Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Net loss	$ (17,276)	$ (22,687)
Net loss attributable to noncontrolling interest		(44)
Net loss attributable to Cohu	(17,276)	(22,643)
Foreign currency translation adjustments	(929)	(5,262)
Adjustments related to postretirement benefits		474
Other comprehensive loss, net of tax	(929)	(4,788)
Other comprehensive loss attributable to noncontrolling interest		(4)
Other comprehensive loss attributable to Cohu	(929)	(4,784)
Comprehensive loss	(18,205)	(27,475)
Comprehensive loss attributable to noncontrolling interest		(48)
Comprehensive loss attributable to Cohu	$ (18,205)	$ (27,427)