Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.19.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2019
May 10, 2019
Entity Registrant Name Hennessy Capital Acquisition Corp IV  
Entity Central Index Key 0001750153  
Trading Symbol HCAC  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Type 10-Q  
Document Period End Date Mar. 31, 2019  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2019  
Entity Filer Category Non-accelerated Filer  
Entity Ex Transition Period false  
Entity Small Business false  
Entity Emerging Growth Company true  
Class A Common Stock    
Entity Common Stock, Shares Outstanding   30,015,000
Class B Common Stock    
Entity Common Stock, Shares Outstanding   7,503,750