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Condensed Consolidated Statements Of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Total
--- | --- | --- | --- | ---
Balance at Dec. 30, 2017 | $ 80 | $ 152,640 | $ (158,046) | $ (5,326)
Balance, shares at Dec. 30, 2017 | 79,314 |  |  |
Stock-based compensation |  | 241 |  | 241
Issuance of common stock, net | $ 5 | 1,789 |  | 1,794
Issuance of common stock, shares | 6,101 |  |  |
Net loss |  |  | (4,673) | (4,673)
Balance at Mar. 31, 2018 | $ 85 | 154,670 | (162,719) | (7,964)
Balance, shares at Mar. 31, 2018 | 85,415 |  |  |
Balance at Dec. 30, 2017 | $ 80 | 152,640 | (158,046) | (5,326)
Balance, shares at Dec. 30, 2017 | 79,314 |  |  |
Net loss |  |  |  | (12,734)
Balance at Sep. 29, 2018 | $ 138 | 169,176 | (170,780) | (1,466)
Balance, shares at Sep. 29, 2018 | 139,253 |  |  |
Balance at Dec. 30, 2017 | $ 80 | 152,640 | (158,046) | (5,326)
Balance, shares at Dec. 30, 2017 | 79,314 |  |  |
Net loss |  |  |  | 17,100
Balance at Dec. 29, 2018 | $ 139 | 169,355 | (175,166) | (5,672)
Balance, shares at Dec. 29, 2018 | 139,283 |  |  |
Balance at Mar. 31, 2018 | $ 85 | 154,670 | (162,719) | (7,964)
Balance, shares at Mar. 31, 2018 | 85,415 |  |  |
Stock-based compensation |  | 173 |  | 173
Issuance of common stock, net | $ 17 | 2,801 |  | 2,818
Issuance of common stock, shares | 16,393 |  |  |
Restricted stock units vested and distributed, shares | 525 |  |  |
Warrants issued in lieu of payments |  | 12 |  | 12
Net loss |  |  | (3,417) | (3,417)
Balance at Jun. 30, 2018 | $ 102 | 157,656 | (166,136) | (8,378)
Balance, shares at Jun. 30, 2018 | 102,333 |  |  |
Stock-based compensation |  | 157 |  | 157
Issuance of common stock, net | $ 36 | 11,116 |  | 11,152
Issuance of common stock, shares | 36,920 |  |  |
Warrants issued in lieu of payments |  | 57 |  | 57
Estimated fair value of conversion option, in connection with convertible debt |  | 190 |  | 190
Net loss |  |  | (4,644) | (4,644)
Balance at Sep. 29, 2018 | $ 138 | 169,176 | (170,780) | (1,466)
Balance, shares at Sep. 29, 2018 | 139,253 |  |  |
Balance at Dec. 29, 2018 | $ 139 | 169,355 | (175,166) | (5,672)
Balance, shares at Dec. 29, 2018 | 139,283 |  |  |
Stock-based compensation |  | 342 |  | 342
Exercise of stock options |  | 16 |  | 16
Exercise of stock options, shares | 43 |  |  |
Common stock issued on conversion of Iliad Note | $ 1 | 374 |  | 375
Common stock issued on conversion of Iliad Note (in shares) | 1,042 |  |  |
Net loss |  |  | (4,050) | (4,050)
Balance at Mar. 30, 2019 | $ 140 | 170,087 | (179,216) | (8,989)
Balance, shares at Mar. 30, 2019 | 140,708 |  |  |
Balance at Dec. 29, 2018 | $ 139 | 169,355 | (175,166) | $ (5,672)
Balance, shares at Dec. 29, 2018 | 139,283 |  |  |
Exercise of stock options, shares |  |  |  | 62
Restricted stock units vested and distributed, shares | 340 |  |  |
Net loss |  |  |  | $ (10,677)
Balance at Sep. 28, 2019 | $ 154 | 173,979 | (185,843) | (11,710)
Balance, shares at Sep. 28, 2019 | 154,097 |  |  |
Balance at Mar. 30, 2019 | $ 140 | 170,087 | (179,216) | (8,989)
Balance, shares at Mar. 30, 2019 | 140,708 |  |  |
Stock-based compensation |  | 197 |  | 197
Exercise of stock options |  | 6 |  | 6
Exercise of stock options, shares | 19 |  |  |
Tax withholdings related to net share settlements of equity awards (in shares) | (92) |  |  |
Issuance of commitment shares | $ 1 | (1) |  |
Issuance of commitment shares (in shares) | 818 |  |  |
Common stock issued on conversion of Iliad Note | $ 1 | 224 |  | 225
Common stock issued on conversion of Iliad Note (in shares) | 724 |  |  |
Net loss |  |  | (3,519) | (3,519)
Balance at Jun. 29, 2019 | $ 142 | 170,513 | (182,735) | (12,080)
Balance, shares at Jun. 29, 2019 | 142,177 |  |  |
Stock-based compensation |  | 243 |  | 243
Issuance of common stock, net | $ 8 | 2,449 |  | 2,457
Issuance of common stock, shares | 8,394 |  |  |
Restricted stock units vested and distributed, shares | 409 |  |  |
Tax withholdings related to net share settlements of equity awards |  | (39) |  | (39)
Tax withholdings related to net share settlements of equity awards (in shares) | (130) |  |  |
Common stock issued on conversion of Iliad Note | $ 4 | 813 |  | 817
Common stock issued on conversion of Iliad Note (in shares) | 3,247 |  |  |
Net loss |  |  | (3,108) | (3,108)
Balance at Sep. 28, 2019 | $ 154 | $ 173,979 | $ (185,843) | $ (11,710)
Balance, shares at Sep. 28, 2019 | 154,097 |  |  |

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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(31)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant