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Debt and Financing Lease Liabilities - Additional Information (Details) |  |  |  | 1 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 27, 2021 USD ($) | Jun. 22, 2021 USD ($) bank | Jun. 21, 2021 USD ($) | Oct. 31, 2020 USD ($) | Jun. 30, 2021 USD ($) project | Oct. 01, 2020 USD ($) | Sep. 30, 2020 USD ($) | Jul. 31, 2020 USD ($) | Jun. 30, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Total funded debt to EBITDA covenant ratio, maximum |  | 3.50 | 3.25 |  |  |  |  |  |
Eurocurrency Rate |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis spread on variable rate |  | 0.00% | 1.00% |  |  |  |  |  |
Term Loan | July 2021 Term Loan | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Original principal amount | $ 44,748,000 |  |  |  |  |  |  |  |
Debt instrument option to increase amount | 60,000,000 |  |  |  |  |  |  |  |
Fixed Rate Term Loan | July 2021 Term Loan | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Original principal amount | $ 40,683,000 |  |  |  |  |  |  |  |
Debt instrument term | 25 years |  |  |  |  |  |  |  |
Fixed interest rate, percentage | 3.25% |  |  |  |  |  |  |  |
Floating Rate Term Loan | July 2021 Term Loan | Subsequent Event |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Original principal amount | $ 4,065,000 |  |  |  |  |  |  |  |
Debt instrument term | 9 years |  |  |  |  |  |  |  |
Revolving Credit Facility | Line of Credit |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, number of banks | bank |  | 3 |  |  |  |  |  |  |
Line of credit facility, additional borrowing capacity |  | $ 65,000,000 |  |  |  |  |  |  |
Maximum borrowing capacity |  |  | $ 115,000,000 |  |  |  |  |  |
Current borrowing capacity |  | $ 180,000,000 |  |  |  |  |  |  |
Unamortized discount |  |  |  |  | $ 78,000 |  |  |  |
Funds available for borrowing |  |  |  |  | 141,241,000 |  |  |  |
Revolving Credit Facility | Line of Credit | October 2020 Term Loan Modification |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Line of credit facility, additional borrowing capacity |  |  |  | $ 15,000,000 | 15,000,000 |  |  |  |
Maximum borrowing capacity |  |  |  | $ 50,000,000 |  | $ 35,000,000 | $ 28,500,000 |  |
Unamortized discount |  |  |  |  | 150,000 |  |  |  |
Debt instrument, fee amount |  |  |  |  | 2,000 |  |  |  |
Net proceeds |  |  |  |  | 14,848,000 |  |  |  |
Principal amount |  |  |  |  | 1,250,000 |  |  |  |
Line of credit |  |  |  |  | 46,988,000 |  |  |  |
Revolving Credit Facility | Line of Credit | June 2020 Construction Revolver |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  | $ 100,000,000
Line of credit |  |  |  |  | 33,977,000 |  |  |  |
Closed funding for additional projects |  |  |  |  | $ 14,013,000 |  |  |  |
Number of additional project | project |  |  |  |  | 4 |  |  |  |
Borrowing capacity Increase limit |  |  |  |  | $ 5,117,000 |  |  |  |
Funds available for borrowing |  |  |  |  | $ 65,693,000 |  |  |  |
Revolving Credit Facility | Line of Credit | July 2020 Construction Revolver |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Funds available for borrowing |  |  |  |  |  |  |  | $ 24,145,000 |

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