Parent Company Financial Statements (Statements of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ (28,059)		$ 48,176	$ 71,681
Adjustments to reconcile net income to net cash provided by operating activities:
Tax (expense) benefit from stock option exercises and other equity awards	(183)		(34)	78
Deferred income tax (benefit) expense	(16,737)	[1]	(3,690)	1,160
(Increase) decrease in other assets	(11,141)		(3,000)	(30,804)
Net cash provided by (used in) operating activities	57,668		31,603	113,006
Cash flows from investing activities:
Equity investment in subsidiary bank	(70,500)		0	0
Purchases of other equity investments, net	(338)		(263)	(375)
Net cash provided by (used in) investing activities	231,304		(550,840)	(999,041)
Cash flows from financing activities:
Treasury stock purchased	0		(8,814)	(9,479)
Net proceeds from issuance of common stock in public offering	70,521		0	0
Net proceeds from stock option exercises and issuance of other equity awards, net of awards surrendered	(31)		(754)	(821)
Cash dividends paid	(38,397)		(38,631)	(37,647)
Net cash provided by (used in) financing activities	(265,267)		490,999	825,964
Net increase (decrease) in cash and cash equivalents	23,705		(28,238)	(60,071)
Cash and cash equivalents at beginning of year	90,184		118,422	178,493
Cash and cash equivalents at end of year	113,889		90,184	118,422
Parent Company [Member]
Cash flows from operating activities:
Net income (loss)	(28,059)		48,176	71,681
Adjustments to reconcile net income to net cash provided by operating activities:
Tax (expense) benefit from stock option exercises and other equity awards	(183)		(34)	78
Deferred income tax (benefit) expense	(7)		(56)	5
(Increase) decrease in dividend receivable	(275)		653	2,386
(Increase) decrease in other assets	77		8	(175)
Increase (decrease) in accrued expenses and other liabilities	266		113	93
Other, net	184		36	(97)
Net cash provided by (used in) operating activities	39,143		37,606	54,493
Cash flows from investing activities:
Repayment of equity investment in subsidiary	0		0	1,096
Purchases of other equity investments, net	(338)		(263)	(375)
Net cash provided by (used in) investing activities	(70,838)		(263)	721
Cash flows from financing activities:
Treasury stock purchased	0		(8,814)	(9,479)
Net proceeds from issuance of common stock in public offering	70,521		0	0
Net proceeds from stock option exercises and issuance of other equity awards, net of awards surrendered	(31)		(754)	(821)
Cash dividends paid	(38,397)		(38,631)	(37,647)
Net cash provided by (used in) financing activities	32,093		(48,199)	(47,947)
Net increase (decrease) in cash and cash equivalents	398		(10,856)	7,267
Cash and cash equivalents at beginning of year	4,701		15,557	8,290
Cash and cash equivalents at end of year	5,099		4,701	15,557
Bank [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings (losses) of subsidiaries	67,139		(11,290)	(19,565)
Non-bank [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings (losses) of subsidiaries	$ 1		$ 0	$ 87

[1] The deferred income tax benefit recognized in 2024 was largely associated with loans that were reclassified to held for sale and written down to fair value in December 2024.