The number of common shares that increased to the number of shares reserved for issuance annually.

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The percentage of common shares outstanding that increased the number of shares reserved for issuance annually.

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Represents the denominator in the ratio used to determine the number of share-based awards granted each quarter, if greater than the closing share price of common stock on the last trading day of the fiscal quarter (otherwise, such closing share price is used as the denominator).

+ References

No definition available.

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Represents the numerator in the ratio used to determine the number of share-based awards granted each quarter.

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No definition available.

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Weighted average remaining period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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No definition available.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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Amount of cost capitalized for award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Number of shares authorized for issuance under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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Amount of cost expensed and capitalized for award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note 10 - Share-based Compensation (Details Textual) - USD ($)			12 Months Ended
	Jan. 01, 2021	Jan. 29, 2020	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 5.32	$ 3.56
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		515,036	772,435
Share-based Payment Arrangement, Expensed and Capitalized, Amount, Total		$ 569,000
Share-based Payment Arrangement, Expense		412,000	$ 1,661,000	$ 2,952,000
Share-based Payment Arrangement, Amount Capitalized		$ 157,000
Share-based Compensation Arrangement by Share-based Payment Award, Remaining Weighted Average Award Vesting Period (Year)		3 years
Share Price (in dollars per share)			$ 1.94
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value			$ 3,000	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)			$ 3.10	$ 1.73
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)			772,435	342,232
Non-employee Directors and Employees [Member]
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount			$ 2,500,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 9 months 18 days
Minimum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 10.05
Maximum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 97.21
The 2016 Plan [Member]
Annual Increase, Percentage of Common Shares Outstanding			4.00%
Annual Increase, Number of Common Shares (in shares)	1,000,000		268,997
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)			10 years
Share-based Payment Arrangement, Option [Member] \| The 2016 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)			133,330
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount			$ 61,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			131,375
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)			118,472
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)			200,271	224,311
Restricted Stock Units (RSUs) [Member] \| Non-employee Directors and Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance (in shares)			200,271
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)			194,803
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)			5,468
Restricted Stock Units (RSUs) [Member] \| Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			112,583	113,976
Restricted Stock Units (RSUs) [Member] \| Director [Member]
Number of Share-based Awards Granted Quarterly, Numerator in Ratio				$ 92,500
Number of Share-based Awards Granted Quarterly, Denominator in Ratio				4
Restricted Stock Units (RSUs) [Member] \| Director [Member] \| Share-based Payment Arrangement, Tranche One [Member]
Share-based Payment Arrangement, Expense				$ 190,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)				122,977
Restricted Stock Units (RSUs) [Member] \| Director [Member] \| Share-based Payment Arrangement, Tranche Two [Member]
Share-based Payment Arrangement, Expense				$ 613,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)				69,321
Restricted Stock Units (RSUs) [Member] \| Maximum [Member] \| Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)				2 years