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Note 15 - Restructuring and Asset Impairment Charges - Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended		30 Months Ended
	Apr. 02, 2017	Jan. 01, 2017	Jul. 01, 2018	Dec. 31, 2017	Jan. 01, 2017	Jul. 01, 2018
Total restructuring charge	$ 7,300	$ 19,800
Employee Severance [Member]
Total restructuring charge	600					$ 10,652
Cost incurred			$ 1,543	$ 6,633	$ 1,451
Balance			1,025			1,025
Fixed Asset Impairment [Member]
Total restructuring charge	3,300					11,319
Cost incurred			0	3,300	8,019
Balance			0			0
Other Restructuring [Member]
Total restructuring charge	$ 3,400					5,116
Cost incurred			0	$ 5,089	$ 27
Balance			$ 0			$ 0

X

- Definition

Amount of expected cost remaining for the specified restructuring cost.

+ References

No definition available.

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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

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-Publisher FASB
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-SubTopic 10
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X

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

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