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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Other Comprehensive Income Loss [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Balance at Dec. 31, 2021 $ 417,065 $ 66 $ 281,419 $ (1,983) $ 478,370 $ (340,807)
Balances (in shares) at Dec. 31, 2021   65,707,000       13,591,000
Employee stock purchase plan 564   511     $ 53
Employee stock purchase plan (in shares)           (6,000)
Amortization of unrecognized stock-based compensation 4,094   4,094      
Purchase of treasury stock (48,554)         $ (48,554)
Purchase of treasury stock (in shares)           553,000
Foreign currency translation adjustments (310)     (310)    
Grant of restricted stock units to settle accrued bonus 10,200   10,200      
Settlement of restricted stock units (12,904)   (2,335)   (1,392) $ (9,177)
Settlement of restricted stock units (in shares)           (253,000)
Dividends and dividend equivalent rights (13,200)       (13,200)  
Net income 29,609       29,609  
Balance at Apr. 01, 2022 386,564 $ 66 293,889 (2,293) 493,387 $ (398,485)
Balances (in shares) at Apr. 01, 2022   65,707,000       13,885,000
Balance at Dec. 30, 2022 320,752 $ 66 301,002 (3,587) 528,810 $ (505,539)
Balances (in shares) at Dec. 30, 2022   65,707,000       15,064,000
Employee stock purchase plan 580   517     $ 63
Employee stock purchase plan (in shares)           (6,000)
Amortization of unrecognized stock-based compensation 4,205   4,205      
Foreign currency translation adjustments 460     460    
Grant of restricted stock units to settle accrued bonus 10,497   10,497      
Settlement of restricted stock units (9,920)   (1,741)   (1,009) $ (7,170)
Settlement of restricted stock units (in shares)           (178,000)
Exercise of stock options 100   22     $ 78
Exercise of stock options (in shares)           (8,000)
Dividends and dividend equivalent rights (13,942)       (13,942)  
Net income 29,124       29,124  
Balance at Mar. 31, 2023 $ 341,856 $ 66 $ 314,502 $ (3,127) $ 542,983 $ (512,568)
Balances (in shares) at Mar. 31, 2023   65,707,000       14,872,000