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Note 14 - Stock Repurchase Program (Details Textual) $ / shares in Units, $ in Millions		3 Months Ended	12 Months Ended
	Oct. 02, 2015 USD ($) shares	Dec. 31, 2015 $ / shares shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 shares
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | shares	550,000
Treasury Stock, Shares, Acquired | shares		65,283	0	0
Treasury Stock Acquired, Average Cost Per Share | $ / shares		$ 10.71
ABL Credit Facility [Member]
Unrestricted Common Stock Purchases, Maximum, Value	$ 5
ABL Credit Facility [Member] | Stock Repurchases Value Exceeds 5.0 Million, Option 1 [Member] | Minimum [Member]
Line of Credit Facility Covenant Terms Percentage of Revolver Commitments	20.00%
Balance Required for Compliance with Revolver Commitments			$ 80
ABL Credit Facility [Member] | Stock Repurchases Value Exceeds 5.0 Million, Option 2 [Member] | Minimum [Member]
Line of Credit Facility Covenant Terms Percentage of Revolver Commitments	15.00%
Balance Required for Compliance with Revolver Commitments			$ 60
Line of Credit Facility Covenant Terms EBITDA Ratio	1

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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X

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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- Definition

The minimum commitments or obligations by the company that would require the Company to maintain certain EBITDA ratios under the revolver commitments.

+ References

No definition available.

+ Details

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- Definition

Under the revolver commitments, the required ratio of EBITDA minus certain capital expenditures and cash taxes paid to fixed charges.

+ References

No definition available.

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X

- Definition

The percentage of covenants applied to revolver commitments in a line of credit.

+ References

No definition available.

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- Definition

The value of common stock repurchases allowable before restrictive measures are placed.

+ References

No definition available.

+ Details

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