XML 51 R59.htm IDEA: XBRL DOCUMENT v2.4.0.6
Related Party Transactions - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Management [Member]
Dec. 30, 2011
Management [Member]
Dec. 31, 2010
Management [Member]
Dec. 31, 2011
Management [Member]
Related Party Transaction [Line Items]                              
Rate of management fees                       1.50%      
Period of termination                       180 days      
Period to be considered, for average annual base management fee                       24 months      
Current term of the Management Agreement expiration date                       September 29, 2013      
Base management fees $ 2,040 $ 1,518 $ 1,292 $ 1,289 $ 1,297 $ 1,241 $ 1,101 $ 1,088 $ 6,139 $ 4,728 $ 3,339 $ 6,139 $ 4,728 $ 3,339  
Total expenses related to reimbursements                       987 802 1,920  
Base management fees incurred but not yet paid $ 2,037       $ 1,298       $ 2,037 $ 1,298   $ 2,037     $ 1,298