XML 60 R48.htm IDEA: XBRL DOCUMENT
v3.23.1

Note 6 - Share-based Compensation - Options Range of Exercise Prices (Details) - $ / shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021
Lower range limit (in dollars per share) | $ 4.29 |
Upper range limit (in dollars per share) | $ 9.96 |
Options outstanding, number of outstanding options (in shares) | 1,425,693 |
Options outstanding, weighted-average remaining contractual life (Year) | 4 years 1 month 28 days |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 6.72 |
Options exercisable, number of options exercisable (in shares) | 881,804 |
Options exercisable – weighted average exercise price (in dollars per share) | $ 7.13 | $ 6.85
Range One [Member] |  |
Lower range limit (in dollars per share) | 4.29 |
Upper range limit (in dollars per share) | $ 5.45 |
Options outstanding, number of outstanding options (in shares) | 516,949 |
Options outstanding, weighted-average remaining contractual life (Year) | 4 years 7 months 24 days |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 5.10 |
Options exercisable, number of options exercisable (in shares) | 197,001 |
Options exercisable – weighted average exercise price (in dollars per share) | $ 4.64 |
Range Two [Member] |  |
Lower range limit (in dollars per share) | 5.71 |
Upper range limit (in dollars per share) | $ 6.51 |
Options outstanding, number of outstanding options (in shares) | 302,244 |
Options outstanding, weighted-average remaining contractual life (Year) | 3 years 6 months 10 days |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 6.29 |
Options exercisable, number of options exercisable (in shares) | 224,937 |
Options exercisable – weighted average exercise price (in dollars per share) | $ 6.22 |
Range Three [Member] |  |
Lower range limit (in dollars per share) | 6.69 |
Upper range limit (in dollars per share) | $ 6.97 |
Options outstanding, number of outstanding options (in shares) | 177,667 |
Options outstanding, weighted-average remaining contractual life (Year) | 5 years 9 months 3 days |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 6.96 |
Options exercisable, number of options exercisable (in shares) | 65,362 |
Options exercisable – weighted average exercise price (in dollars per share) | $ 6.96 |
Range Four [Member] |  |
Lower range limit (in dollars per share) | 8.25 |
Upper range limit (in dollars per share) | $ 9.96 |
Options outstanding, number of outstanding options (in shares) | 428,833 |
Options outstanding, weighted-average remaining contractual life (Year) | 3 years 4 months 2 days |
Options outstanding, weighted-average exercise price (in dollars per share) | $ 8.88 |
Options exercisable, number of options exercisable (in shares) | 394,504 |
Options exercisable – weighted average exercise price (in dollars per share) | $ 8.92 |

X
- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ulbi_RangeOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ulbi_RangeTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ulbi_RangeThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ulbi_RangeFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |