Mergers - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($)	Dec. 31, 2019	Apr. 17, 2019	Dec. 31, 2018
Assets
Goodwill	$ 31,206,000		$ 412,000
Optima Bank And Trust Company
Assets
Cash and cash equivalents		$ 6,902,000
Investments		23,298,000
Loans		475,406,000
Premises and equipment		6,286,000
Goodwill		30,794,000
Core deposit and other intangibles		3,609,000
Other assets		9,408,000
Total assets acquired		555,703,000
Liabilities
Deposits		477,189,000
Borrowings		13,459,000
Other liabilities		799,000
Total liabilities assumed		491,447,000
Purchase price		$ 64,256,000