Investment Securities and Other Investments - Continuous Unrealized Loss Position - Additional information (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) security	Dec. 31, 2017 USD ($)
Schedule Of Available For Sale Securities
Securities held to maturity, fair value \| $	$ 1,735	$ 1,762
Gross Unrealized Losses \| $	26	1
Securities of U.S. government and federal agencies
Schedule Of Available For Sale Securities
Securities held to maturity, fair value \| $	1,477	1,496
Gross Unrealized Losses \| $	$ 20	$ 1
Securities of U.S. government and federal agencies \| Held-to-maturity
Schedule Of Available For Sale Securities
Number of investment securities	1
Securities of U.S. government and federal agencies \| Available-for-sale
Schedule Of Available For Sale Securities
Number of investment securities	1
Securities of state and local municipalities
Schedule Of Available For Sale Securities
Number of investment securities	9
Securities of state and local municipalities \| AA+
Schedule Of Available For Sale Securities
Number of investment securities	5
Securities of state and local municipalities \| AA-
Schedule Of Available For Sale Securities
Number of investment securities	1
Securities of state and local municipalities \| AA
Schedule Of Available For Sale Securities
Number of investment securities	1
Securities of state and local municipalities \| No rating
Schedule Of Available For Sale Securities
Number of investment securities	2
Corporate bonds
Schedule Of Available For Sale Securities
Number of investment securities	2
Corporate bonds \| A-
Schedule Of Available For Sale Securities
Number of investment securities	1
Mortgage-backed securities
Schedule Of Available For Sale Securities
Number of investment securities	54
Collateralized mortgage obligations
Schedule Of Available For Sale Securities
Number of investment securities	31

The number of Investment Securities in debt and equity securities.

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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