Fair Value Measurements and Financial Instruments (Details) - USD ($) $ in Thousands		3 Months Ended	6 Months Ended		12 Months Ended
	Jan. 01, 2020	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents measured at fair value		$ 108,300	$ 108,300		$ 86,900
Cash balances on deposit with financial institutions		124,504	$ 124,504		112,690
Customer payment terms			45 days
Allowance for uncollectible accounts		2,930	$ 2,930		1,053
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for uncollectible accounts		2,930	$ 2,930		1,053
Accounting Standards Update [Extensible List]			us-gaap:AccountingStandardsUpdate201613Member
Bad Debt Expense [Abstract]
Current period provision	$ 2,500		$ 4,678
Amounts written off, net of recoveries			(2,801)
Liberty Resources LLC | Hydraulic Fracturing Services | Affiliated Entity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Due from related parties		0	$ 0		2,500
Oil And Gas Exploration Entity Filing For Bankruptcy
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allowance for uncollectible accounts					1,100
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for uncollectible accounts					$ 1,100
Bad Debt Expense [Abstract]
Current period provision		$ 2,200
Customer Concentration Risk | Customer A, B And C | Accounts Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Concentration risk, percentage			60.00%		60.00%
Customer Concentration Risk | Customer E | Accounts Receivable
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Concentration risk, percentage			12.00%		12.00%
Customer Concentration Risk | Customer A, B, C And D | Total Revenue
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Concentration risk, percentage		53.00%
Customer Concentration Risk | Customer A | Total Revenue
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Concentration risk, percentage			15.00%	15.00%
Customer Concentration Risk | Customer F | Total Revenue
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Concentration risk, percentage			10.00%	10.00%