Fair Value of Assets & Liabilities - Gains/(losses) on Nonrecurring Fair Value Measurements (Details) - Non Recurring - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net gains/(losses), Loans, net of unearned income	$ (1,274)	$ (4,639)	$ (6,113)	$ (4,436)
Net gains/(losses), Real estate acquired by foreclosure	(142)	(9)	(169)	26
Net gains/(losses), Other assets	(426)	(267)	(772)	(942)
Gain (loss) on financial assets measured on non-recurring basis	(3,093)	(5,979)	(9,261)	(6,620)
First Mortgages
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net gains/(losses), Loans held for sale	(4)	10	1	25
SBAs
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net gains/(losses), Loans held for sale	$ (1,247)	$ (1,074)	$ (2,208)	$ (1,293)