XML 66 R55.htm IDEA: XBRL DOCUMENT v3.5.0.2

SEGMENT REPORTING - Summary of Revenues Attributable to Services Provided by Company (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue from External Customer [Line Items]
Revenues	$ 151,133	$ 146,185	$ 421,236	$ 406,476
Collection
Revenue from External Customer [Line Items]
Revenues	65,581	63,588	187,117	177,550
Disposal
Revenue from External Customer [Line Items]
Revenues	43,412	43,168	115,050	114,999
Power generation
Revenue from External Customer [Line Items]
Revenues	1,610	1,694	4,777	5,305
Processing
Revenue from External Customer [Line Items]
Revenues	1,974	1,866	4,694	4,652
Solid waste operations
Revenue from External Customer [Line Items]
Revenues	112,577	110,316	311,638	302,506
Organics
Revenue from External Customer [Line Items]
Revenues	10,266	9,753	31,372	29,619
Customer solutions
Revenue from External Customer [Line Items]
Revenues	13,878	13,416	40,361	39,895
Recycling
Revenue from External Customer [Line Items]
Revenues	$ 14,412	$ 12,700	$ 37,865	$ 34,456

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_SolidWasteOperationsCollectionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_SolidWasteOperationsDisposalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_SolidWasteOperationsPowerGenerationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_SolidWasteOperationsProcessingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_SolidWasteOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_OrganicsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_CustomerSolutionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_RecyclingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: