Class Of Warrant Or Right, Exercise Price Of Warrants Or Rights, Premium Percentage

No definition available.

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- Definition

Credit Facility, Daily Minimum Sum of Cash and Cash Equivalents and Aggregate Unused Commitments to Prevent Maturity Prior to Stated Maturity

+ References

No definition available.

+ Details

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- Definition

Credit Facility, Maturity Period Prior to Stated Maturity If Liquidity Threshold Not Met

+ References

No definition available.

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- Definition

Debt Instrument, Convertible, Conversion Price, Percentage Of Principal Amount Plus Accrued And Unpaid Contingent Interest

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Convertible, If-Converted Value

+ References

No definition available.

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- Definition

Debt Instrument, Convertible, Threshold Business Days

+ References

No definition available.

+ Details

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- Definition

Line of Credit, Number of Financial Ratios

+ References

No definition available.

+ Details

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- Definition

Long-term Debt, Remaining Term

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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- Definition

The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

+ Details

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- Definition

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

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- Definition

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

+ References

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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

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The effective interest rate at the end of the reporting period.

+ References

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- Definition

The effective interest rate during the reporting period.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

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- Definition

The cash outflow for derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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Debt - Narrative (Details)		1 Months Ended		3 Months Ended			9 Months Ended
Debt - Narrative (Details)	Aug. 24, 2020 USD ($) financial_ratio	Oct. 31, 2020 USD ($)	Apr. 30, 2018 USD ($) day shares $ / shares	Jan. 31, 2021 financial_ratio	Nov. 01, 2020 USD ($) $ / shares	Oct. 31, 2019 USD ($)	Nov. 01, 2020 USD ($) $ / shares	Oct. 31, 2019 USD ($)	Jul. 31, 2018 $ / shares	Apr. 04, 2018
Debt Instrument [Line Items]
Proceeds from borrowings, net of issuance costs							$ 251,892,000	$ 0
Debt issuance costs, net of amortization			$ 12,900,000
Closing price of stock (in dollars per share) \| $ / shares					$ 16.10		$ 16.10
Revolving Credit Facility
Debt Instrument [Line Items]
Term of credit facility	5 years
Senior secured revolving credit facility maximum capacity	$ 300,000,000.0
Credit facility maturity period prior to stated maturity if out of compliance with liquidity threshold	91 days
Credit facility, daily minimum sum of cash and cash equivalents and aggregate unused commitments to prevent maturity prior to stated maturity		$ 625,000,000.0
Credit facility, amount borrowed					$ 250,000,000.0		$ 250,000,000.0
Interest expense					$ 300,000
Number of financial ratios \| financial_ratio	2
Revolving Credit Facility \| Forecast
Debt Instrument [Line Items]
Number of financial ratios \| financial_ratio				2
Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Commitment Fee (percent)	0.25%
Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Commitment Fee (percent)	0.40%
Revolving Credit Facility \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest during the period (percent)					1.65%
Revolving Credit Facility \| London Interbank Offered Rate (LIBOR) \| Interest Rate Floor
Debt Instrument [Line Items]
Effective interest rate (percent)	0.00%
Revolving Credit Facility \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Margin rate (percent)	1.50%
Revolving Credit Facility \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Margin rate (percent)	2.25%
Revolving Credit Facility \| Base Rate \| Minimum
Debt Instrument [Line Items]
Margin rate (percent)	0.50%
Revolving Credit Facility \| Base Rate \| Maximum
Debt Instrument [Line Items]
Margin rate (percent)	1.25%
Capped Call
Debt Instrument [Line Items]
Payment for purchase of capped calls			64,600,000
Convertible Senior Notes
Debt Instrument [Line Items]
Debt issuance costs, net of amortization			9,800,000		$ 5,170,000	$ 6,615,000	$ 5,170,000	6,615,000
Additional Paid-in Capital
Debt Instrument [Line Items]
Debt issuance costs, net of amortization			3,068,000
Class A
Debt Instrument [Line Items]
Conversion price (in dollars per share) \| $ / shares									$ 26.27
Closing price of stock (in dollars per share) \| $ / shares					$ 16.10		$ 16.10
Class A \| Capped Call
Debt Instrument [Line Items]
Exercise price (in dollars per share) \| $ / shares									$ 39.66
Exercise price premium percentage over last reported sales price										100.00%
Convertible Senior Notes
Debt Instrument [Line Items]
Principal amount			$ 575,000,000.0
Interest rate (as a percent)			0.125%
Proceeds from borrowings, net of issuance costs			$ 562,100,000
Conversion percentage of principal amount plus accrued and unpaid contingent interest			100.00%
Convertible debt, fair value based on the closing trading price per $100 of the Notes					$ 564,600,000		$ 564,600,000
If-converted value					352,300,000		$ 352,300,000
Remaining term of the notes							29 months
Interest expense					$ 7,471,000	$ 7,077,000	$ 21,954,000	$ 20,725,000
Convertible Senior Notes \| Class A
Debt Instrument [Line Items]
Number of convertible shares at initial conversion rate (in shares) \| shares			21,884,155
Conversion ratio (in shares)			38.0594
Conversion price (in dollars per share) \| $ / shares			$ 26.27
Redemption percentage of principal amount of Notes to be redeemed			100.00%
Convertible Senior Notes \| Class A \| Any Fiscal Quarter Commencing After the Fiscal Quarter Ending on July 31, 2018
Debt Instrument [Line Items]
Threshold trading days \| day			20
Threshold consecutive trading days \| day			30
Threshold percentage of stock price trigger			130.00%
Convertible Senior Notes \| Class A \| Five Business Day Period After any Five Consecutive Trading Day Period
Debt Instrument [Line Items]
Threshold consecutive trading days \| day			5
Threshold percentage of stock price trigger			98.00%
Threshold business days \| day			5
Convertible Senior Notes \| Class A \| Immediately Preceding the Date on Which We Provide Notice of Redemption
Debt Instrument [Line Items]
Threshold trading days \| day			2