Stockholders' Equity (Deficit) - Shares Authorized and Outstanding (Details) - shares	Feb. 03, 2019	Dec. 30, 2018	Dec. 31, 2017
Authorized shares of preferred stock		5,000,000
Authorized shares of common stock		100,000,000
Outstanding shares of common stock , net of repurchased stock		31,400,000	33,900,000
Preferred shares issued		0	0
Preferred shares outstanding		0	0
Securities Purchase Agreement \| Subsequent events \| Series B Preferred Stock
Number of shares sold	200,000

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt.

+ References

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Number of new stock issued during the period.

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