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Note 1 - Summary of Operations and Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Property, Plant and Equipment, Estimated Useful Life [Table Text Block] |
Buildings | 10 | – | 40
Machinery and Equipment | 5 | – | 10
Furniture and Fixtures | 5 | – | 10
Computer Hardware and Software | 3 | – | 5
Leasehold Improvements | Lesser of useful life or lease term

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- Definition The tabular disclosure of estimated useful life for property, plant and equipment. + References No definition available. + Details
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Namespace Prefix: | ulbi_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration