v3.10.0.1

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Wexford Capital Ownership Percentage	18.70%		18.70%
Wexford Capital, Shares Purchased in Rights Offering			352,845
Director [Member]
Related Party Transaction [Line Items]
Revenues and NAF contributions	$ 412	$ 543	$ 794	$ 1,037
Accounts receivable from related parties	296		296		$ 301
Investor [Member]
Related Party Transaction [Line Items]
Revenues and NAF contributions	83		158
Accounts receivable from related parties	$ 45		$ 45		$ 32

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- Definition

Wexford capital ownership percentage.

+ References

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- Definition

Shares purchased by Wexford Capital in rights offering.

+ References

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- Definition

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Amount of transactions with related party during the financial reporting period.

+ References

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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.

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