Loans Receivable, Including Loans Held For Sale - Changes in Allowance for Loan and Lease Losses (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Receivable [Line Items]
December 31, 2019	$ 36,682
Charge-offs	(27,184)
Recoveries	2,425
Provision	30,705
June 30, 2020	42,628
Commercial real estate loans
Receivable [Line Items]
December 31, 2019	24
Charge-offs	0
Recoveries	17
Provision	(20)
June 30, 2020	21
Commercial and industrial
Receivable [Line Items]
December 31, 2019	10,920
Charge-offs	(10,109)
Recoveries	559
Provision	11,769
June 30, 2020	13,139
Consumer loans
Receivable [Line Items]
December 31, 2019	25,738
Charge-offs	(17,075)
Recoveries	1,849
Provision	18,956
June 30, 2020	$ 29,468