Loans and Allowance for Loan Losses (Schedule of Allowances for Loan Losses and Recorded Investment in Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Allowance for loan losses:
Beginning balance	$ 281,402	$ 250,555
Impact from adoption of ASU 2016-13			$ 82,994
Charge-offs	(23,874)	(20,699)
Recoveries	3,813	3,611
Provision for loan losses	149,117	23,569
Ending balance	493,452	257,036
Commercial & Industrial
Allowance for loan losses:
Beginning balance	145,782	133,123
Impact from adoption of ASU 2016-13			(2,310)
Charge-offs	(14,885)	(13,039)
Recoveries	1,741	1,990
Provision for loan losses	86,622	13,565
Ending balance	216,950	135,639
Commercial Real Estate
Allowance for loan losses:
Beginning balance	67,430	68,796
Impact from adoption of ASU 2016-13			(651)
Charge-offs	(1,017)	(1,233)
Recoveries	399	344
Provision for loan losses	40,956	1,102
Ending balance	107,117	69,009
Consumer
Allowance for loan losses:
Beginning balance	68,190	48,636
Impact from adoption of ASU 2016-13			$ 85,955
Charge-offs	(7,972)	(6,427)
Recoveries	1,673	1,277
Provision for loan losses	21,539	8,902
Ending balance	$ 169,385	$ 52,388

Loans and Leases Receivable, Allowance, Impact from Adoption

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of expense related to estimated loss from loan and lease transactions.

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