Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies -Delineates Current and Deferred Portions of Income Tax Provision (Detail)

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Summary of Significant Accounting Policies -Delineates Current and Deferred Portions of Income Tax Provision (Detail) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Summary Of Components Of Income Tax Expense Benefit Continuing Operations [Line Items]          
Current portion         $ (268,356)
Deferred portion       (47,022) 568,675
Total income taxes 46,838 139,016 106,027 267,916 300,319
As Previously Reported [Member]
         
Summary Of Components Of Income Tax Expense Benefit Continuing Operations [Line Items]          
Current portion         216,591
Deferred portion         83,728
Total income taxes         300,319
Adjustment [Member]
         
Summary Of Components Of Income Tax Expense Benefit Continuing Operations [Line Items]          
Current portion         (484,947)
Deferred portion         $ 484,947