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Note 10 - Earnings Per Share (Details Narrative)	3 Months Ended
	Mar. 29, 2015	Mar. 30, 2014
Note 10 - Earnings Per Share Details Narrative
Employee stock options excluded from calculation of diluted earnings per share	2,179,756us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2,315,457us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Incremental shares included in EPS denominator due to share based payment arrangements	8,101us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Number of Employee stock options included in calculation of diluted earnings per share	97,700ULBI_DilutiveSecuritiesIncludedInComputationOfEarningsPerShareAmount	0ULBI_DilutiveSecuritiesIncludedInComputationOfEarningsPerShareAmount

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- Definition

No authoritative reference available.

+ References

No definition available.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 45

-Paragraph 28A

-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256

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