CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Common Stock | Additional Paid-in- Capital | Treasury Stock | Accumulated Other Comprehensive (Loss) Income | Accumulated Deficit | Total |
Beginning balance at Jan. 02, 2021 | $ 51 | $ 260,260 | $ (7,146) | $ (215) | $ (169,461) | $ 83,489 |
Beginning balance (in shares) at Jan. 02, 2021 | 48,091 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income (loss) | | | | | (2,722) | (2,722) |
Issuance of shares in connection with stock option exercise | | 163 | | | | 163 |
Issuance of shares in connection with stock option exercise (in shares) | 130 | | | | | |
Issuance of shares in connection with restricted stock units vesting | $ 2 | (6) | | | | (4) |
Issuance of shares in connection with restricted stock units vesting (in shares) | 2,382 | | | | | |
Share-based compensation | | 4,080 | | | | 4,080 |
Issuance of shares in connection with BOD Fees | | 6 | | | | 6 |
Unrealized gain (loss) on deferred compensation trust assets | | | | 35 | | 35 |
Effect of changes in foreign currencies | | | | 14 | | 14 |
Ending balance at Apr. 03, 2021 | $ 53 | 264,503 | (7,146) | (166) | (172,183) | 85,061 |
Ending balance (in shares) at Apr. 03, 2021 | 50,603 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income (loss) | | | | | 2,072 | 2,072 |
Issuance of shares in connection with stock option exercise | $ 2 | 2,615 | | | | 2,617 |
Issuance of shares in connection with stock option exercise (in shares) | 1,463 | | | | | |
Share-based compensation | | 3,821 | | | | 3,821 |
Issuance of shares in connection with BOD Fees | | 6 | | | | 6 |
Issuance of stock awards | | 389 | | | | 389 |
Issuance of stock awards (in shares) | 118 | | | | | |
Unrealized gain (loss) on deferred compensation trust assets | | | | 38 | | 38 |
Effect of changes in foreign currencies | | | | 16 | | 16 |
Ending balance at Jul. 03, 2021 | $ 55 | 271,334 | (7,146) | (112) | (170,111) | 94,020 |
Ending balance (in shares) at Jul. 03, 2021 | 52,184 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income (loss) | | | | | (4,659) | (4,659) |
Issuance of shares in connection with stock option exercise | | 451 | | | | 451 |
Issuance of shares in connection with stock option exercise (in shares) | 108 | | | | | |
Issuance of shares in connection with restricted stock units vesting (in shares) | 109 | | | | | |
Share-based compensation | | 4,364 | | | | 4,364 |
Issuance of shares in connection with BOD Fees | | 6 | | | | 6 |
Issuance of stock awards | | 233 | | | | 233 |
Issuance of stock awards (in shares) | 14 | | | | | |
Unrealized gain (loss) on deferred compensation trust assets | | | | (5) | | (5) |
Effect of changes in foreign currencies | | | | 60 | | 60 |
Ending balance at Oct. 02, 2021 | $ 55 | 276,388 | (7,146) | (57) | (174,770) | 94,470 |
Ending balance (in shares) at Oct. 02, 2021 | 52,415 | | | | | |
Beginning balance at Jan. 01, 2022 | $ 56 | 282,663 | (7,625) | 274 | (179,800) | 95,568 |
Beginning balance (in shares) at Jan. 01, 2022 | 52,960 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income (loss) | | | | | 2,103 | 2,103 |
Issuance of shares in connection with stock option exercise | | 792 | | | | 792 |
Issuance of shares in connection with stock option exercise (in shares) | 533 | | | | | |
Issuance of shares in connection with restricted stock units vesting | $ 1 | (1) | | | | |
Issuance of shares in connection with restricted stock units vesting (in shares) | 519 | | | | | |
Issuance of stock awards to consultants | | 81 | | | | 81 |
Issuance of stock awards to consultants (in shares) | 10 | | | | | |
Share-based compensation | | 4,225 | | | | 4,225 |
Issuance of shares in connection with BOD Fees | | 6 | | | | 6 |
Issuance of shares in connection with ESPP | | 431 | | | | 431 |
Issuance of shares in connection with ESPP (in shares) | 45 | | | | | |
Officers and directors stock purchase plan | | 23 | | | | 23 |
Officers and directors stock purchase plan (in shares) | 3 | | | | | |
Unrealized gain (loss) on deferred compensation trust assets | | | | (34) | | (34) |
Effect of changes in foreign currencies | | | | 20 | | 20 |
Ending balance at Apr. 02, 2022 | $ 57 | 288,220 | (7,625) | 260 | (177,697) | 103,215 |
Ending balance (in shares) at Apr. 02, 2022 | 54,070 | | | | | |
Beginning balance at Jan. 01, 2022 | $ 56 | 282,663 | (7,625) | 274 | (179,800) | $ 95,568 |
Beginning balance (in shares) at Jan. 01, 2022 | 52,960 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Issuance of shares in connection with stock option exercise (in shares) | | | | | | 665 |
Ending balance at Oct. 01, 2022 | $ 57 | 293,450 | (7,625) | 228 | (174,527) | $ 111,583 |
Ending balance (in shares) at Oct. 01, 2022 | 54,558 | | | | | |
Beginning balance at Apr. 02, 2022 | $ 57 | 288,220 | (7,625) | 260 | (177,697) | 103,215 |
Beginning balance (in shares) at Apr. 02, 2022 | 54,070 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income (loss) | | | | | 4,118 | 4,118 |
Issuance of shares in connection with stock option exercise | | 136 | | | | 136 |
Issuance of shares in connection with stock option exercise (in shares) | 70 | | | | | |
Issuance of shares in connection with restricted stock units vesting (in shares) | 220 | | | | | |
Share-based compensation | | 771 | | | | 771 |
Issuance of shares in connection with BOD Fees | | 6 | | | | 6 |
Officers and directors stock purchase plan | | 4 | | | | 4 |
Unrealized gain (loss) on deferred compensation trust assets | | | | (100) | | (100) |
Effect of changes in foreign currencies | | | | 104 | | 104 |
Ending balance at Jul. 02, 2022 | $ 57 | 289,137 | (7,625) | 264 | (173,579) | 108,254 |
Ending balance (in shares) at Jul. 02, 2022 | 54,360 | | | | | |
Increase (Decrease) in Stockholders' Equity | | | | | | |
Net income (loss) | | | | | (948) | (948) |
Issuance of shares in connection with stock option exercise | | 184 | | | | 184 |
Issuance of shares in connection with stock option exercise (in shares) | 63 | | | | | |
Issuance of shares in connection with restricted stock units vesting (in shares) | 72 | | | | | |
Share-based compensation | | 3,760 | | | | 3,760 |
Issuance of shares in connection with BOD Fees | | 6 | | | | 6 |
Issuance of shares in connection with BOD Fees (in shares) | 1 | | | | | |
Issuance of shares in connection with ESPP | | 363 | | | | 363 |
Issuance of shares in connection with ESPP (in shares) | 62 | | | | | |
Unrealized gain (loss) on deferred compensation trust assets | | | | (36) | | (36) |
Ending balance at Oct. 01, 2022 | $ 57 | $ 293,450 | $ (7,625) | $ 228 | $ (174,527) | $ 111,583 |
Ending balance (in shares) at Oct. 01, 2022 | 54,558 | | | | | |