Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Details)

v3.19.2
Leases - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2019
Jun. 30, 2019
Dec. 31, 2018
Operating Lease Average Remaining Lease Term   10 years  
Operating Lease, Lease Income $ 16,835 $ 31,976  
Operating Lease, Variable Lease Income $ 1,079 $ 2,395  
Operating Lease, Weighted Average Remaining Lease Term 24 years 24 years  
Operating Lease, Right-of-Use Asset $ 3,111 $ 3,111  
Operating Lease, Weighted Average Discount Rate, Percent 4.42% 4.42%  
Operating Lease, Expense $ 35 $ 86  
Other Liabilities $ 2,371 2,371  
Increase In Operating Lease Right Of Use Assets   100  
Increase In Operating Lease Liabilities   $ 100  
Moline Facility [Member]      
Lessee Operating Lease Remaining Term Of Contract     10 years
Lessor, Operating Lease, Renewal Term     12 years
Silvis facility [Member]      
Lessee Operating Lease Remaining Term Of Contract     67 years