Investment Securities (Details 4) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Cumulative roll forward of credit losses recognized in earnings for trust preferred securities
Beginning balance, Amount of OTTI related to credit loss			$ 140		$ 140
Additional credit losses on debt securities for which other-than- temporary impairment was previously recognized		$ 0	0
Ending balance, Amount of OTTI related to credit loss		140			140
Trust preferred securities
Cumulative roll forward of credit losses recognized in earnings for trust preferred securities
Beginning balance, Amount of OTTI related to credit loss	$ 140	140	140	$ 140	140
Additional credit losses on debt securities for which other-than- temporary impairment was previously recognized	0	0		0	0
Sale of debt securities	$ (140)			$ (140)
Ending balance, Amount of OTTI related to credit loss		$ 140	$ 140		$ 140

This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.

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- Definition

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=SL6284393-111563

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=SL6284393-111563

+ Details

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- Definition

This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security because of the sale of impaired securities during the period.

+ References

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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