefit) expense	(56)	5	(24)
(Increase) decrease in dividend receivable	653	2,386	(1,128)
(Increase) decrease in other assets	8	(175)	50
Increase (decrease) in accrued expenses and other liabilities	113	93	31
Other, net	36	(97)	(182)
Net cash provided by (used in) operating activities	37,606	54,493	43,808
Cash flows from investing activities:
Repayment of equity investment in subsidiary	0	1,096	0
Purchases of other equity investments, net	(263)	(375)	(650)
Net cash provided by (used in) investing activities	(263)	721	(650)
Cash flows from financing activities:
Treasury stock purchased	(8,814)	(9,479)	0
Net proceeds from stock option exercises and issuance of other equity awards, net of awards surrendered	(754)	(821)	(177)
Cash dividends paid	(38,631)	(37,647)	(36,349)
Net cash provided by (used in) financing activities	(48,199)	(47,947)	(36,526)
Net increase (decrease) in cash and cash equivalents	(10,856)	7,267	6,632
Cash and cash equivalents at beginning of year	15,557	8,290	1,658
Cash and cash equivalents at end of year	4,701	15,557	8,290
Bank [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings (losses) of subsidiaries	(11,290)	(19,565)	(32,045)
Non-bank [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings (losses) of subsidiaries	$ 0	$ 87	$ 54