Investment Securities (Schedule Of Investment Securities Classified As Available-for-sale And Held-to-maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Available-for-sale [Abstract]
Total	$ 857,663	$ 945,212
Gross unrealized gains	339	14,081
Gross unrealized losses	(31,386)	(5,584)
Investment securities available-for-sale	826,616	953,709
U.S. Government Agency Securities [Member]
Available-for-sale [Abstract]
Total	29,598	36,182
Gross unrealized gains	32	1,167
Gross unrealized losses	(893)	(47)
Investment securities available-for-sale	28,737	37,302
Asset-backed Securities [Member]
Available-for-sale [Abstract]
Total	356,788	360,332
Gross unrealized gains		327
Gross unrealized losses	(10,889)	(241)
Investment securities available-for-sale	345,899	360,418
Federally insured student loan securities [Member]
Available-for-sale [Abstract]
Total	20,010	22,518
Gross unrealized gains		13
Gross unrealized losses	(169)	(73)
Investment securities available-for-sale	19,841	22,458
Collateralized Loan Obligations Securities [Member]
Available-for-sale [Abstract]
Total	336,778	337,814
Gross unrealized gains		314
Gross unrealized losses	(10,720)	(168)
Investment securities available-for-sale	326,058	337,960
Tax-exempt Obligations Of States And Political Subdivisions [Member]
Available-for-sale [Abstract]
Total	3,559	3,559
Gross unrealized gains	18	172
Gross unrealized losses	(16)
Investment securities available-for-sale	3,561	3,731
Taxable Obligations Of States And Political Subdivisions [Member]
Available-for-sale [Abstract]
Total	45,723	45,984
Gross unrealized gains	116	2,422
Gross unrealized losses	(526)
Investment securities available-for-sale	45,313	48,406
Residential Mortgage-backed Securities [Member]
Available-for-sale [Abstract]
Total	160,885	179,778
Gross unrealized gains	172	4,804
Gross unrealized losses	(5,693)	(281)
Investment securities available-for-sale	155,364	184,301
Collateralized Mortgage Obligation Securities [Member]
Available-for-sale [Abstract]
Total	49,793	60,778
Gross unrealized gains	1	1,083
Gross unrealized losses	(842)
Investment securities available-for-sale	48,952	61,861
Commercial Mortgage-backed Securities [Member]
Available-for-sale [Abstract]
Total	201,317	248,599
Gross unrealized gains		4,106
Gross unrealized losses	(8,448)	(1,629)
Investment securities available-for-sale	192,869	251,076
Corporate Debt Securities [Member]
Available-for-sale [Abstract]
Total	10,000	10,000
Gross unrealized losses	(4,079)	(3,386)
Investment securities available-for-sale	$ 5,921	$ 6,614

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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