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Discontinued Operations and Other Dispositions - Summary of Significant Components of Consolidated Statement of Cash Flows for Discontinued Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Depreciation and Amortization $ 100 $ 3,803 $ 221 $ 7,642
Capital Expenditures       65
Discontinued Operations, Disposed of by Sale [Member] | Oil and Gas Proppants [Member]        
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]        
Depreciation and Amortization     221 7,642
Gain on Sale     $ (9,230)  
Net Change in Inventory       1,892
Capital Expenditures       $ 65