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CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Non-controlling Interest
Beginning balance at Dec. 31, 2016 $ 501,009 $ 44,079 $ 0 $ 461,524 $ (5,000) $ 406
Comprehensive income:            
Net income (loss) 55,968     55,956   12
Other comprehensive income (loss), net of tax 733       733  
Change in ownership of non-controlling interest 0     0   0
Cash dividends (37,175)     (37,175)    
Common shares – treasury:            
Shares purchased (52,850) (1,301) (21,333) (30,216)    
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax 28,196 649 27,547      
Ending balance at Sep. 30, 2017 495,881 43,427 6,214 450,089 (4,267) 418
Beginning balance at Jul. 01, 2017 494,349 44,056 5,438 449,130 (4,633) 358
Comprehensive income:            
Net income (loss) 37,331     37,271   60
Other comprehensive income (loss), net of tax 365       365  
Change in ownership of non-controlling interest 0     0   0
Cash dividends (12,448)     (12,448)    
Common shares – treasury:            
Shares purchased (29,022) (779) (4,379) (23,864)    
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax 5,305 150 5,155      
Ending balance at Sep. 30, 2017 495,881 43,427 6,214 450,089 (4,267) 418
Beginning balance at Dec. 30, 2017 514,577 43,354 7,029 467,296 (3,611) 509
Comprehensive income:            
Net income (loss) 60,964     61,014   (50)
Other comprehensive income (loss), net of tax (584)       (584)  
Change in ownership of non-controlling interest 0     (41)   41
Cash dividends (38,201)     (38,201)    
Common shares – treasury:            
Shares purchased (14,884) (369) (9,879) (4,636)    
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax 31,202 835 30,367      
Ending balance at Sep. 29, 2018 553,074 43,820 27,517 485,432 (4,195) 500
Beginning balance at Jun. 30, 2018 525,294 43,736 26,077 458,458 (3,477) 500
Comprehensive income:            
Net income (loss) 39,907     39,907   0
Other comprehensive income (loss), net of tax (717)       (717)  
Change in ownership of non-controlling interest 0     0   0
Cash dividends (12,933)     (12,933)    
Common shares – treasury:            
Shares purchased (6,921) (163) (6,758) 0    
Shares issued under Members' Stock Purchase Plan and stock awards, net of tax 8,445 247 8,198      
Ending balance at Sep. 29, 2018 $ 553,074 $ 43,820 $ 27,517 $ 485,432 $ (4,195) $ 500