Loans and the Allowance for Loan Losses (Details) - Loans held-for-sale - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Total carrying amount	$ 4,710	$ 33,250
Commercial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Total carrying amount		2,285
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Total carrying amount	1,990	30,965
Residential Mortgage Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Total carrying amount	$ 2,720