CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY [Parenthetical] (USD $)	6 Months Ended
Jun. 30, 2012
Sale and issuance of common stock, per share (in dollars per share)	$ 4.44

Amount per share assigned to the consideration received for shares issued.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 915

-SubTopic 215

-Section 45

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6472370&loc=d3e38297-110927

Name:	us-gaap_EquityIssuancePerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration