XML 13 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information
Apr. 20, 2020
Document And Entity Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0000098222
Document Type 8-K
Document Period End Date Apr. 20, 2020
Entity Registrant Name TIDEWATER INC.
Entity Incorporation, State or Country Code DE
Entity File Number 1-6311
Entity Tax Identification Number 72-0487776
Entity Address, Address Line One 6002 Rogerdale Road
Entity Address Address Line2 Suite 600
Entity Address City Or Town Houston
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77072
City Area Code 713
Local Phone Number 470-5300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock  
Document And Entity Information [Line Items]  
Title of 12(b) Security Common stock, $0.001 par value per share
Trading Symbol TDW
Security Exchange Name NYSE
Warrants to Purchase common stock  
Document And Entity Information [Line Items]  
Title of 12(b) Security Warrants to purchase shares of common stock
Trading Symbol TDW.WS
Security Exchange Name NYSEAMER
Preferred stock purchase rights [Member]  
Document And Entity Information [Line Items]  
Title of 12(b) Security Preferred stock purchase rights
Security Exchange Name NYSE
No Trading Symbol Flag true
Series A Warrants  
Document And Entity Information [Line Items]  
Title of 12(b) Security Series A Warrants to purchase shares of common stock
Trading Symbol TDW.WS.A
Security Exchange Name NYSE
Series B Warrants  
Document And Entity Information [Line Items]  
Title of 12(b) Security Series B Warrants to purchase shares of common stock
Trading Symbol TDW.WS.B
Security Exchange Name NYSE