Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $)	6 Months Ended
Jun. 30, 2012
Cash Equivalents [Abstract]
Maturity period for liquid investments to be considered as cash equivalents, maximum	3 months
Income Taxes [Abstract]
Uncertain tax positions	$ 0
Revenue and Cost Recognition [Abstract]
Period of completion of contract, minimum	1 year
Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years

The current portion of the amount recognized for uncertain tax positions as of the balance sheet date.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

-Number 48

-Paragraph 6, 7, 8

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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_LiabilityForUncertainTaxPositionsCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant