Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments and Classification on Consolidated Balance Sheet (Details) - Designated as hedging instrument - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	$ 743	$ 101
Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	3,436	2,287
Interest rate swap contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	743	101
Interest rate swap contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	3,436	0
Forward starting swap contracts | Other assets
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	0
Forward starting swap contracts | Other liabilities
Derivatives, Fair Value [Line Items]
Liability Derivatives	$ 0	$ 2,287