v3.19.3
Cover Page - shares
9 Months Ended
Sep. 30, 2019
Oct. 31, 2019
Cover page.    
Title of 12(b) Security Common Stock, par value $0.001 per share  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Trading Symbol SND  
Entity Registrant Name Smart Sand, Inc.  
Entity Central Index Key 0001529628  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Interactive Data Current Yes  
Document Quarterly Report true  
Entity Current Reporting Status Yes  
Entity Common Stock, Shares Outstanding   41,318,370