Quarterly report pursuant to Section 13 or 15(d)

Land Leases (Details)

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Land Leases (Details)
3 Months Ended
Mar. 31, 2018
Moline Facility [Member]  
Lessee Leasing Arrangements, Operating Leases, Renewal Term 10 years
Silvis facility [Member]  
Lessee Leasing Arrangements, Operating Leases, Renewal Term 67 years