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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 28, 2021
Accounting Policies [Abstract]  
Revenue from External Customers by Geographic Areas
Concentration of Credit Risk
 
Concentration of credit risk is limited due to the Company's diverse client partner base and their dispersion across many different industries and geographic locations nationwide. No single client partner accounted for more than 10% of the Company’s accounts receivable as of March 28, 2021 and December 27, 2020 or revenue for the thirteen week periods ended March 28, 2021 and March 29, 2020. Geographic revenue in excess of 10% of the Company's consolidated revenue in Fiscal 2021 and the related percentage for Fiscal 2020 was generated in the following areas:     
Thirteen Weeks Ended
March 28,
2021
March 29,
2020
Tennessee12 %16 %
Texas28 %24 %

Consequently, weakness in economic conditions in these regions could have a material adverse effect on the Company’s financial position and results of future operations.
Summary of Valuation Allowance
Changes in the allowance for credit losses are as follows:
 Thirteen Weeks Ended
 March 28, 2021March 29, 2020
Beginning balance$492,087 $468,233 
EdgeRock Technology Holdings, Inc. (“EdgeRock”) acquisition— 47,498 
Provision for credit losses, net34,758 31,658 
Amounts written off, net(34,758)(28,908)
Ending balance$492,087 $518,481 
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following is a reconciliation of the number of shares used in the calculation of basic and diluted earnings per share for the respective periods:
 Thirteen Weeks Ended
 March 28,
2021
March 29,
2020
Weighted-average number of common shares outstanding:10,332,815 10,308,445 
Effect of dilutive securities: 
Stock options and restricted stock62,024 61,859 
Warrants — 12,695 
Weighted-average number of diluted common shares outstanding10,394,839 10,382,999 
Stock options and restricted stock423,350 423,150 
Warrants 25,862 — 
Antidilutive shares449,212 423,150