Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Monthly Distributions Declared by Company's Board of Directors (Detail)

v2.4.0.8
Subsequent Events - Monthly Distributions Declared by Company's Board of Directors (Detail) (USD $)
1 Months Ended
Jul. 31, 2013
Subsequent Event [Line Items]  
Distribution per Share $ 0.36
Subsequent Event A [Member]
 
Subsequent Event [Line Items]  
Record Date Jul. 19, 2013
Payment Date Jul. 31, 2013
Distribution per Share $ 0.12
Subsequent Event B [Member]
 
Subsequent Event [Line Items]  
Record Date Aug. 21, 2013
Payment Date Aug. 30, 2013
Distribution per Share $ 0.12
Subsequent Event C [Member]
 
Subsequent Event [Line Items]  
Record Date Sep. 18, 2013
Payment Date Sep. 30, 2013
Distribution per Share $ 0.12