Borrowed Funds - Summary of Junior Subordinated Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Junior subordinated debentures, gross	$ 50,619	$ 50,619
Purchase accounting adjustment, net of amortization	(13,268)	(13,174)
Total junior subordinated debentures	37,351	37,445
3 month LIBOR plus 2.85%, due 2033
Debt Instrument [Line Items]
Junior subordinated debentures, gross	30,000	30,000
3 month LIBOR plus 2.95%, due 2033
Debt Instrument [Line Items]
Junior subordinated debentures, gross	5,155	5,155
3 month LIBOR plus 1.75%, due 2037
Debt Instrument [Line Items]
Junior subordinated debentures, gross	$ 15,464	$ 15,464

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