Commitments And Contingencies Commitments and Contingencies (Schedule of Lease Commitments) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Maximum Commitment For All Active Development Projects	$ 129,800
Construction and Development Costs	(76,688)
Remaining Unfunded Development Commitment	53,112
Capital Addition Purchase Commitments [Member] | Ensign Group [Member]
Maximum Commitment For All Active Development Projects	56,000
Construction and Development Costs	(14,000)
Remaining Unfunded Development Commitment	42,000
Development Commitment [Member] | Bickford Senior Living [Member]
Maximum Commitment For All Active Development Projects	56,500
Construction and Development Costs	(53,857)
Remaining Unfunded Development Commitment	2,643
Development Commitment [Member] | Chancellor Healthcare [Member]
Maximum Commitment For All Active Development Projects	650
Construction and Development Costs	(62)
Remaining Unfunded Development Commitment	588
Capital Improvement Commitment [Member] | Bickford Senior Living [Member]
Maximum Commitment For All Active Development Projects	2,400
Construction and Development Costs	0
Remaining Unfunded Development Commitment	2,400
Capital Improvement Commitment [Member] | East Lake Capital [Member]
Maximum Commitment For All Active Development Projects	400
Construction and Development Costs	0
Remaining Unfunded Development Commitment	400
Capital Improvement Commitment [Member] | East Lake / Watermark Retirement [Member]
Maximum Commitment For All Active Development Projects	10,000
Construction and Development Costs	(5,900)
Remaining Unfunded Development Commitment	4,100
Capital Improvement Commitment [Member] | Sante Partners Commitment [Member]
Maximum Commitment For All Active Development Projects	3,500
Construction and Development Costs	(2,621)
Remaining Unfunded Development Commitment	879
Capital Improvement Commitment [Member] | Village Concepts [Member]
Maximum Commitment For All Active Development Projects	350
Construction and Development Costs	(248)
Remaining Unfunded Development Commitment	$ 102