Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss attributable to U.S. Silica Holdings, Inc.	$ (72,345)	$ (19,324)
Denominator:
Weighted average shares outstanding (in shares)	73,467	73,040
Diluted effect of stock awards (shares)	0	0
Weighted average shares outstanding assuming dilution (shares)	73,467	73,040
Loss per share attributable to U.S. Silica Holdings, Inc.:
Basic loss per share (in dollars per share)	$ (0.98)	$ (0.26)
Diluted loss per share (in dollars per share)	$ (0.98)	$ (0.26)