Mortgage Notes Receivable - Narrative (Details) (USD $)	12 Months Ended								9 Months Ended	12 Months Ended		1 Months Ended	3 Months Ended	12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2013 ConstructionLoan		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Construction Loans [Member]	Dec. 31, 2012 Construction Loans [Member]	Sep. 30, 2013 Construction Loans [Member] Medical Office Building [Member] OKLAHOMA	Dec. 31, 2013 Construction Loans [Member] Medical Office Building [Member] OKLAHOMA	Dec. 31, 2012 Construction Loans [Member] Medical Office Building [Member] OKLAHOMA	Sep. 30, 2013 Construction Loans [Member] Inpatient [Member] MISSOURI	Sep. 30, 2013 Construction Loans [Member] Inpatient [Member] MISSOURI	Dec. 31, 2013 Construction Loans [Member] Inpatient [Member] MISSOURI	Dec. 31, 2012 Construction Loans [Member] Inpatient [Member] MISSOURI	Dec. 31, 2013 Other Mortgage Loans [Member]	Dec. 31, 2012 Other Mortgage Loans [Member]	Jan. 31, 2014 Other Mortgage Loans [Member] Other Property [Member] IOWA	Dec. 31, 2013 Other Mortgage Loans [Member] Other Property [Member] IOWA	Dec. 31, 2012 Other Mortgage Loans [Member] Other Property [Member] IOWA
Mortgage Loans on Real Estate [Line Items]
Existing Construction Mortgage Loans Funded	$ 58,700,000		$ 78,300,000							$ 23,100,000				$ 35,600,000
Number of Mortgage Notes Receivable Outstanding	2
Mortgage notes receivable	125,547,000	[1]	162,191,000	[1]	97,381,000	36,599,000	79,969,000	118,441,000		79,969,000	56,842,000			0	61,599,000	45,578,000	43,750,000		39,973,000	40,000,000
Interest Rate									6.75%	7.72%				8.17%					7.70%
Anticipated Amount of Investment										14,900,000
Estimated costs to completion										11,200,000
Purchase price subject to final project costs										91,200,000
Purchase price												102,600,000
Construction mortgage note receivable prepayment	97,200,000											97,200,000
Cash Consideration												5,400,000
Percentage of Property Leased													100.00%						93.00%
Face Amount										94,889,000				111,400,000					40,000,000
Mortgage Loan on Real Estate Exit Fee																		$ 1,500,000

[1] Level 2 - Fair value based on quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-driven valuations in which significant inputs and significant value drivers are observable in active markets.