Annual report pursuant to Section 13 and 15(d)


Cover - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Mar. 31, 2021
Jun. 30, 2020
Cover [Abstract]      
Document Type 10-K/A    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2020    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2020    
Current Fiscal Year End Date --12-31    
Entity File Number 001-34767    
Entity Registrant Name CLARUS CORPORATION    
Entity Central Index Key 0000913277    
Entity Tax Identification Number 58-1972600    
Entity Incorporation, State or Country Code DE    
Entity Address, Address Line One 2084 East 3900 South    
Entity Address, City or Town Salt Lake City    
Entity Address, State or Province UT    
Entity Address, Postal Zip Code 84124    
City Area Code 801    
Local Phone Number 278-5552    
Title of 12(b) Security Common Stock, par value $.0001 per share    
Trading Symbol CLAR    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 266.4
Entity Common Stock, Shares Outstanding   31,314,181  
ICFR Auditor Attestation Flag true