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Long-Term Debt - Narrative (Details) - USD ($) |  |  | 15 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 01, 2021 | Jul. 31, 2018 | Jun. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2020 | May 01, 2020 | Dec. 23, 2016
Debt Instrument [Line Items] |  |  |  |  |  |  |
Aggregate principal amount of loan |  |  |  | $ 226,700,000 | $ 226,700,000 |  |
Net long-term debt |  |  |  | 224,600,000 | $ 224,400,000 |  |
Revolving credit facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maximum aggregate principal commitment |  |  |  |  |  |  | $ 300,000,000.0
Revolving credit facility | Amended Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Maturity date |  | Jul. 31, 2023 |  |  |  |  |
Maximum aggregate principal commitment |  | $ 350,000,000.0 |  |  |  |  |
Aggregate principal amount of loan |  | 300,000,000.0 |  |  |  |  |
Upfront fees |  | 1,800,000 |  |  |  | $ 1,000,000.0 |
Debt issuance costs |  | $ 300,000 |  |  |  |  |
Net long-term debt |  |  |  | 224,600,000 |  |  |
Scheduled principal payments prior to maturity date |  |  |  | $ 0 |  |  |
Interest rate (percent) |  |  |  | 4.50% |  |  |
Revolving credit facility | Amended Facility | Forecast |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Undrawn fee (percent) |  |  | 0.50% |  |  |  |
LIBOR floor (percent) |  |  | 1.00% |  |  |  |
Revolving credit facility | Amended Facility | Forecast | Minimum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Undrawn fee (percent) | 0.25% |  |  |  |  |  |
Revolving credit facility | Amended Facility | Forecast | Maximum |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Undrawn fee (percent) | 0.45% |  |  |  |  |  |
Revolving credit facility | Amended Facility | LIBOR | Forecast |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on rate (percent) | 2.00% |  | 3.50% |  |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: 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 Reference 3: 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 4: 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 + Details
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