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v3.21.1

LEASE - Total leases - Maturities (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
LEASE |  |
2020 | $ 37,080 |
2021 | 9,941 |
2022 | 3,632 |
2023 | 1,242 |
2024 | 369 |
Thereafter | 1,859 |
Total future minimum lease payments | $ 54,123 |
2019 |  | $ 46,392
2020 |  | 26,067
2021 |  | 5,270
2022 |  | 2,541
2023 |  | 1,077
Thereafter |  | 1,504
Total future minimum lease payments |  | $ 82,851

X
- Definition Amount of minimum lease payments for leases. + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDue
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in tweleve months + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDueCurrent
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDueInFiveYears
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDueInFourYears
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDueInThreeYears
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDueInTwoYears
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of minimum lease payments for capital leases due after fifth fiscal year. + References No definition available. + Details
Name: | csiq_LeasesFutureMinimumLeasePaymentsDuethereafter
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDue
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due after Year Five + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDueAfterYearFive
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due Next Twelve Months + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDueNextTwelveMonths
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due Year Five + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDueYearFive
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due Year Four + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDueYearFour
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due Year Three + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDueYearThree
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Lessee, Liability, Payments, Due Year Two + References No definition available. + Details
Name: | csiq_LesseeLiabilityPaymentsDueYearTwo
Namespace Prefix: | csiq_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration