Premises, Equipment, and Leases - Maturity of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Abstract]
2020	$ 26,594
2021	24,627
2022	23,553
2023	22,687
2024	22,224
2025 and after	156,524
Total lease payments	276,209
Less lease liability interest	(50,373)
Total	$ 225,836