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Subsequent Events - Additional Information (Detail) (USD $)
In Millions, except Share data, unless otherwise specified
 0 Months Ended 0 Months Ended 1 Months Ended 1 Months Ended
Jun. 15, 2012
Mar. 26, 2013
Jun. 15, 2012
Series A Cumulative Redeemable Preferred Stock [Member]
Jul. 22, 2013
Subsequent Event [Member]
Jul. 11, 2013
Subsequent Event [Member]
Jul. 23, 2013
Subsequent Event [Member]
Jul. 23, 2013
CIBC [Member]
Jul. 23, 2013
CIBC [Member]
Series A Cumulative Redeemable Preferred Stock [Member]
Subsequent Event [Line Items]                
Dividend paid         $ 0.035      
Dividend distributed       $ 0.04        
Amount of mortgage loan $ 1.50           $ 15.60  
Interest rate on amount borrowed             4.78%  
Amortization schedule for level payments of principal and interest on a monthly basis             30 years  
Debt instrument maturity date             Aug. 01, 2018  
Proceeds of the mortgage used to redeem Preferred Stock               2,460
Agreement with the holders of the Company's Series A cumulative redeemable preferred stock to redeem 12.3   12.3         2.7
Loan proceeds placed into restricted reserve           0.7    
Prepayment fee pursuant to the provisions of the Articles Supplementary $ 0.8 $ 0.2       $ 0.2