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Note 10 - Restructuring Costs (Details Textual)	3 Months Ended		12 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2011 USD ($)
Operating Segments [Member] | Selling, General and Administrative Expenses [Member]
Asset Impairment Charges	$ 2,700,000
Severance Costs	350,000
Impairment of Real Estate	5,000,000
Operating Segments [Member]
Restructuring and Related Cost, Incurred Cost	$ 8,100,000
Restructuring and Related Cost, Number of Positions Eliminated	100
Asset Impairment Charges	$ 7,718,000		$ 1,000,000

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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X

- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

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X

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
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X

- Definition

The number of positions eliminated during the period as a result of restructuring activities.

+ References

No definition available.

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X

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

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