Intangible Assets (Details Textual)	12 Months Ended
Dec. 31, 2011 Y
Goodwill and Intangible Assets (Textual) [Abstract]
Approximately weighted average remaining life of intangible assets	1.6

The calculated weighted-average useful life of all finite-lived intangible assets.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsWeightedAverageUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration