Investment Securities (Schedule of Unrealized Loss on Investments, AFS) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value
Less than 12 months, fair value	$ 63,970	$ 289,705
More than 12 months, fair value	387,399	52,305
Fair value	451,369	342,010
Unrealized Losses
Less than 12 months, unrealized loss	4,267	5,136
More than 12 months, unrealized loss	54,085	893
Unrealized loss	58,352	6,029
Asset-backed securities issued by GSEs and U.S. Agencies
Fair Value
Less than 12 months, fair value	24,688	205,891
More than 12 months, fair value	259,127	41,327
Fair value	283,815	247,218
Unrealized Losses
Less than 12 months, unrealized loss	1,493	3,997
More than 12 months, unrealized loss	30,512	776
Unrealized loss	32,005	4,773
Residential CMOs
Fair Value
Less than 12 months, fair value	7,469	0
More than 12 months, fair value	138	57
Fair value	7,607	57
Unrealized Losses
Less than 12 months, unrealized loss	381	0
More than 12 months, unrealized loss	19	4
Unrealized loss	400	4
Student loan trust ABSs
Fair Value
Less than 12 months, fair value	1,950	21,640
More than 12 months, fair value	42,170	2,226
Fair value	44,120	23,866
Unrealized Losses
Less than 12 months, unrealized loss	1	281
More than 12 months, unrealized loss	2,292	5
Unrealized loss	2,293	286
Municipal bonds
Fair Value
Less than 12 months, fair value	6,695	47,314
More than 12 months, fair value	72,923	6,696
Fair value	79,618	54,010
Unrealized Losses
Less than 12 months, unrealized loss	796	776
More than 12 months, unrealized loss	19,352	108
Unrealized loss	20,148	884
Corporate bonds
Fair Value
Less than 12 months, fair value	4,404
More than 12 months, fair value	0
Fair value	4,404
Unrealized Losses
Less than 12 months, unrealized loss	459
More than 12 months, unrealized loss	0
Unrealized loss	459
U.S. government obligations
Fair Value
Less than 12 months, fair value	18,764	14,860
More than 12 months, fair value	13,041	1,999
Fair value	31,805	16,859
Unrealized Losses
Less than 12 months, unrealized loss	1,137	82
More than 12 months, unrealized loss	1,910	0
Unrealized loss	$ 3,047	$ 82

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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