XML 80 R59.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

REVENUE RECOGNITION (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | $ 743,290 | $ 660,660 | $ 599,309
Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 219,475 | 206,473 |
Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 343,399 | 286,262 |
Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 42,820 | 42,191 |
Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 137,596 | 125,734 |
Collection |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 377,839 | 306,939 |
Collection | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 154,805 | 136,661 |
Collection | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 223,034 | 170,278 |
Collection | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Collection | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Landfill |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 93,019 | 94,986 |
Landfill | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 19,362 | 28,419 |
Landfill | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 73,657 | 66,567 |
Landfill | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Landfill | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Transfer |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 76,138 | 67,583 |
Transfer | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 44,413 | 39,991 |
Transfer | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 31,725 | 27,592 |
Transfer | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Transfer | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Customer solutions |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 79,457 | 67,464 |
Customer solutions | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Customer solutions | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Customer solutions | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Customer solutions | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 79,457 | 67,464 |
Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 44,311 | 46,019 |
Recycling | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 5 | 5 |
Recycling | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 1,486 | 3,823 |
Recycling | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 42,820 | 42,191 |
Recycling | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Organics |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 56,326 | 54,174 |
Organics | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Organics | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Organics | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Organics | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 56,326 | 54,174 |
Transportation |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 12,624 | 18,366 |
Transportation | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Transportation | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 10,811 | 14,270 |
Transportation | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Transportation | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 1,813 | 4,096 |
Landfill gas-to-energy |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 3,576 | 5,129 |
Landfill gas-to-energy | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 890 | 1,397 |
Landfill gas-to-energy | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 2,686 | 3,732 |
Landfill gas-to-energy | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Landfill gas-to-energy | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 0 | 0 |
Transferred at a point-in-time |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 24,286 | 32,974 |
Transferred at a point-in-time | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 159 | 648 |
Transferred at a point-in-time | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 921 | 1,145 |
Transferred at a point-in-time | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 19,738 | 27,260 |
Transferred at a point-in-time | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 3,468 | 3,921 |
Transferred over time |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 719,004 | 627,686 |
Transferred over time | Eastern |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 219,316 | 205,825 |
Transferred over time | Western |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 342,478 | 285,117 |
Transferred over time | Recycling |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | 23,082 | 14,931 |
Transferred over time | Other |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |
Total revenues | $ 134,128 | $ 121,813 |

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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

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: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_CollectionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_LandfillRevenueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_TransferMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_CustomerSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_RecyclingRevenuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_OrganicsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_TransportationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=cwst_LandfillGasToEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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: |