Note 7 - Employee Benefits Plans - Impact of Deferred Compensation Plan and Corporate Owned Life Insurance Policies (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Growth in cash surrender value of corporate-owned life insurance policies		$ 301
Deferred compensation plan expenses	232	352
Operating loss impact	(232)	(51)
Interest expense on loans against corporate-owned life insurance polices		109
Net loss impact	$ (232)	$ (160)

Impact of the deferred compensation plan and corporate owned life insurance policies impact on net income.

No definition available.

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- Definition

Impact of the deferred compensation plan and corporate owned life insurance policies impact on operating income.

+ References

No definition available.

+ Details

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- Definition

Interest expense on loans against corporate owned life insurance policies.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-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

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- Definition

The change in cash surrender or contract value during the period which adjusted the amount of premiums paid in determining the expense or income recognized under the contract for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 325
-SubTopic 30
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6384439&loc=d3e42048-111605

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