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Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Jan. 02, 2021 11,094      
Balance at Jan. 02, 2021 $ 11 $ 306,885 $ (294,409) $ 12,487
Common stock issued under stock plans and employee stock purchase plans (in shares) 354      
Common stock issued under stock plans and employee stock purchase plans $ 0 (484) 0 (484)
Net loss 0 0 (1,689) (1,689)
Stock-based compensation 0 368 0 368
Net loss $ 0 0 (1,689) (1,689)
Balance (in shares) at Apr. 04, 2021 11,448      
Balance at Apr. 04, 2021 $ 11 306,769 (296,098) 10,682
Balance (in shares) at Jan. 02, 2022 11,863      
Balance at Jan. 02, 2022 $ 12 310,222 (301,025) 9,209
Issuance of common stock under Public Stock Offering, net of stock issuance costs (in shares) 310      
Issuance of common stock under Public Stock Offering, net of stock issuance costs $ 0 1,482 0 1,482
Common stock issued under stock plans and employee stock purchase plans (in shares) 189      
Common stock issued under stock plans and employee stock purchase plans $ 0 0 0 0
Stock-based compensation 0 383 0 383
Net loss 0 0 (1,164) (1,164)
Net loss $ 0 0 (1,164) (1,164)
Balance (in shares) at Apr. 03, 2022 12,362      
Balance at Apr. 03, 2022 $ 12 $ 312,087 $ (302,189) $ 9,910