Fair Value of Assets and Liabilities (Summary of Assets Measured at Fair Value on a Nonrecurring Basis) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans-collateral based	$ 120,045	$ 127,269
Impaired loans-collateral based, Fair Value Losses Recognized, net	44,591
Other real estate owned, Fair Value Losses Recognized, net	3,034
Total, Fair Value Losses Recognized, net	47,625
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans-collateral based	120,000
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans-collateral based	90,307
Other real estate owned	15,171
Total financial assets	105,478
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans-collateral based	90,307
Other real estate owned	15,171
Total financial assets	$ 105,478