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Note 14 - Restructuring	3 Months Ended
	Mar. 31, 2019
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	14 . Restructuring In March 2018, the Company announced its plan to close its leased Permalok ® manufacturing facility in Salt Lake City, Utah and move the production to the Permalok ® production facility in St. Louis, Missouri, which was completed during the second quarter of 2018. Also in March 2018, the Company announced its plan to close its manufacturing facility in Monterrey, Mexico. Production ceased early in the second quarter of 2018, and the facility was sold in December 2018. The Company incurred restructuring expense of $0.3  million during the three months ended March  31, 2018, which includes employee severance and termination related restructuring expense of $0.2  million and expense related to demobilization activities of $0.1  million.

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The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-URI http://asc.fasb.org/topic&trid=2175745

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