Income Taxes - Additional Information (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 22, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 15, 2017
Income Taxes [Line Items]
Statutory tax rate			35.00%
Net operating loss carryforward			$ 99.4
Net operating loss carryforward written off				$ 141.7
Operating loss carryforwards annual installment amount	$ 1.0
Depletion carryover amount	$ 8.7
Income tax benefit			6.3
AMT credit carryovers			$ 2.4
AMT expected to refund Year			2022
Maximum percentage of deductible interest expense for tax of earnings before interest, taxes, depreciation, and amortization			30.00%
Maximum percentage of deductible interest expense for tax of earnings before interest and taxes			30.00%
Beginning date for deductible interest expense for tax of earnings before interest, taxes, depreciation, and amortization			Jan. 01, 2018
Ending year for deductible interest expense for tax of earnings before interest, taxes depreciation, and amortization			2021
Deductibility of interest expense for tax amortization period			4 years
Beginning date for deductible interest expense for tax of earnings before interest taxes			Jan. 01, 2022
Scenario Plan
Income Taxes [Line Items]
Statutory tax rate		21.00%
Amended and Restated Purchase Agreement | Chambers
Income Taxes [Line Items]
Additional estimated annual utilization limit of net operating losses					$ 0.8
Net operating loss carryforwards limitations on use description			The 2017 change creates an additional estimated annual utilization limit of approximately $0.8 million on our ability to utilize net operating losses generated subsequent to the 2016 change in ownership, but prior to the June, 2017 change in ownership.
Common Class A
Income Taxes [Line Items]
Sale of common stock, net of offering costs (in shares)	13,800,000			13,800,000
Series A-1 Convertible Participating Preferred Stock
Income Taxes [Line Items]
Preferred stock, shares issued			83,968	0
Series A-1 Convertible Participating Preferred Stock | Amended and Restated Purchase Agreement | Chambers
Income Taxes [Line Items]
Preferred stock, shares issued					5,400
Series A-2 Convertible Participating Preferred Stock | Amended and Restated Purchase Agreement | Chambers
Income Taxes [Line Items]
Preferred stock, shares issued					74,600