Derivatives - Narrative (Details)	3 Months Ended
	Mar. 31, 2020 USD ($) derivative_swap	Mar. 31, 2019 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2019 USD ($)
Derivatives, Fair Value [Line Items]
Collateral requirement threshold	$ 250,000
Collateral posted	9,300,000			$ 4,700,000
Derivative notional amount	$ 93,400,000			94,400,000
Number of derivatives | derivative_swap	8
Interest rate swap income	$ 0	$ 0
Residential Mortgage Holding Company
Derivatives, Fair Value [Line Items]
Commitments to originate mortgage loans held for sale	197,900,000			48,800,000
Variable to Fixed
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 46,700,000
Number of derivatives | derivative_swap	8
Fixed to Variable
Derivatives, Fair Value [Line Items]
Derivative notional amount	$ 46,700,000
Number of derivatives | derivative_swap	8
Subordinated Debt
Derivatives, Fair Value [Line Items]
Junior subordinated debenture			$ 10,000,000.0
Junior subordinated debenture, effective interest rate (percent)			3.72%
Debt instrument, interest rate during period (percent)	2.11%
Subordinated Debt | LIBOR
Derivatives, Fair Value [Line Items]
Debt instrument, basis spread on variable rate (percent)			1.37%
Designated as Hedging Instrument | Interest rate swaps
Derivatives, Fair Value [Line Items]
Cash pledged to collateralize fair value exposure on interest rate swap	$ 2,900,000			1,300,000
Unrealized gain (loss) on interest rate swap	$ 2,400,000			$ 534,000