Contingencies	12 Months Ended
Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Note 15 — Contingencies Periodically, the Company is involved in a variety of claims, suits, investigations and proceedings arising in the ordinary course of business, including government investigations and claims, and other claims and proceedings with respect to intellectual property, breach of contract, labor and employment, tax and other matters. Such matters could result in fines; penalties, compensatory, treble or other damages; or non-monetary relief. A violation of government contract laws and regulations could also result in the termination of its government contracts or debarment from bidding on future government contracts. Although claims, suits, investigations and proceedings are inherently uncertain and their results cannot be predicted with certainty, the Company believes that the resolution of its current pending matters will not have a material adverse effect on its business, financial condition, results of operations or liquidity. The Company has contracts with various U.S. Government agencies. Accordingly, the Company is routinely subject to audit and review by the DCMA, the DCAA and other U.S. Government agencies of its performance on government contracts, indirect rates and pricing practices, accounting and management internal control business systems, and compliance with applicable contracting and procurement laws, regulations and standards. An adverse outcome to a review or audit or other failure to comply with applicable contracting and procurement laws, regulations and standards could result in material civil and criminal penalties and administrative sanctions being imposed on the Company, which may include termination of contracts, forfeiture of profits, triggering of price reduction clauses, suspension of payments, significant customer refunds, fines and suspension, or a prohibition on doing business with U.S. Government agencies. In addition, if the Company fails to obtain an “adequate” determination of its various accounting and management internal control business systems from applicable U.S. Government agencies or if allegations of impropriety are made against it, the Company could suffer serious harm to its business or its reputation, including its ability to bid on new contracts or receive contract renewals and its competitive position in the bidding process. As of March 31, 2024, the DCMA had approved the Company's incurred costs through fiscal year 2022 with the exception of 2021, which is pending. The DCMA is currently auditing the Company's 2023 incurred cost submission. Although the Company has recorded contract revenues subsequent to fiscal year 2020 based upon an estimate of costs that the Company believes will be approved upon final audit or review, the Company does not know the outcome of any ongoing or future audits or reviews and adjustments and if future adjustments exceed the Company's estimates its profitability would be adversely affected. As of March 31, 2024 and 2023, the Company had $16.6 million and $12.9 million, respectively, in contract-related reserves for its estimate of potential refunds to customers for potential cost adjustments on several multi-year U.S. Government cost reimbursable contracts. This reserve is classified as either an element of accrued liabilities or as a reduction of unbilled accounts receivable based on the status of the related contracts. Certain matters resolved during fiscal years 2024 and 2023 On July 8, 2022, Cisco Systems, Inc. (Cisco), which previously acquired Acacia Communications, Inc. (Acacia), paid the Company $62.2 million in full satisfaction of the July 2019 judgment previously entered against Acacia related to Acacia's breach of contract and misuse of the Company's soft decision forward error correction technology. During the second quarter of fiscal year 2023, the Company recorded $55.8 million as product revenues in the Company's commercial networks segment and $6.4 million as interest income with respect to this payment. On May 8, 2023, Cisco paid the Company an additional $97.5 million under protest, pursuant to a judgment entered against Acacia on May 4, 2023 also related to Acacia's continued use of the Company's soft decision forward error correction technology. The 2023 judgment obligated Acacia to make contractual royalty payments to the Company based on the quarterly sales of certain of its products. Acacia appealed the May 2023 judgment and on September 29, 2023, the Company and Acacia settled all pending litigation between them. As a result, in the second quarter of fiscal year 2024 the Company recorded $99.9 million as product revenues in the Company's commercial networks segment and $7.2 million as interest income. Additionally, the Company may receive ongoing licensing and royalty payments under the settlement agreement.

