Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Operating Activities
Net Income (Loss)	$ 512,384	$ 89,593	$ (42,758)
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	33,250	35,581	49,635
Impairment of long-lived assets			2,308
Amortization of acquired contract liability	(2,721)	(2,500)	(5,871)
(Gain) loss on sale of assets and businesses	(556,161)	(101,523)	9,294
Curtailments, settlements, withdrawals, and special termination benefits loss, net		14,644	52,005
Loss on modification and extinguishment of debt	1,694	32,613
Other amortization included in interest expense	5,925	6,416	9,047
Provision for credit losses	1,136	1,594	452
Provision for deferred income taxes		14	25
Warrants remeasurement gain	(8,545)	(9,796)
Share-based compensation	9,445	8,913	9,782
Changes in other assets and liabilities, excluding the effects of acquisitions and divestitures:
Trade and other receivables	7,879	(26,433)	2,822
Contract assets	9,584	(9,055)	702
Inventories	(17,460)	(28,187)	25,642
Prepaid expenses and other current assets	(2,919)	1,970	(1,122)
Accounts payable, accrued expenses, and contract liabilities	13,506	(35,733)	(189,412)
Accrued pension and other postretirement benefits	(3,916)	(32,562)	(58,597)
Other, net	6,362	2,200	(970)
Net cash provided by (used in) operating activities	9,443	(52,251)	(137,016)
Investing Activities
Capital expenditures	(21,827)	(20,676)	(19,660)
Proceeds from (payments on) sale of assets and businesses	713,413	(6,220)	224,518
Investment in joint venture	(1,661)	(272)	(2,101)
Purchase of facility related to divested businesses			(21,550)
Net cash provided by (used in) investing activities	689,925	(27,168)	181,207
Financing Activities
Proceeds from issuance of long-term debt	2,000	1,235,000	107
Retirement of debt and finance lease obligations	(608,701)	(1,126,501)	(380,009)
Payment of deferred financing costs	(2,368)	(17,097)	(400)
Proceeds on issuance of common stock, net of issuance costs	79,961	4,090
Premium on redemption of long-term debt	(3,600)	(26,157)	(9,108)
Repurchase of shares for share-based compensation minimum tax obligation	(1,629)	(3,547)	(3,249)
Net cash (used in) provided by financing activities	(534,337)	65,788	(392,659)
Effect of exchange rate changes on cash	77	156	(536)
Net change in cash and cash equivalents	165,108	(13,475)	(349,004)
Cash and cash equivalents at beginning of period	227,403	240,878	589,882
Cash and cash equivalents at end of period	$ 392,511	$ 227,403	$ 240,878