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Borrowings (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 01, 2022 | Jun. 30, 2022 | Feb. 28, 2017
Borrowings |  |  |  |  |  |  |  |
Borrowings outstanding |  | $ 215,000,000 |  | $ 215,000,000 |  |  | $ 60,000,000 |
Contractual interest expense |  |  |  | $ 500,000 |  |  |  |
Revolving credit facility |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 600,000,000 |  |  |  |  |  |  |
Credit facility under term loan | 150,000,000 |  |  |  |  |  |  |
Unused commitment fee (as a percent) |  |  |  | 0.15% |  |  |  |
Borrowings outstanding |  | 215,000,000 |  | $ 215,000,000 |  |  |  |
Available credit facility |  | 323,700,000 |  | $ 323,700,000 |  |  |  |
Revolving credit facility | Minimum |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Maximum borrowing capacity | 535,000,000 |  |  |  |  |  |  |
Unused commitment fee (as a percent) |  |  |  | 0.10% |  |  |  |
Revolving credit facility | Maximum |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Maximum borrowing capacity | $ 750,000,000 |  |  |  |  |  |  |
Increase in the credit agreement's borrowing capacity available under certain circumstances |  |  | $ 250,000,000 |  | $ 250,000,000 |  |  |
Unused commitment fee (as a percent) |  |  |  | 0.25% |  |  |  |
Revolving credit facility | LIBOR |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Interest rate margin (as a percent) |  |  |  | 1.25% |  |  |  |
Revolving credit facility | LIBOR | Minimum |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Interest rate margin (as a percent) |  |  |  | 1.00% |  |  |  |
Revolving credit facility | LIBOR | Maximum |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Interest rate margin (as a percent) |  |  |  | 1.75% |  |  |  |
Letters of credit sub facility |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | 300,000,000 |  | 300,000,000 |  |  |
Amount outstanding under letters of credit |  | 61,300,000 |  | $ 61,300,000 |  |  |  |
Term Loan |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Borrowings outstanding |  | $ 145,000,000 |  | $ 145,000,000 |  |  |  |
1.25% Convertible Senior Notes Due 2022 |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  |  | $ 287,500,000
Interest rate (as a percentage) |  | 1.25% |  | 1.25% |  |  |  |
Principal value of notes repurchased and cancelled |  |  |  |  |  | $ 242,300,000 |  |
Debt issuance costs |  | $ 7,700,000 |  | $ 7,700,000 |  |  |  |
Debt component of debt issuance costs |  | 6,500,000 |  | 6,500,000 |  |  |  |
Equity component of debt issuance costs |  | 1,200,000 |  | 1,200,000 |  |  |  |
Total interest expense |  | 0 | 1,200,000 | 700,000 | 3,700,000 |  |  |
Contractual interest expense |  |  | 900,000 | 500,000 | 2,700,000 |  |  |
Amortization of debt issuance costs |  |  | $ 300,000 | 200,000 | $ 1,000,000.0 |  |  |
Bank lines-of-credit |  |  |  |  |  |  |  |
Borrowings |  |  |  |  |  |  |  |
Amount outstanding under letters of credit |  | 50,100,000 |  | 50,100,000 |  |  |  |
Available credit facility |  | $ 27,700,000 |  | $ 27,700,000 |  |  |  |

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- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
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- Definition Carrying amount of debt component of the debt issuance costs. + References No definition available. + Details
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- Definition Carrying amount of equity component of the debt issuance costs. + References No definition available. + Details
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- Definition The available increase in borrowing capacity of the debt instrument under certain circumstances. + References No definition available. + Details
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- Definition This element represents for line of credit facility term loan borrowing capacity. + References No definition available. + Details
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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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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. + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: 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(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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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. + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69F -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69E -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 + Details
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69E -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69F -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph 8 -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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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 https://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 https://asc.fasb.org/extlink&oid=126897435&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 https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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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. + 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 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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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. + Details
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