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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events International Subsidiary Restructuring In January 2022, we completed the restructuring of certain subsidiary legal entities within Europe. As a result of the restructuring, we expect to recognize an income tax benefit of approximately $3 million in the first quarter of 2022 as the undistributed earnings for an international subsidiary will no longer be subject to certain taxes upon future distribution. Strategic Review Actions With ongoing support from outside financial and other advisors, we have continuously reviewed our portfolio during the oil and natural gas cycle of the last couple of years. These reviews have focused on evaluating changes in the outlook for our served markets and customer priorities, while identifying opportunities for value-creating options in our portfolio, as well as placing investment emphasis in markets where we generate strong returns and where we see greater long-term viability and stability. As part of our ongoing review of our portfolio, our management recommended and our Board of Directors approved two actions in February 2022 intended to enhance liquidity available for investment in higher returning businesses. First, in consideration of broader strategic priorities and the timeline and efforts required to further develop the industrial blending business, our management recommended and our Board of Directors approved a plan to exit our Industrial Blending operations. As part of the exit plan, we expect to complete the wind down of the Industrial Blending business by the end of the second quarter 2022 and pursue the sale of the industrial blending and warehouse facility and related equipment located in Conroe, Texas. The Industrial Blending business contributed $9 million of revenues in 2021 and incurred an operating loss of $2 million. As of December 31, 2021, the carrying value of the long-lived assets associated with the Industrial Blending business was $20 million. As a result of the plan to exit and dispose of the assets used in the Industrial Blending business, we may incur pre-tax charges in the range of approximately $4 million to $8 million primarily related to the non-cash impairment of long-lived assets, which we expect to recognize in the first quarter of 2022. Second, our Board of Directors also approved management’s plan to explore strategic options for our U.S. mineral grinding business, which contributed total third-party revenues of $36 million in 2021 yielding approximately break-even operating income and ended the year with $47 million of net capital employed, including approximately $25 million of net working capital.