XML 60 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document and Entity Information
 9 Months Ended
Jan. 31, 2014
Feb. 14, 2014
Class A Common Stock [Member]
Feb. 14, 2014
Class B Common Stock [Member]
Document Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Jan. 31, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus Q3    
Entity Registrant Name CASELLA WASTE SYSTEMS INC    
Entity Central Index Key 0000911177    
Current Fiscal Year End Date --04-30    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   39,049,818 988,200