Income Taxes - Narrative (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) state	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	24.70%	24.70%
Income Tax Examination [Line Items]
Amount recognized as a component of income tax expense related low-income housing tax credit	$ 300,000	$ 100,000	$ 300,000
Investments related to low-income housing tax credits	4,000,000.0	1,400,000
Impairment losses recognized from forfeiture or ineligibility	0
Future capital commitments related to low-income housing tax credit investments	700,000
State valuation allowance	2,932,000	0
Deferred Tax Assets, Net	$ 14,379,000	20,724,000
Number of states the company files income tax returns in | state	11
Unrecognized tax benefits	$ 1,497,000	1,301,000	1,244,000	$ 1,180,000
Unrecognized tax benefits that would impact effective tax rate	1,100,000	900,000	$ 800,000
Reduction in unrecognized tax benefit that is reasonably possible due to a lapse of statute of limitations	$ 300,000
Duration of unrecognized tax benefits	12 months
Other Assets
Income Tax Examination [Line Items]
Deferred Tax Assets, Net	$ 14,400,000	$ 20,700,000