Dispositions (CCP Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Aug. 17, 2015	Dec. 31, 2014
Assets
Total assets	$ 54,961	$ 93,060
Liabilities
Total liabilities	$ 1,462	$ 34,340
CCP | Spinoff
Assets
Net real estate investments			$ 2,588,255	$ 2,274,310
Cash and cash equivalents			1,749	2,710
Goodwill			135,446	88,959
Assets held for sale			7,610	8,435
Other assets			15,089	16,596
Total assets			2,748,149	2,391,010
Liabilities
Accounts payable and other liabilities			217,760	204,359
Liabilities related to assets held for sale			985	1,288
Total liabilities			218,745	205,647
Net assets			$ 2,529,404	$ 2,185,363