Real Estate and Lending Activities - Summary of Status Update on Current Development Projects (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Business Acquisition [Line Items]
Original Commitment	$ 85,101
Costs Incurred as of June 30, 2014	52,376
Property Oakleaf Surgical Hospital [Member] | Location Altoona, WI [Member] | Property Type Acute Care Hospital [Member] | Operator National Surgical Hospitals [Member]
Business Acquisition [Line Items]
Original Commitment	33,500
Costs Incurred as of June 30, 2014	28,669
Estimated Completion Date	3Q 2014
Property First Choice ER - Allen [Member] | Location Allen, TX [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	6,187
Costs Incurred as of June 30, 2014	3,365
Estimated Completion Date	3Q 2014
Property First Choice ER - Broomfield [Member] | Location Broomfield, CO [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	5,238
Costs Incurred as of June 30, 2014	2,515
Estimated Completion Date	3Q 2014
Property First Choice ER - Spring [Member] | Location Spring, TX [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	5,804
Costs Incurred as of June 30, 2014	2,676
Estimated Completion Date	3Q 2014
Property First Choice ER - Fountain [Member] | Location Fountain, CO [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	6,194
Costs Incurred as of June 30, 2014	3,380
Estimated Completion Date	3Q 2014
Property First Choice ER - Missouri City (Sienna) [Member] | Location Houston, TX [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	5,394
Costs Incurred as of June 30, 2014	3,565
Estimated Completion Date	3Q 2014
Property First Choice ER - Pearland [Member] | Location Pearland, TX [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	5,691
Costs Incurred as of June 30, 2014	2,331
Estimated Completion Date	4Q 2014
Property First Choice ER - Thornton [Member] | Location Thornton, CO [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	6,029
Costs Incurred as of June 30, 2014	2,652
Estimated Completion Date	4Q 2014
Property First Choice ER - Missouri City (Dulles) [Member] | Location Houston, TX [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	5,693
Costs Incurred as of June 30, 2014	2,516
Estimated Completion Date	4Q 2014
Property First Choice ER - Commerce City [Member] | Location Denver, CO [Member] | Property Type Acute Care Hospital [Member] | Operator Adeptus Health [Member]
Business Acquisition [Line Items]
Original Commitment	5,371
Costs Incurred as of June 30, 2014	$ 707
Estimated Completion Date	4Q 2014