XML 69 R54.htm IDEA: XBRL DOCUMENT
v3.20.2

Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - Estimate of Fair Value Measurement [Member] - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Sep. 30, 2020 | Sep. 30, 2019
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | $ 114,147 | $ 72,873
Money market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 43,322 | 37,794
Notes receivable |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 32,793 | 35,079
Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 33,119 |
Municipal bonds, and other |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 4,913 |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 81,354 | 37,794
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 43,322 | 37,794
Quoted Prices in Active Markets for Identical Assets (Level 1) | Notes receivable |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 33,119 |
Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal bonds, and other |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 4,913 |
Significant Other Observable Inputs (Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 | 0
Significant Other Observable Inputs (Level 2) | Money market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 | 0
Significant Other Observable Inputs (Level 2) | Notes receivable |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 | 0
Significant Other Observable Inputs (Level 2) | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 |
Significant Other Observable Inputs (Level 2) | Municipal bonds, and other |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 |
Significant Unobservable Inputs (Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 32,793 | 35,079
Significant Unobservable Inputs (Level 3) | Money market funds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 | 0
Significant Unobservable Inputs (Level 3) | Notes receivable |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 32,793 | $ 35,079
Significant Unobservable Inputs (Level 3) | Corporate bonds |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | 0 |
Significant Unobservable Inputs (Level 3) | Municipal bonds, and other |  |
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Total assets at fair value on a recurring basis | $ 0 |

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_NotesReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |