Investment Securities (Tables)

3 Months Ended

Mar. 31, 2020

Investment Securities [Abstract]

Schedule Of Investment Securities Classified As Available-for-sale And Held-to-maturity

Available-for-sale	March 31, 2020
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
U.S. Government agency securities	$               49,075	$                1,444	$                 (132)	$              50,387
Asset-backed securities *	243,041	-	(13,789)	229,252
Tax-exempt obligations of states and political subdivisions	5,175	163	-	5,338
Taxable obligations of states and political subdivisions	56,128	2,955	(4)	59,079
Residential mortgage-backed securities	318,963	9,261	(1,902)	326,322
Collateralized mortgage obligation securities	204,774	6,351	(972)	210,153
Commercial mortgage-backed securities	380,571	13,415	(1,991)	391,995
Corporate debt securities	85,140	460	(4,848)	80,752
	$          1,342,867	$              34,049	$            (23,638)	$         1,353,278

	March 31, 2020
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
* Asset-backed securities as shown above	cost	gains	losses	value
Federally insured student loan securities	$               32,109	$                      -	$             (1,045)	$              31,064
Collateralized loan obligation securities	210,932	-	(12,744)	198,188
	$             243,041	$                      -	$           (13,789)	$            229,252

Available-for-sale	December 31, 2019
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
U.S. Government agency securities	$               52,415	$                  672	$                (177)	$              52,910
Asset-backed securities *	244,751	132	(534)	244,349
Tax-exempt obligations of states and political subdivisions	5,174	144	-	5,318
Taxable obligations of states and political subdivisions	58,258	1,992	-	60,250
Residential mortgage-backed securities	335,068	2,629	(1,101)	336,596
Collateralized mortgage obligation securities	221,109	1,826	(208)	222,727
Commercial mortgage-backed securities	394,852	3,836	(146)	398,542
	$          1,311,627	$             11,231	$             (2,166)	$         1,320,692

	December 31, 2019
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
* Asset-backed securities as shown above	cost	gains	losses	value
Federally insured student loan securities	$               33,852	$                    10	$                (323)	$              33,539
Collateralized loan obligation securities	210,899	122	(211)	210,810
	$             244,751	$                  132	$                (534)	$            244,349

Held-to-maturity	December 31, 2019
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
Other debt securities - single issuers	$                 9,219	$                      -	$             (2,067)	$                7,152
Other debt securities - pooled	75,168	682	-	75,850
	$               84,387	$                  682	$             (2,067)	$              83,002

Amortized Cost And Fair Value Of Investment Securities By Contractual Maturity

	Available-for-sale		Held-to-maturity
	Amortized	Fair	Amortized	Fair
	cost	value	cost	value
Due before one year	$                 6,829	$                6,818	$                       -	$                      -
Due after one year through five years	100,793	104,670	-	-
Due after five years through ten years	234,846	242,311	-	-
Due after ten years	1,000,399	999,479	-	-
	$          1,342,867	$         1,353,278	$                       -	$                      -

Available-for-sale And Held-to-maturity Securities, Continuous Unrealized Loss Position

Available-for-sale		Less than 12 months		12 months or longer		Total
	Number of securities	Fair Value	Unrealized losses	Fair Value	Unrealized losses	Fair Value	Unrealized losses
Description of Securities
U.S. Government agency securities	3	$                2,678	$                     (8)	$                3,852	$                 (124)	$                  6,530	$                (132)
Asset-backed securities	40	206,017	(12,465)	23,235	(1,324)	229,252	(13,789)
Taxable obligations of states and
political subdivisions	1	2,498	(4)	-	-	2,498	(4)
Residential mortgage-backed securities	38	52,631	(1,240)	25,719	(662)	78,350	(1,902)
Collateralized mortgage obligation securities	6	21,012	(662)	12,566	(310)	33,578	(972)
Commercial mortgage-backed securities	8	125,985	(1,983)	1,101	(8)	127,086	(1,991)
Corporate debt securities	1	-	-	5,152	(4,848)	5,152	(4,848)
Total temporarily impaired
investment securities	97	$            410,821	$            (16,362)	$              71,625	$              (7,276)	$              482,446	$           (23,638)

The table below indicates the length of time individual securities had been in a continuous unrealized loss position at December 31, 2019 (dollars in thousands):

Available-for-sale		Less than 12 months		12 months or longer		Total
	Number of securities	Fair Value	Unrealized losses	Fair Value	Unrealized losses	Fair Value	Unrealized losses
Description of Securities
U.S. Government agency securities	5	$              12,214	$                   (44)	$                3,986	$                 (133)	$                 16,200	$                (177)
Asset-backed securities	28	115,909	(275)	56,427	(260)	172,336	(535)
Residential mortgage-backed securities	64	58,682	(114)	73,311	(987)	131,993	(1,101)
Collateralized mortgage obligation securities	22	37,387	(85)	18,136	(123)	55,523	(208)
Commercial mortgage-backed securities	4	35,095	(129)	3,162	(16)	38,257	(145)
Total temporarily impaired
investment securities	123	$            259,287	$                 (647)	$            155,022	$              (1,519)	$               414,309	$             (2,166)

Held-to-maturity		Less than 12 months		12 months or longer		Total
	Number of securities	Fair Value	Unrealized losses	Fair Value	Unrealized losses	Fair Value	Unrealized losses
Description of Securities
Corporate and other debt securities:
Single issuers	1	$                      -	$                      -	$                7,152	$             (2,067)	$                  7,152	$             (2,067)
Total temporarily impaired
investment securities	1	$                      -	$                      -	$                7,152	$             (2,067)	$                  7,152	$             (2,067)