Consolidated Balance Sheets(USD ($))	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Series B Preferred Stock [Member]	Dec. 31, 2011 Series B Preferred Stock [Member]	Dec. 31, 2012 Undesignated Preferred Stock [Member]	Dec. 31, 2011 Undesignated Preferred Stock [Member]
Current Assets
Cash and cash equivalents	$ 21,983,641	$ 23,090,102
Accounts receivable, net	10,104,736	1,990,127
Inventory (Note 3)	135,229	304,372
Prepaid expenses and other receivables (Note 4)	3,014,017	1,090,142
Total Current Assets	35,237,623	26,474,743
Property, plant and equipment, net (Note 5)	8,734,845	9,415,894
Intangible assets, net (Note 6)	243,790	301,653
Deposit on contract rights (Note 7)	993,496	1,266,504
Prepaid capital lease (Note 9)	103,010	108,111
Total Assets	45,312,764	37,566,905
Current Liabilities
Accounts payable	1,886,413	1,172,603
Other payables and advances from customers	1,194,936	889,470
Lease payable - current portion (Note 9)	3,164	2,838
Short-term loan (Note 8)	63,452	62,948
Income taxes payable	460,545	452,627
Total Current Liabilities	3,608,510	2,580,486
Long-term Liabilities
Lease payable - noncurrent portion (Note 9)	116,619	118,831
Total Long-term Liabilities	116,619	118,831
Total Liabilities	3,725,129	2,699,317
Stockholders' Equity
Preferred stock, value			4,102	4,150	0	0
Common stock: par value $0.001 per share, 100,000,000 shares authorized; 19,522,557 shares issued and outstanding at December 31, 2012 and 19,412,013 shares issued and outstanding at December 31, 2011 (Note 10)	19,523	19,412
Additional paid in capital	25,874,629	25,819,701
Statutory surplus reserve fund (Note 12)	2,415,732	1,914,074
Retained earnings	10,328,155	4,422,741
Accumulated other comprehensive income	2,945,494	2,687,510
Total Stockholders' Equity	41,587,635	34,867,588
Total Liabilities and Stockholders' Equity	$ 45,312,764	$ 37,566,905