Fair Value Measurements (Financial Assets Measured at Fair Value on Nonrecurring Basis) (Details) - Nonrecurring [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	$ 182,377	$ 170,918
Other real estate owned and foreclosed assets	24,422
Other real estate owned		14,594
Total fair value measurements	206,799	185,512
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral dependent impaired loans	182,377	170,918
Total fair value measurements	182,377	170,918
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned and foreclosed assets	24,422
Other real estate owned		14,594
Total fair value measurements	$ 24,422	$ 14,594