Debt Instrument, Covenant, Holders Percentage Of Principal Amount

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- Definition

Debt Instrument, Covenant, Percentage Of Principal And Interest Due

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- Definition

Debt Instrument, Covenant, Purchase Price, Percentage of Principal and Interest

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- Definition

Option Indexed To Issuer's Equity, Transaction Cost

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No definition available.

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- Definition

Option Indexed to Issuer's Equity, Conversion Price

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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- Definition

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

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Number of warrants or rights outstanding.

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

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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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.

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

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from hedging transactions.

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Amount of deferred tax liability attributable to taxable temporary differences from debt issuance costs.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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Convertible Senior Notes and Related Transactions - Narrative (Details) $ / shares in Units, shares in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2019 USD ($) $ / shares shares	Oct. 31, 2020 USD ($) $ / shares shares	Nov. 02, 2019 USD ($)	Oct. 31, 2020 USD ($) $ / shares shares	Nov. 02, 2019 USD ($)	Feb. 01, 2020 USD ($)
Debt Instrument [Line Items]
Amortization of debt discount				$ 7,796,000	$ 5,109,000
Amortization of debt issuance costs				$ 1,017,000	663,000
Option to purchase, number of shares (in shares) \| shares	11.6
Conversion price of convertible senior notes (in dollars per share) \| $ / shares	$ 25.78			$ 25.78
Convertible note hedge cost	$ 61,000,000.0
Warrants outstanding (in shares) \| shares	11.6	11.6		11.6
Strike price of warrants (in dollars per share) \| $ / shares	$ 46.88	$ 46.88		$ 46.88
Proceeds from issuance of warrants	$ 28,100,000			$ 0	28,080,000
Deferred tax liability		$ 11,200,000		11,200,000		$ 11,200,000
Deferred tax asset		12,300,000		12,300,000		12,300,000
Senior Notes \| 2.00% Convertible Senior Notes Due 2024
Debt Instrument [Line Items]
Interest rate	2.00%
Convertible debt issued	$ 300,000,000
Conversion ratio	0.0387879000
Conversion price (in dollars per share) \| $ / shares	$ 25.78
Percentage of principal and interest of the Notes that the Company may be required to purchase in the event of a fundamental change	100.00%
Minimum percentage of holders of the Notes which may be able to declare the Notes to be due and payable upon the occurrence of certain events of default	25.00%
Percentage of principal and interest that may be declared due and payable upon the occurrence of certain events of default	100.00%
Effective interest rate	6.80%
Amortization of debt discount		2,600,000	$ 2,400,000	7,800,000	5,100,000
Amortization of debt issuance costs		200,000	$ 200,000	600,000	$ 400,000
Initial Purchasers \| Senior Notes \| 2.00% Convertible Senior Notes Due 2024
Debt Instrument [Line Items]
Debt issuance costs	$ 3,800,000
Third Party Offerers \| Senior Notes \| 2.00% Convertible Senior Notes Due 2024
Debt Instrument [Line Items]
Debt issuance costs	$ 1,500,000
Level 2 \| Senior Notes \| 2.00% Convertible Senior Notes Due 2024
Debt Instrument [Line Items]
Fair value of convertible senior notes		$ 202,600,000		$ 202,600,000		$ 272,000,000.0