Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Sep. 30, 2012
Series A Participating Preferred Units [Member]
Sep. 30, 2012
Class A Common Units [Member]
Dec. 31, 2012
Federal or State Income Taxes [Member]
Sep. 30, 2012
Federal or State Income Taxes [Member]
Sep. 30, 2011
Federal or State Income Taxes [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Financing receivable, past due                       90 days  
Cash and cash equivalents original maturity period   3 months                      
Restricted cash and cash equivalents   $ 49,865,000   $ 2,035,000                  
Finite-lived intangible asset, useful life                       3 years 15 years
Impairment loss on goodwill   0 0   0                
Impairment loss on investment 0     0   0              
Equity method investments        787,000                  
Real estate investment description   To qualify as a REIT, we must meet a number of organizational and operational requirements, including a requirement that we currently distribute at least 90% of our net taxable income, excluding capital gains, to our shareholders.                      
Percentage of taxable income distributed to stockholders                       90.00%  
Provision for income taxes                 0 0 0    
Uncertain tax positions   0   0                  
Income tax examination, description   We have had no examinations in progress, none are expected at this time, and years 2009 through 2012 are open.                      
Accrued interest and penalties   0   0                  
Interest and penalties recognized during the year 0 0   0   0              
Preferred Units, authorized             15,601,077            
Preferred Units, issued             15,601,077            
Preferred Units, outstanding             15,601,077            
Common Unit, authorized               1,733,453          
Common Unit, outstanding               1,200,000          
Preferred Units compounded annual yield               10.00%          
Return of capital to Preferred Units holders               10,400,000          
Payment of accrued distributions $ 10,401,000             $ 2,300,000