Borrowings - Cabot Senior Secured Notes - Table and Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior secured notes	$ 292,500	$ 308,750
Debt issued	672,855	672,855
Secured Debt
Debt Instrument [Line Items]
Senior secured notes	1,078,965	1,129,039
Floating rate senior secured notes due 2024 \| Secured Debt
Debt Instrument [Line Items]
Senior secured notes	441,336	448,921
Senior secured notes due 2023 \| Secured Debt
Debt Instrument [Line Items]
Senior secured notes	$ 637,629	$ 680,118
Stated interest rate (as a percent)	7.50%
Euro Interbank Offered Rate (EURIBOR) \| Floating rate senior secured notes due 2024 \| Secured Debt
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	6.375%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- 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.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16(a))
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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