Loans - Information By Class Related To Individually Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2019
Recorded Investment
Recorded Investment		$ 246,900
Unpaid Principal Balance
Unpaid Principal Balance		281,089
Related Allowance		25,916
Average Recorded Investment
Average Recorded Investment	$ 257,841
Interest Income Recognized
Interest Income Recognized	1,546
Commercial
Recorded Investment
Impaired loans with no related allowance recorded, Recorded investment		54,235
Impaired loans with related allowance recorded, Recorded investment		29,766
Recorded Investment		84,001
Unpaid Principal Balance
Impaired loans with no related allowance recorded, Unpaid principal balance		65,165
Impaired loans with related allowance recorded, Unpaid principal balance		31,536
Unpaid Principal Balance		96,701
Related Allowance		6,196
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	57,321
Impaired loans with related allowance recorded, Average recorded investment	10,524
Average Recorded Investment	67,845
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	193
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	4
Interest Income Recognized	197
Consumer
Recorded Investment
Impaired loans with no related allowance recorded, Recorded investment		12,533
Impaired loans with related allowance recorded, Recorded investment		150,366
Recorded Investment		162,899
Unpaid Principal Balance
Impaired loans with no related allowance recorded, Unpaid principal balance		20,492
Impaired loans with related allowance recorded, Unpaid principal balance		163,896
Unpaid Principal Balance		184,388
Related Allowance		19,720
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	16,234
Impaired loans with related allowance recorded, Average recorded investment	173,762
Average Recorded Investment	189,996
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	1,349
Interest Income Recognized	1,349
Commercial, financial, and industrial | Commercial | C&I
Recorded Investment
Impaired loans with no related allowance recorded, Recorded investment		52,672
Impaired loans with related allowance recorded, Recorded investment		29,766
Unpaid Principal Balance
Impaired loans with no related allowance recorded, Unpaid principal balance		63,602
Impaired loans with related allowance recorded, Unpaid principal balance		31,536
Related Allowance		6,196
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	55,765
Impaired loans with related allowance recorded, Average recorded investment	7,294
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	180
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0
Commercial, financial, and industrial | Commercial | Loans to Mortgage Companies
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	0
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0
Commercial, financial, and industrial | Commercial | TRUPS
Recorded Investment
Impaired loans with related allowance recorded, Recorded investment		0
Unpaid Principal Balance
Impaired loans with related allowance recorded, Unpaid principal balance		0
Related Allowance		0
Average Recorded Investment
Impaired loans with related allowance recorded, Average recorded investment	2,863
Interest Income Recognized
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0
Commercial real estate | Commercial | Income CRE
Recorded Investment
Impaired loans with no related allowance recorded, Recorded investment		1,563
Impaired loans with related allowance recorded, Recorded investment		0
Unpaid Principal Balance
Impaired loans with no related allowance recorded, Unpaid principal balance		1,563
Impaired loans with related allowance recorded, Unpaid principal balance		0
Related Allowance		0
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	1,556
Impaired loans with related allowance recorded, Average recorded investment	367
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	13
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	4
Commercial real estate | Commercial | Residential CRE
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	0
Impaired loans with related allowance recorded, Average recorded investment	0
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0
Consumer real estate | Consumer | HELOC
Recorded Investment
Impaired loans with no related allowance recorded, Recorded investment		4,940
Impaired loans with related allowance recorded, Recorded investment		55,522
Unpaid Principal Balance
Impaired loans with no related allowance recorded, Unpaid principal balance		10,438
Impaired loans with related allowance recorded, Unpaid principal balance		59,122
Related Allowance		7,016
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	7,597
Impaired loans with related allowance recorded, Average recorded investment	65,013
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	522
Consumer real estate | Consumer | R/E Installment Loans
Recorded Investment
Impaired loans with no related allowance recorded, Recorded investment		7,593
Impaired loans with related allowance recorded, Recorded investment		94,191
Unpaid Principal Balance
Impaired loans with no related allowance recorded, Unpaid principal balance		10,054
Impaired loans with related allowance recorded, Unpaid principal balance		104,121
Related Allowance		12,282
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	8,637
Impaired loans with related allowance recorded, Average recorded investment	108,059
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	822
Credit Card and Other | Consumer
Recorded Investment
Impaired loans with related allowance recorded, Recorded investment		653
Unpaid Principal Balance
Impaired loans with related allowance recorded, Unpaid principal balance		653
Related Allowance		$ 422
Average Recorded Investment
Impaired loans with related allowance recorded, Average recorded investment	690
Interest Income Recognized
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	$ 5