Earnings per Share - Computation of Basic and Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerators:
Net loss attributable to Covia Holdings Corporation	$ (941)	$ (52,245)
Denominator:
Basic weighted average shares outstanding	131,850	131,287
Diluted weighted average shares outstanding	131,850	131,287
Earnings (loss) per share – basic	$ (0.01)	$ (0.40)
Earnings (loss) per share – diluted	$ (0.01)	$ (0.40)