Allowance For Credit Losses - Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of the period	$ 71,124	$ 40,003
Charge-offs	(1,270)	(483)
Recoveries	206	141
Net (charge-offs) recoveries	(1,064)	(342)
Provision for credit loss - loans	(2,808)	9,223
Balance at end of the period	$ 67,252	$ 48,884