Discontinued Operations and Other Dispositions - Summary of Operating Results from Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net Earnings (Loss) from Discontinued Operations	$ 5,278	$ (160,297)
Discontinued Operations, Disposed of by Sale | Oil and Gas Proppants [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenue	1,045	46,781
Cost of Goods Sold	3,415	58,185
Gross Profit	(2,370)	(11,404)
Other Non-Operating Income	226	569
Gain on Sale of Discontinued Operations	9,230
Impairment Losses		(199,136)
Earnings (Loss) from Discontinued Operations	7,086	(209,971)
Income Tax (Expense) Benefit	(1,808)	49,674
Net Earnings (Loss) from Discontinued Operations	$ 5,278	$ (160,297)