Investment Securities (Tables)

6 Months Ended

Jun. 30, 2019

Investment Securities [Abstract]

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

Available-for-sale	June 30, 2019
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
U.S. Government agency securities	$               56,525	$                1,272	$                 (136)	$              57,661
Asset-backed securities *	262,792	295	(417)	262,670
Tax-exempt obligations of states and political subdivisions	6,173	127	(1)	6,299
Taxable obligations of states and political subdivisions	60,084	2,052	-	62,136
Residential mortgage-backed securities	367,108	2,719	(1,760)	368,067
Collateralized mortgage obligation securities	248,350	2,132	(302)	250,180
Commercial mortgage-backed securities	353,245	4,330	(2,809)	354,766
	$          1,354,277	$              12,927	$              (5,425)	$         1,361,779

	June 30, 2019
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
* Asset-backed securities as shown above	cost	gains	losses	value
Federally insured student loan securities	$               48,376	$                    85	$                (230)	$              48,231
Collateralized loan obligation securities	210,843	205	(187)	210,861
Other	3,573	5	-	3,578
	$             262,792	$                  295	$                (417)	$            262,670

Held-to-maturity	June 30, 2019
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
Other debt securities - single issuers	$                 9,193	$                      -	$             (1,857)	$                7,336
Other debt securities - pooled	75,221	805	-	76,026
	$               84,414	$                  805	$             (1,857)	$              83,362

Available-for-sale	December 31, 2018
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
U.S. Government agency securities	$               54,095	$                  146	$                (879)	$              53,362
Asset-backed securities *	189,850	104	(1,352)	188,602
Tax-exempt obligations of states and political subdivisions	7,546	50	(45)	7,551
Taxable obligations of states and political subdivisions	60,152	803	(520)	60,435
Residential mortgage-backed securities	377,199	648	(8,106)	369,741
Collateralized mortgage obligation securities	265,914	287	(3,994)	262,207
Commercial mortgage-backed securities	300,143	190	(5,907)	294,426
	$          1,254,899	$               2,228	$           (20,803)	$         1,236,324

	December 31, 2018
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
* Asset-backed securities as shown above	cost	gains	losses	value
Federally insured student loan securities	$               59,705	$                    87	$                (283)	$              59,509
Collateralized loan obligation securities	125,045	-	(1,069)	123,976
Other	5,100	17	-	5,117
	$             189,850	$                  104	$             (1,352)	$            188,602

Held-to-maturity	December 31, 2018
		Gross	Gross
	Amortized	unrealized	unrealized	Fair
	cost	gains	losses	value
Other debt securities - single issuers	$                 9,168	$                      -	$             (1,890)	$                7,278
Other debt securities - pooled	75,264	849	-	76,113
	$               84,432	$                  849	$             (1,890)	$              83,391

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	$                 1,135	$                1,135	$                       -	$                      -
Due after one year through five years	50,195	50,924	-	-
Due after five years through ten years	281,365	286,201	-	-
Due after ten years	1,021,582	1,023,519	84,414	83,362
	$          1,354,277	$         1,361,779	$              84,414	$            83,362

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	2	$                      -	$                      -	$                4,529	$                (136)	$                  4,529	$                (136)
Asset-backed securities	23	125,356	(248)	10,451	(169)	135,807	(417)
Tax-exempt obligations of states and
political subdivisions	1	-	-	1,135	(1)	1,135	(1)
Residential mortgage-backed securities	77	1,948	(1)	123,035	(1,759)	124,983	(1,760)
Collateralized mortgage obligation securities	25	26,660	(37)	46,455	(265)	73,115	(302)
Commercial mortgage-backed securities	10	119,360	(2,655)	43,758	(154)	163,118	(2,809)
Total temporarily impaired
investment securities	138	$           273,324	$             (2,941)	$            229,363	$             (2,484)	$              502,687	$             (5,425)

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	$                      -	$                      -	$                7,336	$             (1,857)	$                  7,336	$             (1,857)
Total temporarily impaired
investment securities	1	$                      -	$                      -	$                7,336	$             (1,857)	$                  7,336	$             (1,857)

The table below indicates the length of time individual securities had been in a continuous unrealized loss position at December 31, 2018 (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	10	$                  679	$                    (2)	$              41,719	$                (877)	$                 42,398	$                (879)
Asset-backed securities	26	148,753	(1,230)	11,506	(122)	160,259	(1,352)
Tax-exempt obligations of states and
political subdivisions	3	-	-	3,625	(45)	3,625	(45)
Taxable obligations of states and
political subdivisions	22	4,492	(19)	35,599	(501)	40,091	(520)
Residential mortgage-backed securities	118	17,168	(49)	302,407	(8,057)	319,575	(8,106)
Collateralized mortgage obligation securities	44	1,522	(3)	193,355	(3,991)	194,877	(3,994)
Commercial mortgage-backed securities	26	121,860	(2,020)	151,453	(3,887)	273,313	(5,907)
Total temporarily impaired
investment securities	249	$           294,474	$             (3,323)	$            739,664	$           (17,480)	$            1,034,138	$           (20,803)

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	$                      -	$                      -	$                7,278	$             (1,890)	$                  7,278	$             (1,890)
Total temporarily impaired
investment securities	1	$                      -	$                      -	$                7,278	$             (1,890)	$                  7,278	$             (1,890)