Note 1 - Summary of Significant Accounting Policies - Reclassification (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Cost of sales	[1]	$ 87,605	$ 57,677	$ 180,999	$ 112,600
SG&A expense		$ 36,428	19,303	$ 74,714	35,089
Previously Reported [Member]
Cost of sales			58,316		113,915
SG&A expense			16,652		34,415
Restatement Adjustment [Member] | Amortization of Purchased Intangibles [Member]
Cost of sales			(639)		(1,315)
SG&A expense			(380)		(778)
Restatement Adjustment [Member] | Foreign Transaction Gains and (Losses) [Member]
Cost of sales
SG&A expense			$ 3,031		$ 1,452

[1] Excludes amortization of $7,625 and $639 for the three months ended June 29, 2019, and June 30, 2018, respectively, and $15,266 and $1,315 for the six months ended June 29, 2019, and June 30, 2018, respectively.