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Regulatory Matters (Parenthetical) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Second Year Phased In [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital required including percentage of capital conservation buffer	1.25%
First Year Phased In [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum capital required including percentage of capital conservation buffer		0.625%

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- Definition

Minimum capital required including percentage of capital conservation buffer.

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No definition available.

+ Details

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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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- Details

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