Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Details)

v3.19.1
Stockholders' Equity - Additional Information (Details)
$ in Thousands, € in Millions, £ in Millions
Mar. 15, 2019
USD ($)
shares
Mar. 15, 2019
EUR (€)
shares
Jan. 25, 2019
USD ($)
Jan. 25, 2019
GBP (£)
Jan. 09, 2019
USD ($)
Vessel
shares
Mar. 31, 2019
USD ($)
Jan. 01, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Cumulative Effect of New Accounting Principle in Period of Adoption               $ 10,416 $ (12,069)
Common stock value           $ 211   204  
Windcat Workboats Facilities | Seabulk Overseas                  
Business acquisition, percentage of voting interests acquired 6.25% 6.25% 6.25% 6.25%          
Business combination, consideration transferred, total $ 1,400 € 1.2 $ 2,000 £ 1.5          
Business acquisition, exchange for consideration | shares 50,000 50,000              
Ownership percentage     100.00% 100.00%          
Private Placement                  
Stock Issued During Period, Shares, New Issues | shares         603,872        
Number of equipment acquired | Vessel         3        
Common stock value         $ 7,800        
Retained Earnings [Member]                  
Cumulative Effect of New Accounting Principle in Period of Adoption               $ 10,416 $ (12,069)
Retained Earnings [Member] | Accounting Standards Update 2016-02 [Member]                  
Cumulative Effect of New Accounting Principle in Period of Adoption             $ 10,400