Contingencies

12 Months Ended

Mar. 31, 2024

Commitments and Contingencies Disclosure [Abstract]

Note 15 — Contingencies

Periodically, the Company is involved in a variety of claims, suits, investigations and proceedings arising in the ordinary course of business, including government investigations and claims, and other claims and proceedings with respect to intellectual property, breach of contract, labor and employment, tax and other matters. Such matters could result in fines; penalties, compensatory, treble or other damages; or non-monetary relief. A violation of government contract laws and regulations could also result in the termination of its government contracts or debarment from bidding on future government contracts. Although claims, suits, investigations and proceedings are inherently uncertain and their results cannot be predicted with certainty, the Company believes that the resolution of its current pending matters will not have a material adverse effect on its business, financial condition, results of operations or liquidity.

The Company has contracts with various U.S. Government agencies. Accordingly, the Company is routinely subject to audit and review by the DCMA, the DCAA and other U.S. Government agencies of its performance on government contracts, indirect rates and pricing practices, accounting and management internal control business systems, and compliance with applicable contracting and procurement laws, regulations and standards. An adverse outcome to a review or audit or other failure to comply with applicable contracting and procurement laws, regulations and standards could result in material civil and criminal penalties and administrative sanctions being imposed on the Company, which may include termination of contracts, forfeiture of profits, triggering of price reduction clauses, suspension of payments, significant customer refunds, fines and suspension, or a prohibition on doing business with U.S. Government agencies. In addition, if the Company fails to obtain an “adequate” determination of its various accounting and management internal control business systems from applicable U.S. Government agencies or if allegations of impropriety are made against it, the Company could suffer serious harm to its business or its reputation, including its ability to bid on new contracts or receive contract renewals and its competitive position in the bidding process. As of March 31, 2024, the DCMA had approved the Company's incurred costs through fiscal year 2022 with the exception of 2021, which is pending. The DCMA is currently auditing the Company's 2023 incurred cost submission. Although the Company has recorded contract revenues subsequent to fiscal year 2020 based upon an estimate of costs that the Company believes will be approved upon final audit or review, the Company does not know the outcome of any ongoing or future audits or reviews and adjustments and if future adjustments exceed the Company's estimates its profitability would be adversely affected. As of March 31, 2024 and 2023, the Company had $16.6 million and $12.9 million, respectively, in contract-related reserves for its estimate of potential refunds to customers for potential cost adjustments on several multi-year U.S. Government cost reimbursable contracts. This reserve is classified as either an element of accrued liabilities or as a reduction of unbilled accounts receivable based on the status of the related contracts.

Certain matters resolved during fiscal years 2024 and 2023

On July 8, 2022, Cisco Systems, Inc. (Cisco), which previously acquired Acacia Communications, Inc. (Acacia), paid the Company $62.2 million in full satisfaction of the July 2019 judgment previously entered against Acacia related to Acacia's breach of contract and misuse of the Company's soft decision forward error correction technology. During the second quarter of fiscal year 2023, the Company recorded $55.8 million as product revenues in the Company's commercial networks segment and $6.4 million as interest income with respect to this payment.

On May 8, 2023, Cisco paid the Company an additional $97.5 million under protest, pursuant to a judgment entered against Acacia on May 4, 2023 also related to Acacia's continued use of the Company's soft decision forward error correction technology. The 2023 judgment obligated Acacia to make contractual royalty payments to the Company based on the quarterly sales of certain of its products. Acacia appealed the May 2023 judgment and on September 29, 2023, the Company and Acacia settled all pending litigation between them. As a result, in the second quarter of fiscal year 2024 the Company recorded $99.9 million as product revenues in the Company's commercial networks segment and $7.2 million as interest income. Additionally, the Company may receive ongoing licensing and royalty payments under the settlement agreement.

- Definition

The entire disclosure for loss and gain contingencies. Describes any existing condition, situation, or set of circumstances involving uncertainty as of the balance sheet date (or prior to issuance of the financial statements) as to a probable or reasonably possible loss incurred by an entity that will ultimately be resolved when one or more future events occur or fail to occur, and typically discloses the amount of loss recorded or a range of possible loss, or an assertion that no reasonable estimate can be made.

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