Investment Securities - Securities With Unrealized Losses (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, less than 12 months, estimated fair value	$ 81,057
Available-for-sale, less than 12 months, gross unrealized losses	(488)
Available-for-sale, 12 months or more, estimated fair value	60,661
Available-for-sale, 12 months or more, gross unrealized losses	(1,030)
Available-for-sale, total, estimated fair value	141,718
Available-for-sale, total, gross unrealized losses	(1,518)
U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, less than 12 months, estimated fair value	3,209
Available-for-sale, less than 12 months, gross unrealized losses	(3)
Available-for-sale, 12 months or more, estimated fair value	56,007
Available-for-sale, 12 months or more, gross unrealized losses	(988)
Available-for-sale, total, estimated fair value	59,216
Available-for-sale, total, gross unrealized losses	(991)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, less than 12 months, estimated fair value	47,380
Available-for-sale, less than 12 months, gross unrealized losses	(161)
Available-for-sale, 12 months or more, estimated fair value	4,266
Available-for-sale, 12 months or more, gross unrealized losses	(41)
Available-for-sale, total, estimated fair value	51,646
Available-for-sale, total, gross unrealized losses	(202)
State and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, less than 12 months, estimated fair value	30,468
Available-for-sale, less than 12 months, gross unrealized losses	(324)
Available-for-sale, 12 months or more, estimated fair value	388
Available-for-sale, 12 months or more, gross unrealized losses	(1)
Available-for-sale, total, estimated fair value	30,856
Available-for-sale, total, gross unrealized losses	$ (325)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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