CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $)	12 Months Ended
Dec. 31, 2010	Dec. 31, 2009
Purchases of subsidiaries, cash acquired	$ 2,145,792	$ 419,215

The cash inflow associated with the acquisition of a business when the cash held by the acquired business exceeds the cash payments to acquire the business.

No definition available.

Name:	us-gaap_CashAcquiredInExcessOfPaymentsToAcquireBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration