Number of shares of stock issued during the period pursuant to the exercise of warrants.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 235
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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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- Definition

The cash inflow from the additional capital contribution to the entity.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

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Stockholders' Equity (Details) - USD ($)						12 Months Ended
Stockholders' Equity (Details) - USD ($)	Aug. 13, 2018	Aug. 09, 2018	Mar. 21, 2018	Mar. 19, 2018	Mar. 23, 2016	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017	Mar. 26, 2013
Class of Stock [Line Items]
Proceeds from exercise of warrant						$ 0	$ 1,093,000	$ 0
Exercise price per warrant unit (in usd per share)									$ 7.80
Proceeds from common stock offering						$ 0	$ 100,330,000	$ 0
Unit warrant \| Underwriter
Class of Stock [Line Items]
Warrant units (in shares)									140,000
Proceeds from exercise of warrant				$ 1,093	$ 1,008
Proceeds from exercise of warrants, net of costs (in shares)			140,000
Follow-on offering \| Share-based payment arrangement, option \| Underwriter
Class of Stock [Line Items]
Proceeds from secondary offering, net of costs (in shares)		190,500
Follow-on offering \| Firm shares
Class of Stock [Line Items]
Proceeds from secondary offering, net of costs (in shares)		1,270,000
Shares issued, price per share		$ 79.00
Follow-on offering \| Firm shares \| Underwriter
Class of Stock [Line Items]
Proceeds from common stock offering	$ 93,469