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v3.23.4

Commitments and Contingencies (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 | Jul. 21, 2023 | Mar. 31, 2023 | Dec. 31, 2023 | Sep. 30, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2023
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  | $ 247,558 |  | $ 58,640 | $ 748,965 | $ 489,756 |
Net income |  |  |  | $ 145,644 |  | $ 30,997 | $ 477,750 | $ 340,213 |
Basic (in dollars per share) |  |  |  | $ 1.11 |  | $ 0.23 | $ 3.63 | $ 2.55 |
Diluted (in dollars per share) |  |  |  | $ 1.11 |  | $ 0.23 | $ 3.62 | $ 2.54 |
Claimed Indirect Costs |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Decrease in reserve |  |  |  |  | $ 18,300 |  |  |  |
Claimed Indirect Costs | Revision of Prior Period, Adjustment |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Operating income (loss) |  |  |  |  |  |  | $ 18,300 |  |
Net income |  |  |  |  |  |  | $ 13,500 |  |
Basic (in dollars per share) |  |  |  |  |  |  | $ 0.10 |  |
Diluted (in dollars per share) |  |  |  |  |  |  | $ 0.10 |  |
U.S. Department of Justice |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  | $ 350,000 |  |  |  |  |  | $ 377,500
U.S. Department of Justice | Minimum |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  |  |  |  |  |  |  | 350,000
U.S. Department of Justice | Maximum |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Estimate of possible loss |  |  |  |  |  |  |  |  | $ 378,000
Unfavorable Regulatory Action | Claimed Indirect Costs |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Liability for reductions and/or penalties from U.S Government audits | $ 339,900 |  | 326,700 | $ 339,900 |  |  | $ 339,900 |  |
Unfavorable Regulatory Action | U.S. Department of Justice |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Amount awarded to other party |  | $ 377,500 |  |  |  |  |  |  |
Contracts with U.S. Government Agencies or Other U.S. Government Contractors | Revenue Benchmark | Total U.S. government |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Concentration risk (as a percent) |  |  |  | 98.00% |  | 97.00% | 98.00% | 97.00% |
Financial Standby Letter of Credit |  |  |  |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |
Guarantor obligations, carrying value | 4,500 |  | 6,100 | $ 4,500 |  |  | $ 4,500 |  |
Guarantor obligations, reduction to available borrowings | 1,400 |  | 1,300 |  |  |  |  |  |
Guarantor obligations, facility | 7,500 |  | 7,500 | 7,500 |  |  | 7,500 |  |
Guarantor obligations, available amount | $ 4,400 |  | $ 2,700 | $ 4,400 |  |  | $ 4,400 |  |

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