Derivative Instruments and Hedging Activities - Non-hedge Derivatives (Details) - Interest Rate Swap - Derivatives not designated as hedging instruments - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Notional Amount, Asset	$ 7,140
Notional Amount, Liability	7,140
Notional Amount	14,280	$ 0
Estimated Fair Value, Asset	150
Estimated Fair Value, Liability	$ (150)