Annual report pursuant to Section 13 and 15(d)

Leased Properties and Leases - Future Minimum Lease Receipts (Details)

v3.8.0.1
Leased Properties and Leases - Future Minimum Lease Receipts (Details)
12 Months Ended
Dec. 31, 2017
USD ($)
Sale Leaseback Transaction [Line Items]  
2018 $ 61,828,029
2019 64,103,462
2020 71,264,921
2021 77,445,396
2022 76,553,434
Thereafter 302,242,184
Total $ 653,437,426
Portland Terminal Facility [Member]  
Sale Leaseback Transaction [Line Items]  
Initial term 15 years