v3.8.0.1

Securities - Additional Information (Details)	Mar. 31, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Weighted average yield, total	5.06%	5.13%
Agency Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Weighted average yield, total	2.56%

X

- Definition

Available for sale securities weighted average yield.

+ References

No definition available.

+ Details

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X

- 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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X

- Details

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Namespace Prefix:
Data Type:	na
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Period Type: