Debt - Additional Information (Details)  | 
3 Months Ended | ||||
|---|---|---|---|---|---|
| 
 Sep. 30, 2019  
USD ($)  
project 
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 Jun. 30, 2019  
USD ($) 
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Jun. 28, 2019  | 
Jun. 27, 2019  | 
 May 31, 2019  
USD ($) 
 | 
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| Debt Instrument [Line Items] | |||||
| Total Funded Debt to EBITDA covenant ratio, maximum | 3 | ||||
| Total Funded Debt to EBITDA covenant ratio, minimum | 3.25 | ||||
| Number of projects acquired under lease agreement | project | 1 | ||||
| Sale leaseback terms | 20 years | ||||
| Line of Credit | |||||
| Debt Instrument [Line Items] | |||||
| Line of credit, amount outstanding | $ 185,000,000 | ||||
| Line of Credit | Revolving Credit Facility | |||||
| Debt Instrument [Line Items] | |||||
| Revolving credit, maximum borrowing capacity | $ 115,000,000 | $ 85,000,000 | |||
| Funds available for borrowing | $ 46,480,000 | ||||
| Term Loan | |||||
| Debt Instrument [Line Items] | |||||
| Long-term debt, gross | $ 65,000,000 | $ 40,000,000 | |||
| Long Term Financing Facility | |||||
| Debt Instrument [Line Items] | |||||
| Long term financing facility, interest rate (percentage) | 0.28% | ||||
| Long-term debt | $ 4,872,000 | 
| X | ||||||||||
- Definition Business Combination, Number Of Projects Acquired Under Lease Agreement No definition available. 
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- Definition Debt Instrument, Covenant, Total Funded Debt To EBITDA Ratio, Maximum No definition available. 
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- Definition Debt Instrument, Covenant, Total Funded Debt To EBITDA Ratio, Minimum No definition available. 
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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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. No definition available. 
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- Definition Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Fair value of the amount outstanding under the credit facility. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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