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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($)
12 Months Ended
Jan. 01, 2019
Dec. 31, 2019
Dec. 31, 2020
Retained earnings   $ 47,562,000 $ 50,650,000
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201409Member us-gaap:AccountingStandardsUpdate201409Member  
Revision of Prior Period, Accounting Standards Update, Adjustment      
Retained earnings $ 57,000 $ 57,000