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Note 17 - Commitments and Contingencies (Details Textual) - USD ($)		12 Months Ended
	Mar. 03, 2017	Dec. 31, 2016	Dec. 31, 2015	Oct. 02, 2016
Operating Leases Maximum Expiration Period		10 years
Operating Leases, Rent Expense, Net		$ 2,392,000	$ 2,700,000
Purchase Obligation		11,711,000
Defined Contribution Plan, Cost Recognized		2,502,000	$ 4,058,000
Subsequent Event [Member]
Defined Contribution Plan, Cost Recognized	$ 20,000
Accrued Liabilities [Member]
Loss Contingency Accrual		500,000
Maximum [Member]
Loss Contingency, Estimate of Possible Loss		$ 4,000,000
Minimum [Member]
Loss Contingency, Estimate of Possible Loss				$ 0

X

- Definition

The maximum expiration period for operating leases.

+ References

No definition available.

+ Details

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X

- Definition

The amount of the cost recognized during the period for defined contribution plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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- Definition

Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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X

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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X

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

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