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MERGER TRANSACTION (Details)
Jul. 16, 2021
USD ($)
shares
Sep. 30, 2022
item
shares
Dec. 31, 2021
shares
Jul. 15, 2021
USD ($)
Asset Acquisition [Line Items]        
Special dividends that can be paid prior to the effective date under the business combination | $       $ 31,500,000
Asset acquisition special dividends per share costs | $ $ 1.12      
Common stock, shares, issued 50,674,393 49,058,615 49,612,019  
Common stock, shares, outstanding 50,674,393 49,058,615 49,612,019  
Number of joint ventures | item   2    
Diamond S Shareholders        
Asset Acquisition [Line Items]        
Percentage of outstanding shares 44.25%      
Pre Merger International Seaways Shareholders [Member]        
Asset Acquisition [Line Items]        
Percentage of outstanding shares 55.75%      
Diamond S Shipping Inc        
Asset Acquisition [Line Items]        
Asset acquisition conversion ratio of acquiree stock into acquirer stock 0.55375      
Diamond S Shipping Inc | Common Stock [Member]        
Asset Acquisition [Line Items]        
Shares issued in asset acquisition 22,536,647