The percentage of additional safe harbor contribution made by employer.

No definition available.

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- Definition

The number of directors participating in the Director Deferred Compensation Plan during the period.

+ References

No definition available.

+ Details

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- Definition

The number of installments available to participants to receive amounts contributed to their accounts under the deferred compensation arrangement.

+ References

No definition available.

+ Details

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- Definition

Percentage employer matches on the first 6% of the employee's deferred compensation.

+ References

No definition available.

+ Details

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- Definition

Defined contribution retirement plan minimum hours to participate in defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

+ Details

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Balance Type:	credit
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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Balance Type:	debit
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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 30
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for deferred compensation arrangements payable within one year (or the normal operating cycle, if longer). Represents currently earned compensation under cash arrangements (such as a profit-sharing plan, rabbi trust, and employee contract--excluding equity-based arrangements) that is not actually paid until a later date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 25
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=75028277&loc=d3e19793-108362

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 710
-SubTopic 10
-Section 30
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20028-108363

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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Period Type:	duration

- Definition

Percentage employer matches of the employee's percentage contribution matched.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Details

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Employee Benefit Plans (Details)	3 Months Ended		9 Months Ended
Employee Benefit Plans (Details)	Sep. 30, 2018 USD ($) Director	Sep. 30, 2017 USD ($) Director	Sep. 30, 2018 USD ($) Hour Installment Director	Sep. 30, 2017 USD ($) Director	Dec. 31, 2017 USD ($)
401(k) Plan [Abstract]
Minimum working hours to participate \| Hour			1,000
Annual contribution per employee			100.00%
Employer matching contribution percentage on first 6% of deferred compensation			100.00%
Percent of employee's compensation deferred that receives company match			6.00%
Additional safe harbor contribution by employer, percent			3.00%
401(k) expenses	$ 177,000	$ 167,000	$ 530,000	$ 521,000
Deferred Compensation Plan [Abstract]
Number of directors participated in Deferred Compensation Plan \| Director	0	0	0	0
Bank-owned life insurance	$ 91,000	$ 91,000	$ 271,000	$ 271,000
Accrued liability for deferred compensation program	103,000,000		103,000,000		$ 93,000,000
Former Key Employee [Member]
Deferred Compensation Plan [Abstract]
Deferred compensation expense	9,000	7,000	36,000	7,000
Bank-owned life insurance	7,000	$ 7,000	21,000	$ 21,000
Cash surrender value of life insurance policies	$ 1,300,000		$ 1,300,000		$ 1,300,000
Maximum [Member]
401(k) Plan [Abstract]
Employer matching contribution			6.00%
Deferred Compensation Plan [Abstract]
Number of installments for contributions \| Installment			5
Minimum [Member]
Deferred Compensation Plan [Abstract]
Number of installments for contributions \| Installment			1