Current and Deferred Income Taxes (Detail) (USD $)	3 Months Ended					9 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Current							$ 312,630
Deferred							(3,197,261)	15,774
Total	$ (3,135,000)	$ (16,000)	$ 208,000	$ 59,000	$ 16,000	$ 15,744	$ (2,884,631)	$ 15,774