Commitments and Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Commitments to extend credit: | Home equity
Other Commitments [Line Items]
Contractual obligations	$ 213,793	$ 214,715
Commitments to extend credit: | Commercial real estate
Other Commitments [Line Items]
Contractual obligations	80,029	56,941
Commitments to extend credit: | Other commitments
Other Commitments [Line Items]
Contractual obligations	222,546	213,904
Standby letters of credit
Other Commitments [Line Items]
Contractual obligations	6,915	6,748
Commercial letters of credit
Other Commitments [Line Items]
Contractual obligations	$ 1,045	$ 1,249