Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Detail)

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Related-Party Transactions - Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees (Detail) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Mar. 31, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Management Fee:          
Allocated payroll and benefits     $ 32,594 $ 38,668 $ 64,818
Allocated overhead expenses     11,545 7,538 23,357
Prior management advisory fee     44,139 46,206 88,175
Amended base management fee 25,136     38,095  
Total management fee 25,136   44,139 84,301 88,175
Incentive Fee:          
Incentive Fee   41,037 0 41,037 0
Credit from voluntary, irrevocable waiver by Adviser's board of directors (41,037)     (41,037)  
Net incentive fee (41,037)        
Administration Fee:          
Allocated payroll and benefits     27,279 14,034 44,213
Allocated overhead expenses     8,962 4,498 14,833
Prior administration fee     36,241 18,532 59,046
Amended administration fee 57,508     77,308  
Total administration fee $ 57,508   $ 36,241 $ 95,840 $ 59,046