Note 11 - Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 02, 2016	Mar. 28, 2015	Jan. 02, 2016
UNITED STATES
Long-lived assets	[1]	$ 24,906		$ 23,965
Additions to long-lived assets		1,618	$ 3,187
CHINA
Long-lived assets	[1]	78,840		37,241
Additions to long-lived assets		1,046	667
CANADA
Long-lived assets	[1]	11,069		10,488
Additions to long-lived assets		69	538
Other Countries [Member]
Long-lived assets	[1]	115,050		90,874
Additions to long-lived assets		6,406	7,887
Long-lived assets	[1]	229,865		$ 162,568
Additions to long-lived assets		$ 9,139	$ 12,279

[1] Long-lived assets consists of net property, plant and equipment.