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Stockholders' Equity (Tables) | 6 Months Ended
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Jul. 01, 2018
Equity [Abstract] |
Summary of Changes in Stockholders' Equity | A summary of the changes in stockholders’ equity is provided below (in millions):
| For the Six Months Ended
| July 1, 2018 |  | June 25, 2017
Stockholders’ equity at beginning of period | $ | 511.5 |  |  | $ | 276.4 |
Impact from the adoption of ASC 606 (Note 1) | (0.2 | ) |  | — |
Comprehensive loss: |  |  |  |  |
Net loss | (9.9 | ) |  | (16.2 | )
Change in cumulative translation adjustment | — |  |  | 0.1 |
Total comprehensive loss | (9.9 | ) |  | (16.1 | )
Exercise of stock options and warrants | — |  |  | 0.4 |
Stock-based compensation | 3.4 |  |  | 4.0 |
Issuance of common stock for cash | — |  |  | 81.9 |
Issuance of common stock for employee stock purchase plan | 1.8 |  |  | 1.4 |
Restricted stock units traded for taxes | (0.1 | ) |  | (1.0 | )
Stockholders’ equity at end of period | $ | 506.5 |  |  | $ | 347.0 |
Components of Accumulated Other Comprehensive Loss | The components of accumulated other comprehensive loss are as follows (in millions):
| For the Six Months Ended
| July 1, 2018 |  | June 25, 2017
Cumulative translation adjustment | $ | (1.0 | ) |  | $ | (0.9 | )
Post-retirement benefit reserve adjustment net of tax expense | (0.4 | ) |  | (0.6 | )
Accumulated other comprehensive loss | $ | (1.4 | ) |  | $ | (1.5 | )
Rollforward of Common Stock Outstanding | Common stock issued by the Company for the six months ended July 1, 2018 and June 25, 2017 was as follows (in millions):
| For the Six Months Ended
| July 1, 2018 |  | June 25, 2017
Shares outstanding at beginning of the period | 103.3 |  |  | 73.9 |
Stock issued for cash | — |  |  | 11.9 |
Stock issued for employee stock purchase plan, stock options and restricted stock units exercised | 0.2 |  |  | 0.8 |
Shares outstanding at end of the period | 103.5 |  |  | 86.6 |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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