XML 47 R36.htm IDEA: XBRL DOCUMENT v3.19.1

REVENUE RECOGNITION - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 163,664	$ 147,455
Transferred at a point-in-time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	6,736	8,173
Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	156,928	139,282
Collection
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	83,562	67,007
Landfill
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	19,185	20,500
Transfer
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	14,261	13,166
Customer solutions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,154	15,170
Recycling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	11,207	11,105
Organics
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	13,596	12,200
Transportation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,563	6,508
Landfill gas-to-energy
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	1,136	1,799
Eastern
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	46,997	44,505
Eastern | Transferred at a point-in-time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	36	191
Eastern | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	46,961	44,314
Eastern | Collection
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	33,965	30,523
Eastern | Landfill
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	3,717	5,960
Eastern | Transfer
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	8,986	7,560
Eastern | Customer solutions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Eastern | Recycling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Eastern | Organics
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Eastern | Transportation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Eastern | Landfill gas-to-energy
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	329	462
Western
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	73,634	64,739
Western | Transferred at a point-in-time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	309	368
Western | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	73,325	64,371
Western | Collection
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	49,597	36,484
Western | Landfill
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	15,468	14,540
Western | Transfer
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	5,275	5,606
Western | Customer solutions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Western | Recycling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	441	948
Western | Organics
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Western | Transportation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	2,046	5,824
Western | Landfill gas-to-energy
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	807	1,337
Recycling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	10,766	10,157
Recycling | Transferred at a point-in-time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	6,124	7,257
Recycling | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	4,642	2,900
Recycling | Collection
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Recycling | Landfill
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Recycling | Transfer
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Recycling | Customer solutions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Recycling | Recycling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	10,766	10,157
Recycling | Organics
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Recycling | Transportation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Recycling | Landfill gas-to-energy
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Other
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	32,267	28,054
Other | Transferred at a point-in-time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	267	357
Other | Transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	32,000	27,697
Other | Collection
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Other | Landfill
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Other | Transfer
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Other | Customer solutions
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	18,154	15,170
Other | Recycling
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	0	0
Other | Organics
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	13,596	12,200
Other | Transportation
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	517	684
Other | Landfill gas-to-energy
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 0	$ 0

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

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

+ Details

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

X

- Details

Name:	us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

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

X

- Details

Name:	us-gaap_ProductOrServiceAxis=cwst_TransferMember
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_RecyclingRevenuesMember
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_TransportationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cwst_EasternRegionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cwst_WesternRegionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: