Leases (Components of Lease Income) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating Lease Income [Line Items]
Direct financing and sales-type leases		$ 5,114	$ 5,795	$ 10,361	$ 11,916
Operating leases(a)	[1]	2,158	1,930	4,342	4,004
Total lease income		7,272	7,725	14,703	15,920
Operating Lease Income from Related Party [Member]
Operating Lease Income [Line Items]
Operating leases(a)		$ 19	$ 19	$ 38	$ 38

[1] (a) Includes rent from Tower Properties Company, a related party, of $19 thousand for the three month periods ended June 30, 2022 and 2021, and $38 thousand for the six months ended June 30, 2022 and 2021