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Long-Term Debt - Additional Information (Details) - USD ($) |  |  |  | 1 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jun. 07, 2019 | Feb. 04, 2019 | Jun. 27, 2018 | Aug. 18, 2015 | Sep. 30, 2020 | Jul. 01, 2019
Debt Instrument [Line Items] |  |  |  |  |  |
Credit facility participation fee and fronting fee percentage |  |  |  |  | 0.25% |
London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, interest rate at period end |  |  |  |  | 0.1875% |
Revolving Credit Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  | $ 100,000,000 |  |
Debt Instrument, Maturity Date |  |  | Jun. 27, 2023 | Aug. 18, 2020 |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  | $ 60,000,000 |
Amortization of debt issuance costs |  |  |  |  | $ 266,000 |
Repayments of lines of credit | $ 5,000,000 | $ 5,000,000 |  |  |  |
Debt instrument, term |  |  |  |  | 5 years |
Debt instrument term post extension |  |  |  |  | 5 years |
Minimum [Member] | Base Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 0.00% |
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 1.00% |
Minimum [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  |  |  |  | 0.20% |
Maximum [Member] | Base Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 1.00% |
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 2.00% |
Maximum [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of Credit Facility, Commitment Fee Percentage |  |  |  |  | 0.30% |
Second Amendment [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Amortization of debt issuance costs |  |  |  |  | $ 120,000 |
Revolving Credit Facility [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  |  |  |  | $ 70,000,000

X
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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 http://asc.fasb.org/extlink&oid=118932676&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 http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
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