Securities Available for Sale and Held to Maturity - Gains and Losses as a Result of Calls and Disposition of Securities (Details) - Available for Sale [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Gains (losses) on Investments [Abstract]
Proceeds from calls and sales of securities	$ 26,409	$ 0	$ 26,409	$ 24,693
Gross realized gains	1	0	1	32
Gross realized (losses)	$ 0	$ 0	$ 0	$ (342)

The cash inflow associated with the sale and calls of debt and equity securities classified as available-for-sale securities which had a gain or a loss.

No definition available.

+ Details

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- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563

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- Definition

This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

+ References

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- References

No definition available.

+ Details

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- Details

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