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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2023

Accounting Policies [Abstract]

Summary of Changes in Liability For Asset Retirement Obligations

Changes in the liability for the asset retirement obligations for the years ended March 31, 2023 and 2022 are summarized below (in thousands):

			2023						2022
Balance at beginning of the year			$	626					$	749
Liabilities settled			(79)						(109)
Revision of estimate			(6)						(17)
Accretion expense			2						3
Balance at end of the year			543						626
Less amount classified as current - included in accounts payable and accrued expenses			30						85
Noncurrent liabilities - included in other liabilities			$	513					$	541

Valuation Allowance

Changes in valuation allowance for the years ended March 31, 2023, 2022 and 2021 are summarized below (in thousands):

			2023						2022						2021
Balance at beginning of the year			$	79,998					$	65,304					$	47,664
Charged to costs and expenses			1,218						979						124
Changes in net loss carryforward and other			4,768						13,715						17,516
Balance at end of the year			$	85,984					$	79,998					$	65,304

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- References

No definition available.

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- Definition

Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- Definition

Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319

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