XML 46 R34.htm IDEA: XBRL DOCUMENT v3.20.2
Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 28, 2020
Jun. 27, 2020
Jun. 29, 2019
Dec. 28, 2019
Changes in the carrying amount of goodwill        
Goodwill   $ 159,800   $ 164,921
Accumulated goodwill impairment   (71,900)   (76,417)
Balance at the beginning of the period, Goodwill, net $ 88,504 88,504    
Foreign currency translation adjustment and other (1)   (590)    
Balance at the end of the period, Goodwill, net   87,914    
Decrease to goodwill from dissolution and final liquidation of GNU123 Liquidating Corporation 4,500      
Decrease to accumulated impairment loss on goodwill from dissolution and final liquidation of GNU123 Liquidating Corporation $ 4,500      
Accumulated impairment   71,900   $ 76,417
Intangible assets impairment losses   $ 0 $ 0