v3.3.1.900
DEI Info Cover Page Document - USD ($)
12 Months Ended
Dec. 31, 2015
Feb. 08, 2016
Jun. 30, 2015
Entity Information [Abstract]      
Entity Registrant Name ENSIGN GROUP, INC    
Entity Central Index Key 0001125376    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Entity Current Reporting Status Yes    
Document Period End Date Dec. 31, 2015    
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Common Stock, Shares Outstanding   50,721,035  
Entity Public Float     $ 1,211,000,000