Loans - Information By Class Related To Individually Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 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	$ 287,938	$ 272,890
Interest Income Recognized
Interest Income Recognized	1,514	3,065
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	87,446	72,384
Impaired loans with related allowance recorded, Average recorded investment	13,913	12,218
Average Recorded Investment	101,359	84,602
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	191	384
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0	9
Interest Income Recognized	191	393
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	15,372	15,803
Impaired loans with related allowance recorded, Average recorded investment	171,207	172,485
Average Recorded Investment	186,579	188,288
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	1,323	2,672
Interest Income Recognized	1,323	2,672
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	67,337	61,552
Impaired loans with related allowance recorded, Average recorded investment	10,760	9,026
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	178	357
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0	0
Commercial, financial, and industrial | Commercial | Loans to Mortgage Companies
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	18,628	9,314
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0	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	2,806	2,835
Interest Income Recognized
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0	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	1,481	1,518
Impaired loans with related allowance recorded, Average recorded investment	347	357
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	13	27
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0	9
Commercial real estate | Commercial | Residential CRE
Average Recorded Investment
Impaired loans with no related allowance recorded, Average recorded investment	0	0
Impaired loans with related allowance recorded, Average recorded investment	0	0
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	0	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	6,462	7,030
Impaired loans with related allowance recorded, Average recorded investment	62,623	63,819
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	504	1,026
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	8,910	8,773
Impaired loans with related allowance recorded, Average recorded investment	107,892	107,975
Interest Income Recognized
Impaired loans with no related allowance recorded, Interest income recognized	0	0
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	815	1,637
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	692	691
Interest Income Recognized
Impaired Financing Impaired loans with related allowance recorded, Interest income recognized	$ 4	$ 9