Schedule I - Condensed Financial Information of Registrant (Details) - Parent Company Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Dec. 25, 2011
Assets        
Total assets $ 1,375,172 $ 1,380,921    
Spansion Inc. Stockholders’ equity:        
Additional paid-in capital 806,916 747,393    
Accumulated deficit (275,993) (205,959)    
Accumulated other comprehensive loss (2,302) (4,033) (1,484)  
Total stockholders' equity 528,684 537,460 561,774 522,541
Common Class A [Member] | Parent Company [Member]        
Spansion Inc. Stockholders’ equity:        
Class A common stock, $0.001 par value, 150,000,000 shares authorized, 62,585,032 shares issued and outstanding as of December 28, 2014 (58,882,949 as of December 29, 2013) 63 59    
Common Class A [Member]        
Spansion Inc. Stockholders’ equity:        
Class A common stock, $0.001 par value, 150,000,000 shares authorized, 62,585,032 shares issued and outstanding as of December 28, 2014 (58,882,949 as of December 29, 2013) 63 59    
Parent Company [Member]        
Assets        
Investment in subsidiaries 528,684 537,460    
Total assets 528,684 537,460    
Spansion Inc. Stockholders’ equity:        
Additional paid-in capital 806,916 747,393    
Accumulated deficit (275,993) (205,959)    
Accumulated other comprehensive loss (2,302) (4,033)    
Total stockholders' equity $ 528,684 $ 537,460