Other Receivables (Components Of Other Receivables) (Detail) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Components For Other Receivables and Current Assets [Line Items]
Other receivables	$ 8,867,697	$ 3,005,423
Individual and Employees [Member]
Components For Other Receivables and Current Assets [Line Items]
Other receivables	7,184,423	1,214,957
Companies [Member]
Components For Other Receivables and Current Assets [Line Items]
Other receivables	527,560	678,423
Security Deposits [Member]
Components For Other Receivables and Current Assets [Line Items]
Other receivables	$ 1,155,714	$ 1,112,043