Real Estate and Lending Activities - Summary of Status Update on Current Development Projects (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Business Acquisition [Line Items]
Commitment	$ 152,204
Costs Incurred as of 03/31/2015	49,266
UAB Medical West [Member] | Hoover AL [Member] | Acute Care Hospital And MOB [Member] | Medical West, an Affiliate of UAB [Member]
Business Acquisition [Line Items]
Commitment	8,653
Costs Incurred as of 03/31/2015	5,853
Estimated Completion Date	2Q 2015
First Choice ER- Carrollton [Member] | Carrollton TX [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	35,820
Costs Incurred as of 03/31/2015	23,458
Estimated Completion Date	3Q 2015
First Choice ER- Chandler [Member] | Chandler AZ [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	5,049
Costs Incurred as of 03/31/2015	2,502
Estimated Completion Date	2Q 2015
First Choice ER- Converse [Member] | Converse TX [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	5,754
Costs Incurred as of 03/31/2015	4,311
Estimated Completion Date	2Q 2015
First Choice ER- Denver 48th [Member] | Denver, CO [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	5,123
Costs Incurred as of 03/31/2015	1,174
Estimated Completion Date	2Q 2015
First Choice ER- McKinney [Member] | McKinney TX [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	4,750
Costs Incurred as of 03/31/2015	1,002
Estimated Completion Date	3Q 2015
First Choice Emergency Rooms [Member] | Various [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	13,448
Costs Incurred as of 03/31/2015	0
Estimated Completion Date	Various
First Choice ER Aurora [Member] | Aurora CO [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	5,273
Costs Incurred as of 03/31/2015	21
Estimated Completion Date	3Q 2015
First Choice ER Conroe [Member] | Houston, TX [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	6,110
Costs Incurred as of 03/31/2015	1,668
Estimated Completion Date	3Q 2015
First Choice ER Conroe [Member] | Gilbert AZ [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	6,500
Costs Incurred as of 03/31/2015	2,481
Estimated Completion Date	3Q 2015
First Choice ER Glendale [Member] | Glendale AZ [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	4,824
Costs Incurred as of 03/31/2015	564
Estimated Completion Date	3Q 2015
First Choice ER Victory Lakes [Member] | Houston, TX [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	4,939
Costs Incurred as of 03/31/2015	554
Estimated Completion Date	3Q 2015
First Choice ER Vintage Preserve [Member] | Houston, TX [Member] | Acute Care Hospital [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Commitment	45,961
Costs Incurred as of 03/31/2015	$ 5,678
Estimated Completion Date	3Q 2016