Quarterly report pursuant to sections 13 or 15(d)

Document And Entity Information

v2.4.0.6
Document And Entity Information
9 Months Ended
Sep. 30, 2012
Oct. 26, 2012
Document Information [Line Items]    
Document Type 10-Q  
Document Period End Date Sep. 30, 2012  
Amendment Flag false  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q3  
Entity Registrant Name SEACOR HOLDINGS INC /NEW/  
Entity Central Index Key 0000859598  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   20,852,851