The payments to acquire businesses based on the difference between actual and estimated amounts of working capital.

No definition available.

Name:	ulbi_PaymentsToAcquireBusinessesNetOfCashAcquiredWorkingCapitalAdjustment
Namespace Prefix:	ulbi_
Data Type:	xbrli:monetaryItemType
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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

+ Details

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Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460

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Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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-Paragraph 8
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Balance Type:	credit
Period Type:	duration

- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
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Data Type:	xbrli:monetaryItemType
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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

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Period Type:	duration

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
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Balance Type:	debit
Period Type:	instant

- Definition

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.5-02.6(b))
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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
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- Details

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- Details

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- Details

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- Details

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- Details

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Note 2 - Acquisition (Details Textual) - Accutronics Limited [Member] £ in Thousands, $ in Thousands					6 Months Ended
	Feb. 24, 2016 USD ($)	Feb. 24, 2016 GBP (£)	Jan. 13, 2016 USD ($)	Jan. 13, 2016 GBP (£)	Jun. 26, 2016 USD ($)
Payments to Acquire Businesses, Gross			$ 10,976	£ 7,575
Payments to Acquire Businesses, Net of Cash Acquired Working Capital Adjustment \| £		£ 133
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual					$ 5,033
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual					210
Business Combination, Consideration Transferred	$ 11,161	£ 7,708
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 4,374
Business Combination, Acquisition Related Costs					251
Inventory Adjustments					$ 96
Minimum [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years	10 years
Maximum [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years	15 years
Customer Contracts and Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 2,821
Intellectual Property [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	1,132
Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 421