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Note 11 Commitments and Contingencies (Detail Narrative) (USD $)	Mar. 29, 2015
Note 11 Commitments And Contingencies Detail Narrative
Unrecorded Unconditional Purchase Obligation	$ 412,000us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount

X

- Details

Name:	ULBI_Note11CommitmentsAndContingenciesDetailNarrativeAbstract
Namespace Prefix:	ULBI_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

+ Details

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant