Leased Properties and Leases - Future Minimum Lease Receipts (Details) |
Jun. 30, 2018
USD ($)
|
|---|---|
| Sale Leaseback Transaction [Line Items] | |
| 2018 | $ 30,919,514 |
| 2019 | 64,103,462 |
| 2020 | 71,264,921 |
| 2021 | 77,445,396 |
| 2022 | 76,553,434 |
| Thereafter | 302,242,184 |
| Total | $ 622,528,911 |
| Portland Terminal Facility [Member] | |
| Sale Leaseback Transaction [Line Items] | |
| Lease term | 15 years |
| X | ||||||||||
- Definition Term of lessor's operating 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
|
| X | ||||||||||
- Definition Future minimum rental payments in aggregate as of the balance sheet date under operating leases. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Future rental payments receivable within the fifth year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Future rental payments receivable within the fourth year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Future rental payments receivable within the third year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Future rental payments receivable within the second year from the balance sheet date under an operating lease. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of required minimum rental payments receivable in the remainder of the fiscal year following the latest fiscal year ended for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. No definition available.
|
| X | ||||||||||
- Definition Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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. No definition available.
|
| X | ||||||||||
- Details
|