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Note 7 - Operating Leases (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Lease, Cost [Table Text Block]

		Three-month period ended March 31,
		2021				2020
Operating lease cost		$	187			$	168
Variable lease cost			19				18
Total lease cost		$	206			$	186

Lessee, Lease, Cash Flow Information [Table Text Block]

		Three-month period ended March 31,
		2021				2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases		$	181			$	164
Right-of-use assets obtained in exchange for lease liabilities:		$	-			$	-

Lessee, Lease, Balance Sheet Information [Table Text Block]

	Balance sheet classification		March 31, 2021				December 31, 2020
Assets:
Operating lease right-of-use asset	Other noncurrent assets		$	2,031			$	2,189
Liabilities:
Current operating lease liability	Accrued expenses and other current liabilities		$	679			$	680
Operating lease liability, net of current portion	Other noncurrent liabilities			1,373				1,524
Total operating lease liability			$	2,052			$	2,204
Weighted-average remaining lease term (years)				3.1				3.3
Weighted-average discount rate				4.5	%			4.5	%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

Maturity of Operating Lease Liabilities
2021		$	544
2022			695
2023			714
2024			276
Total lease payments			2,229
Less: Imputed interest			(177	)
Present value of remaining lease payments		$	2,052

X

- Definition

Tabular disclosure of balance sheet information related lessee's lease .

+ References

No definition available.

+ Details

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Namespace Prefix:	ulbi_
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Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of cash flow information related lessee's lease .

+ References

No definition available.

+ Details

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Namespace Prefix:	ulbi_
Data Type:	nonnum:textBlockItemType
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X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

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X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration