Goodwill and Intangible Assets - Acquired Intangible Assets (Details) - Core Deposits [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 8,401	$ 8,401
Accumulated Amortization	$ 3,020	$ 1,946