STOCK-BASED COMPENSATION (Options Rollforward) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Stock-Based Compensation [Abstract]
Outstanding options at beginning of period (in shares)	686	507
Options granted	165	416
Exercise of stock options (in shares)	(3)	(6)
Options forfeited or expired (in shares)	(309)	(231)
Outstanding options at end of period (in shares)	539	686	507
Options Exercisable	266
Exercisable Weighted Average Exercise Price	$ 8.09
Options Exercisable Weighted Average Remaining Contractual Term	4 years 2 months 12 days
Outstanding Weighted Average Price at beginning of period	$ 9.15	$ 16.66
Granted Weighted Average Exercise Price	4.20	5.55
Exercised Weighted Average Exercise Price	5.42	5.90
Forfeited or Expired Weighted Average Exercise Price	11.04	19.44
Outstanding Weighted Average Price at end of period	$ 6.60	$ 9.15	$ 16.66
Options Outstanding Weighted Average Remaining Contractual Term	6 years 7 months 6 days	5 years 8 months 12 days	5 years 3 months 18 days
Stock Options Exercisable Intrinsic Value	$ 187
Stock Options Exercised In Period Total Intrinsic Value	5	$ 4
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 598	$ 1

Performance Shares, Stock Options, Other Forms Of Compensation And Common Share Repurchaces [Abstract]

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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