v2.4.0.8
Document And Entity Information (USD $)
12 Months Ended
Dec. 31, 2013
Feb. 28, 2014
Jun. 28, 2013
Document And Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2013    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus FY    
Trading Symbol GLDD    
Entity Registrant Name Great Lakes Dredge & Dock CORP    
Entity Central Index Key 0001372020    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   59,736,196  
Entity Public Float     $ 435,108,882
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes