Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net and Variable Interest Entities (Investments in Qualified Affordable Housing Partnerships, Net) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Investments in Qualified Affordable Housing Partnerships, Net [Abstract]
Minimum compliance period for qualified affordable housing partnerships to fully utilize the tax credits (in years)	15 years
Investments in qualified affordable housing partnerships, net	$ 198,653		$ 207,037
Accrued expenses and other liabilities — Unfunded commitments	77,487		$ 80,294
Tax credits and other tax benefits recognized	11,031	$ 11,826
Amortization expense included in income tax expense	$ 8,384	$ 8,897