Variable Interest Entities - Additional Information (Details) $ in Thousands	Dec. 31, 2019 USD ($) entity	Dec. 31, 2018 USD ($)
Variable Interest Entity [Line Items]
Investments in qualified affordable housing projects, net	$ 458,476	$ 318,575
Other liabilities	$ 302,031	205,685
Number of consolidated entities | entity	4
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 275,900
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Maximum exposure to loss in unconsolidated VIEs	$ 689,360	$ 568,272