Quarterly report pursuant to Section 13 or 15(d)

Lease Commitments - Payments for Gound Leases (Details)

v3.19.1
Lease Commitments - Payments for Gound Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Lessor, Lease, Description [Line Items]      
Total ground leases $ 247 $ 199  
Amscot      
Lessor, Lease, Description [Line Items]      
Total ground leases 6 5  
Expiration Year     2045
Beaver Ruin Village      
Lessor, Lease, Description [Line Items]      
Total ground leases 14 11  
Expiration Year     2054
Beaver Ruin Village II      
Lessor, Lease, Description [Line Items]      
Total ground leases 6 5  
Expiration Year     2056
Leased office space Charleston, SC      
Lessor, Lease, Description [Line Items]      
Total ground leases 25 25  
Expiration Year     2019
Moncks Corner      
Lessor, Lease, Description [Line Items]      
Total ground leases 30 30  
Expiration Year     2040
Devine Street      
Lessor, Lease, Description [Line Items]      
Total ground leases 99 63  
Expiration Year     2051
JANAF      
Lessor, Lease, Description [Line Items]      
Total ground leases 67 60  
Expiration Year     2069
Ground leases variable percentage rent $ 30 $ 24