Lease Accounting - Components of Lease Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Fixed	$ 1,297
Variable	18
Total	1,315
Property Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Fixed	997
Variable	0
Total	997
General and Administrative Expense [Member]
Lessee, Lease, Description [Line Items]
Fixed	300
Variable	18
Total	$ 318