Derivatives and Hedging Activities (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2020 USD ($) instrument loan	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) instrument loan
Derivative [Line Items]
Interest expense on cash flow hedges expected to be reclassified in 12 months		$ 605,000
Fair value of swaps in a net liability position		$ 6,400,000
Number of Participation Loans with Swap Contingent Liabilities | loan		1		1
Interest-rate swaps
Derivative [Line Items]
Derivative Asset, Notional Amount		$ 43,806,000		$ 10,502,000
Fair value of interest-rate swap assets	[1]	3,547,000		625,000
Derivative Liability, Notional Amount		43,806,000		35,048,000
Fair value of interest-rate swap liabilities	[1]	$ 3,547,000		$ 625,000
Number of Interest Rate Swaps | instrument		12		10
Gain (Loss) on Interest Rate Swaps		$ 0	$ 0
Counterparty Credit Risk Exposure on Interest Rate Swaps		0		$ 0
Collateral posted for interest-rate swaps		6,600,000		850,000
Interest-rate swaps | Cash Flow Hedging
Derivative [Line Items]
Derivative Asset, Notional Amount		0
Fair value of interest-rate swap assets	[1]	0
Derivative Liability, Notional Amount		75,000,000
Fair value of interest-rate swap liabilities	[1]	$ 2,869,000
Number of Interest Rate Swaps | instrument		3
Derivative, individual notional amount		$ 25,000,000
Interest-rate swaps | Cash Flow Hedging | Contract one
Derivative [Line Items]
Derivative, term of contract		3 years
Interest-rate swaps | Cash Flow Hedging | Contract two
Derivative [Line Items]
Derivative, term of contract		4 years
Interest-rate swaps | Cash Flow Hedging | Contract three
Derivative [Line Items]
Derivative, term of contract		5 years
Pay Fixed Receive Variable | Interest-rate swaps
Derivative [Line Items]
Derivative Asset, Notional Amount		$ 0		0
Fair value of interest-rate swap assets	[1]	0		0
Derivative Liability, Notional Amount		43,806,000		22,775,000
Fair value of interest-rate swap liabilities	[1]	3,547,000		438,000
Gross Amount Interest Rate Swap Liabilities Recognized				625,000
Gross Amount Interest-Rate offset in the Statement of Financial Position				187,000
Pay Fixed Receive Variable | Interest-rate swaps | Cash Flow Hedging
Derivative [Line Items]
Derivative Asset, Notional Amount		0
Fair value of interest-rate swap assets	[1]	0
Derivative Liability, Notional Amount		75,000,000
Fair value of interest-rate swap liabilities	[1]	2,869,000
Receive Fixed Pay Variable | Interest-rate swaps
Derivative [Line Items]
Derivative Asset, Notional Amount		43,806,000		10,502,000
Fair value of interest-rate swap assets	[1]	3,547,000		625,000
Derivative Liability, Notional Amount		0		12,273,000
Fair value of interest-rate swap liabilities	[1]	$ 0		$ 187,000

[1] Accrued interest balances related to the Company’s interest rate swaps are not included in the fair values above and are immaterial.