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Related Party Transactions (Details) - USD ($)			3 Months Ended			12 Months Ended
Related Party Transactions (Details) - USD ($)	Jun. 24, 2019	Jan. 11, 2018	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2019
Related Party Transaction [Line Items]
Taxes payable			$ 48,300,000			$ 50,300,000
Payables to related parties			2,998,000			1,329,000
Payable pursuant to tax receivable agreements, related parties			20,601,000			23,797,000
Revenue from related parties			0	$ 6,317,000
Interest income, related party			187,000	0
Prepaid expense and other current assets			38,201,000			34,827,000
Cost of goods sold			392,716,000	429,299,000
Liberty Resources LLC \| Affiliated Entity \| Hydraulic Fracturing Services
Related Party Transaction [Line Items]
Revenue from related parties			0.0	6,300,000
Accounts receivable, related parties			1,400,000			7,100,000
Note receivable—related party, less current portion	$ 15,600,000
Due from related parties			0			2,500,000
Receivable with imputed interest, effective yield (interest rate)	13.00%
Interest income, related party			200,000
Accrued interest receivable, related party			0			0
Riverstone \| Affiliated Entity \| Service Fees
Related Party Transaction [Line Items]
Accrued liabilities—related party		$ 2,000,000.0				2,300,000
Expenses from transactions with related party			0	0
Interest and settlement expense					$ 300,000
Proppant Express Investments, LLC \| Affiliated Entity \| Administrative Support and Purchase and Lease Proppant Logistics Equipment
Related Party Transaction [Line Items]
Leases from related party			2,600,000	2,400,000
Due to related parties			$ 900,000			800,000
R/C IV Non-U.S. LOS Corp \| Tax Receivable Agreement \| Affiliated Entity
Related Party Transaction [Line Items]
Taxes payable		$ 2,900,000
Shares of Class B Common Stock \| R/C IV Non-U.S. LOS Corp \| Tax Receivable Agreement \| Affiliated Entity
Related Party Transaction [Line Items]
Taxes payable						$ 22,300,000
Stock redeemed (in shares)						9,605,786
Shares of Class B Common Stock \| Common Stock \| Tax Receivable Agreement
Related Party Transaction [Line Items]
Taxes payable				$ 5,100,000
IPO \| Shares of Class A Common Stock \| Common Stock \| Riverstone \| Affiliated Entity \| Service Fees
Related Party Transaction [Line Items]
Number of shares issued (shares)		117,647