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Note 5 - Property, Equipment and Improvements (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014
Note 5 - Property Equipment And Improvements Details Narrative
Depreciation expense	$ 582,000	$ 754,000	$ 1,178,000	$ 1,465,000

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- References

No definition available.

+ Details

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Namespace Prefix:	ULBI_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 45



-Paragraph 28



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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