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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - Supplemental Disclosures - USD ($)
3 Months Ended
Mar. 27, 2021
Mar. 28, 2020
SUPPLEMENTAL DISCLOSURES:    
Cash paid for interest $ 309,200 $ 460,600
Cash paid for income taxes 94,100 120,900
Reconciliation of cash, cash equivalents and restricted cash:    
Cash and cash equivalents 7,959,900 28,347,000
Restricted cash 25,000 50,000
Total cash, cash equivalents and restricted cash $ 7,984,900 $ 28,397,000