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Stockholders' Equity (Schedule Of Warrants) (Details) - $ / shares shares in Thousands	3 Months Ended	12 Months Ended
	Apr. 01, 2017	Dec. 31, 2016
Number of Shares
Warrants outstanding, Number of Shares, Beginning balance	4,924	7,633
Warrants granted, Number of Shares
Warrants exercised, Number of Shares		(2,709)
Warrants outstanding, Number of Shares, Ending balance	4,924	4,924
Weighted-Average Exercise Price
Warrants outstanding, Weighted-Average Exercise Price, Beginning balance	$ 0.66	$ 0.59
Warrants granted, Weighted-Average Exercise Price
Warrants exercised, Weighted-Average Exercise Price		0.47
Warrants outstanding, Weighted-Average Exercise Price, Ending balance	$ 0.66	$ 0.66

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Number of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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