XML 100 R74.htm IDEA: XBRL DOCUMENT v2.4.0.6

Long-Term Debt and Capital Leases - Schedule of Future Maturities of Debt (Detail) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013
Schedule Of Interest Expenses [Line Items]
2014	$ 857
2015	328
2016	123,410
2017	28
2018
Thereafter	369,765
Total	$ 494,388

X

- Definition

Amount of long-term debt and capital lease redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalAfterYearFive
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt and capital lease redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt and capital lease redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt and capital lease redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt and capital lease redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of long-term debt and capital lease redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Total obligation related to long-term debt (excluding convertible debt) and capital leases.

+ References

No definition available.

+ Details

Name:	cwst_LongTermDebtAndCapitalLeaseObligation
Namespace Prefix:	cwst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	cwst_ScheduleOfInterestExpensesLineItems
Namespace Prefix:	cwst_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration