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v3.20.4

Long-Term Debt, Net - Additional Information (Detail) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2020 USD ($) | Apr. 30, 2020 USD ($) TradingDay $ / shares shares | Mar. 31, 2020 USD ($) | Jan. 31, 2019 USD ($) | Jan. 30, 2021 USD ($) $ / shares
Line Of Credit Facility [Line Items] |  |  |  |  |
Repayments of lines of credit |  |  |  |  | $ 330,000,000
Total interest expense for period |  |  |  |  | 2,500,000
Revolving Credit Facility |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Outstanding borrowings |  |  |  |  | $ 0
Proceeds from line of credit |  |  | $ 330,000,000.0 |  |
Repayments of lines of credit | $ 330,000,000.0 |  |  |  |
Weighted average interest rate |  |  |  |  | 1.66%
Credit Agreement | Credit Facilities |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Line of credit facility, expiration period |  |  |  | 5 years |
Loans and letters of credit maximum borrowing capacity |  |  |  | $ 400,000,000 |
Credit Agreement | Stand-by Letters of Credit |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Letters of credit outstanding amount |  |  |  |  | $ 7,900,000
Credit Agreement | Credit Agreement Loans |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Outstanding borrowings |  |  |  |  | $ 0
Convertible Senior Notes Due 2025 |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Aggregate principal amount of debt issued |  | $ 415,000,000 |  |  |
Debt instrument, stated interest rate |  | 3.75% |  |  |
Debt instrument, maturity year |  | 2025 |  |  |
Debt instrument, interest terms |  | The Notes have a stated interest rate of 3.75%, payable semi-annually. |  |  |
Debt instrument, frequency of periodic payment of interest |  | payable semi-annually |  |  |
Debt instrument, redemption period beginning month and year |  | 2023-04 |  |  |
Debt instrument, redemption earliest date |  | Apr. 17, 2023 |  |  |
Debt instrument, redemption, scheduled trading day immediately preceding maturity date | TradingDay |  | 40 |  |  |
Debt instrument, redemption percentage of common stock price to conversion price |  | 130.00% |  |  |
Debt instrument, redemption, effect for trading days | TradingDay |  | 20 |  |  |
Debt instrument, redemption, consecutive trading day period | TradingDay |  | 30 |  |  |
Debt instrument, conversion period beginning month and year |  | 2025-01 |  |  |
Debt conversion, original debt, principal amount converted |  | $ 1,000 |  |  |
Debt instrument, conversion price per share | $ / shares |  | $ 8.69 |  |  | $ 8.69
Debt instrument, effective interest rate |  | 10.00% |  |  |
Debt instrument, remaining amortization period of discount |  |  |  |  | 4 years 3 months
Convertible Senior Notes Due 2025 | Common Stock |  |  |  |  |
Line Of Credit Facility [Line Items] |  |  |  |  |
Debt conversion, converted instruments, shares issued | shares |  | 115.1 |  |  |

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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. + 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 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: 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)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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