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Securities - Trading Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 7,786	$ 7,150
Corporate equity securities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	5,828	5,125
Mutual Funds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	1,058	1,499
Certificates of deposit
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	268	220
Corporate notes and bonds
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	581	254
U.S. Gov’t sponsored entities
Debt and Equity Securities, FV-NI [Line Items]
Trading securities	$ 51	$ 52

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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.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.4)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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