Subsequent Events (Narrative) (Details) (USD $)	3 Months Ended
Mar. 31, 2012
Subsequent Events [Abstract]
Business acquisition, date of agreement	April 10, 2012
Business acquisition, conversion value of common stock, per share	$ 10.00
Business acquisition, purchase price of acquired entity	44,700,000
Business combination, termination date	April 30, 2012
Business combination, termination cost to other purchaser	58,000,000
Business combination, termination premium	30.00%
Business combination, termination fee	$ 1,600,000

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePrice
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant