Leases Direct finance lease income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Direct finance lease income [Abstract]
Direct Financing Lease, Interest Income	$ 3,432	$ 6,865
Direct Financing Lease, Variable Lease Income	602	1,051
Direct Financing Lease, Lease Income	$ 4,034	$ 7,916