Represents the estimated measure of the percentage by which a share is expected to be forfeited during a period.

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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- Definition

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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- Definition

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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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Weighted average expected volatility rate of share-based compensation awards.

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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.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

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

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No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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SHARE BASED COMPENSATION - Summary of Plans and Stock Option Info (Details) - 2012 Plan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
SHARE BASED COMPENSATION
Number of shares authorized under the plan	1,700,000		1,700,000
Shares available to grant	856,182		856,182
Weighted average assumptions
Expected life (in years)			4 years 10 months 24 days	4 years 10 months 24 days
Risk-free interest rate (as a percent)			2.70%	1.90%
Volatility (as a percent)			64.00%	71.40%
Dividend yield (as a percent)			0.00%	0.00%
Forfeiture rate (as a percent)			23.10%	22.60%
General and Administrative Expense
SHARE BASED COMPENSATION
Share-based compensation expense	$ 118	$ 100	$ 433	$ 375
Stock Options
SHARE BASED COMPENSATION
Stock options outstanding (in shares)	1,183,510		1,183,510
Stock options granted during the period (in shares)			341,240
Restricted Stock Awards
SHARE BASED COMPENSATION
Unvested restricted shares outstanding	335,750		335,750
Granted (in shares)			170,000