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Subsequent Events - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended		1 Months Ended			0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended				0 Months Ended
	Jan. 31, 2013	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jul. 31, 2013 Subsequent Event [Member]	Jul. 31, 2013 Subsequent Event [Member] Common Stock [Member]	Jul. 31, 2013 Subsequent Event [Member] Fixed Rate Loan [Member]	Aug. 05, 2013 Subsequent Event [Member] Floating Rate Loan [Member]	Jul. 31, 2013 Subsequent Event [Member] New York [Member] hotel	Aug. 05, 2013 Subsequent Event [Member] Mezzanine Loan [Member] story key parking_space	Jul. 31, 2013 Subsequent Event [Member] Mezzanine Loan [Member] sqft	Jul. 31, 2013 Subsequent Event [Member] Mezzanine Loan [Member] Fixed Rate Loan [Member]	Aug. 05, 2013 Subsequent Event [Member] First Mortgage [Member] Mortgage Loan Issued by Third Party [Member]	Jul. 31, 2013 Subsequent Event [Member] First Mortgage [Member] Mortgage Loan Issued by Third Party [Member]	Jul. 31, 2013 Subsequent Event [Member] Dividend Declared [Member]
Subsequent Event [Line Items]
Declaration Date																Jul. 31, 2013
Dividend declared per share of common stock		$ 0.40	$ 0.40	$ 0.80	$ 0.80											$ 0.40
Payment Date																Oct. 11, 2013
Record Date																Sep. 30, 2013
Secured loan receivable, face amount								$ 105,000,000	$ 105,000,000		$ 22,500,000	$ 25,000,000	$ 14,000,000	$ 82,500,000	$ 91,000,000
Number of hotels										3
Loan receivable, extended term										1 year
Secured loan receivable												13,551,000
Loan carrying value as a percentage of face value (percent)												97.00%
Area of building (in square feet)												432,717
Loan maturity term						10 years			5 years
Loan-to-value percentage											73.00%	70.00%
IRR on loan investment	17.00%										12.00%	13.00%
Number of stories in multi-tenant office building											27
Number of hotel rooms											616
Number of spaces in parking garage											479
Stock repurchase program, authorized amount							$ 50,000,000

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Loan to value percentage.

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Number of Hotel Rooms

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Parking Garage, Number of Spaces

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Percentage Of Internal Rate Of Return

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Area of a real estate property.

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Aggregate dividends declared during the period for each share of common stock outstanding.

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-Name Regulation S-X (SX)

-Number 210

-Section 04

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Amount before allowance of commercial loans issued to businesses to acquire, develop, construct, improve, or refinance land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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-Number 01-6

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